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Cisco Nexus 6000 Series Release Notes, 
Release 7.x
Release Date: January 29, 2014
Date Last Modified: January 9, 2015
Current Release: NX-OS Release 7.1(0)N1(1a)
This document describes the features, caveats, and limitations for the Cisco Nexus 6000 Series devices
and the Cisco Nexus 2000 Series Fabric Extenders. Use this document in combination with documents
listed in the “Obtaining Documentation and Submitting a Service Request” section on page 32.
Note
Release notes are sometimes updated with new information about restrictions and caveats. See the
following website for the most recent version of the Cisco Nexus 6000 and Cisco Nexus 2000 Series
release notes:
http://www.cisco.com/en/US/docs/switches/datacenter/nexus6000/sw/release/notes/Nexus_6000_Relea
se_Notes.html
Note
Table 1 shows the online change history for this document.
Table 1
Online History Change
Date
Description
January 9, 2015
Added CSCus31100, CSCus39388, CSCus18209 to Resolved Caveats.
Added note about CSCus39830 to the ISSU matrix table.
January 8, 2015
Created NX-OS Release 7.1(0)N1(1a) release notes.
January 7, 2015
Added CSCus39388 and CSCus39830 to Open Caveats.
January 6, 2015
Added CSCus22741 to Open Caveats.
Added Open Management Infrastructure to New and Changed Features.
December 23, 2014
Added CSCus31100 to Open Caveats.
December 22, 2014
Created NX-OS Release 7.1(0)N1(1) release notes.
December 22, 2014
Created NX-OS Release 7.0(5)N1(1a) release notes.
Americas Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Contents
Table 1
Online History Change (continued)
Date
Description
October 24, 2014
Created NX-OS Release 7.0(5)N1(1) release notes.
October 2, 2014
Added CSCur09549 to Open Caveats.
September 29, 2014
Created NX-OS Release 7.0(4)N1(1) release notes.
July 25, 2014
Created NX-OS Release 7.0(3)N1(1) release notes.
May 9, 2014
Added Buffer Utilization Histogram to New Software Features.
May 5, 2014
Created NX-OS Release 7.0(2)N1(1) release notes.
April 1, 2014
Added CSCuo02594 to Open Caveats.
March 27, 2014
Added optics to Table 2. Updated Introduction.
March 20, 2014
Created NX-OS Release 7.0(1)N1(1) release notes.
February 21, 2014
Added CVR-QSFP-SFP10G to Table 2.
February 3, 2014
Removed Fibre Channel and Fibre Channel Over Ethernet Slow Drain from
New Features list.
January 29, 2014
Created NX-OS Release 7.0(0)N1(1) release notes.
Contents
This document includes the following sections:
•
Introduction, page 2
•
System Requirements, page 3
•
New and Changed Features, page 11
•
Online Insertion and Removal Support, page 10
•
Upgrading or Downgrading to a New Release, page 21
•
Limitations, page 22
•
Caveats, page 25
•
MIB Support, page 31
•
Obtaining Documentation and Submitting a Service Request, page 32
Introduction
The Cisco NX-OS software is a data center-class operating system built with modularity, resiliency, and
serviceability at its foundation. Based on the industry-proven Cisco NX-OS software, Cisco NX-OS
helps ensure continuous availability and sets the standard for mission-critical data center environments.
The highly modular design of Cisco NX-OS makes zero-effect operations a reality and enables
exceptional operational flexibility.
Several new hardware and software features are introduced for the Cisco Nexus 6000 Series device and
the Cisco Nexus 2000 Series Fabric Extender (FEX) to improve the performance, scalability, and
management of the product line.
Cisco Nexus 6000 Series Release Notes, Release 7.x
2
System Requirements
Cisco Nexus 6000 Series Devices
The Cisco Nexus 6000 Series includes 10- and 40-Gigabit Ethernet density in energy-efficient compact
form factor switches. The Cisco Nexus 6000 Series Layer 2 and Layer 3 set allow for multiple scenarios
such as direct-attach 10- and 40-Gigabit Ethernet access and high-density Cisco Fabric Extender (FEX)
aggregation deployments, leaf and spine architectures, or compact aggregation to build scalable Cisco
Unified Fabric in the data centers.
Cisco Nexus 6000 Series products use the same set of Cisco application-specific integrated circuits
(ASICs) and a single software image across the products within the family, which offers feature
consistency and operational simplicity. Cisco Nexus 6000 Series switches support robust Layer 2 and
Layer 3 functions, industry-leading FEX architecture with Cisco Nexus 2000 and Cisco Nexus B22
Blade FEX, in-service software upgrades (ISSUs), and Cisco FabricPath. Operational efficiency and
programmability are enhanced on the Cisco Nexus 6000 Series through advanced analytics, PowerOn
Auto Provisioning (POAP), and Python/Tool Command Language (Tcl) scripting.
The Cisco Nexus devices include a family of line-rate, low-latency, lossless 10-Gigabit Ethernet, Cisco
Data Center Ethernet, Fibre Channel over Ethernet (FCoE), and native Fibre Channel devices for data
center applications.
For information about the Cisco Nexus 6000 Series, see the Cisco Nexus 6000 Series Platform Hardware
Installation Guide.
Cisco Nexus 2000 Series Fabric Extenders
The Cisco Nexus 2000 Series Fabric Extender (FEX) is a highly scalable and flexible server networking
solution that works with the Cisco Nexus 6000 Series devices to provide high-density and low-cost
connectivity for server aggregation. Scaling across 1-Gigabit Ethernet, 10-Gigabit Ethernet, and
40-Gigabit Ethernet, unified fabric, rack, and blade server environments, the FEX is designed to simplify
data center architecture and operations.
The FEX integrates with its parent Cisco Nexus device, which allows zero-touch provisioning and
automatic configuration. The FEX provides a single point of management that supports a large numbers
of servers and hosts that can be configured with the same feature set as the parent Cisco Nexus 6000
Series switch, including security and quality of service (QoS) configuration parameters. Spanning Tree
Protocol (STP) is not required between the Fabric Extender and its parent switch, because the Fabric
Extender and its parent switch allow you to enable a large multi-path, loop-free, active-active topology.
Software is not included with the Fabric Extender. Cisco NX-OS software is automatically downloaded
and upgraded from its parent switch. For information about configuring the Cisco Nexus 2000 FEX, see
the “Configuring the Fabric Extender” chapter in the Cisco Nexus 6000 Series Layer 2 Switching
Configuration Guide.
System Requirements
This section includes the following topics:
•
Hardware Supported, page 4
•
Online Insertion and Removal Support, page 10
Cisco Nexus 6000 Series Release Notes, Release 7.x
3
System Requirements
Hardware Supported
The Cisco NX-OS software supports the Cisco Nexus 6000 Series switch. You can find detailed
information about supported hardware in the Cisco Nexus 6000 Series Hardware Installation Guide.
Table 2 shows the hardware supported by Cisco NX-OS Release 7.x software.
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software
Cisco NX-OS Release Support
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
Cisco Nexus 6004-EF
switch (No LEMs)
N6K-C6004EF
—
—
X
X
Cisco Nexus 6004-EF
switch
N6004-B-24Q
X
X
X
X
Cisco Nexus 6001P
switch
N6K-C6001-64P
X
X
X
X
Cisco Nexus 6001T
switch
N6K-C6001-64T
X
X
X
X
Cisco Nexus 6004
switch
N6K-C6004-96Q
X
X
X
X
Cisco Nexus 2348UPQ
FEX
N2K-C2348UPQ
—
—
X
X
Cisco Nexus 2348TQ
FEX
N2K-C2348TQ-10GE
—
—
—
X
Cisco Nexus 2248PQ
FEX1
N2K-C2248PQ-10GE
X
X
X
X
Cisco Nexus B22 DELL N2K-B22DELL-P
FEX
X
X
X
X
Cisco Nexus 2232TM-E N2K-C2232TM-E-10G
FEX
E
X
X
X
X
Cisco Nexus B22F FEX N2K-B22FTS-P
X
X
X
X
Cisco Nexus B22HP
FEX
N2K-B22HP-P
X
X
X
X
Cisco Nexus B22IBM
FEX
N2K-B22IBM-P
—
X
X
X
Cisco Nexus 2232TM
FEX
N2K-C2232TM-10GE
X
X
X
X
Cisco Nexus 2232PP
FEX
N2K-C2232PP-10GE
X
X
X
X
Hardware
7.1(0)N1(1a)
7.1(0)N1(1)
Cisco Nexus 6000 Series
Cisco Nexus 2000 Series
Cisco Nexus 6000 Series Release Notes, Release 7.x
4
System Requirements
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
Hardware
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
Cisco Nexus 2248TP-E
FEX
N2K-C2248TP-E-1GE
X
X
X
X
Cisco Nexus 2248TP
FEX
N2K-C2248TP-1GE
X
X
X
X
Cisco Nexus 2224TP
FEX
N2K-C2224TP-1GE
X
X
X
X
Cisco Nexus 2148T
FEX
N2K-C2148T-1GE
—
—
—
—
100 Gigabit Ethernet
Line Card Expansion
Module (LEM)2
N5696-M4C
—
—
—
X
12Q 40-Gigabit
Ethernet FCoE ports
N6K-C6004-M12Q
X
X
X
X
Cisco Nexus 6004
Unified Port Linecard
Expansion Module
N6004X-M20UP
—
X
X
X
FET-40G
X
X
X
X
X
X
X
X
7.1(0)N1(1a)
7.1(0)N1(1)
Linecard Expansion
Modules
Transceivers
QSFP Transceivers
40-Gigabit Ethernet
QSFP+ (for Cisco
Nexus 2000 Series to
Cisco Nexus 6000
Series connectivity)
Cisco QSFP40G BiDi
QSFP-40G-SR-BD
Short-reach Transceiver
Cisco QSFP
40GBASE-LR4
Transceiver Module,
LC, 10KM
QSFP-40GE-LR4
X
X
X
X
40GBASE-SR4 QSFP
Transceiver
QSFP-40G-SR4
X
X
X
X
QSFP 4x10GBASE-SR
Transceiver
QSFP-40G-CSR4
X
X
X
X
QSFP 40GBASE-LR4
Transceiver, LC, 10KM
QSFP-40G-LR4
X
X
X
X
Cisco Nexus 6000 Series Release Notes, Release 7.x
5
System Requirements
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
LR4
QSFP40G-LR4-LITE
Optics—WSP-Q40GLR
4L
—
—
—
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
1-meter
QSFP-H40G-AOC1M
X
X
X
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
2-meter
QSFP-H40G-AOC2M
X
X
X
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
3-meter
QSFP-H40G-AOC3M
X
X
X
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
5-meter
QSFP-H40G-AOC5M
X
X
X
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
7-meter
QSFP-H40G-AOC7M
X
X
X
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
10-meter
QSFP-H40G-AOC10M
X
X
X
X
Cisco 40GBase-AOC
QSFP direct-attach
Active Optical Cable,
15-meter
QSFP-H40G-AOC15M
X
X
X
X
Cisco QSFP Adapter
Module, 1G (GLC-T,
SX,LH) and 10G with
10G-SFP-SR,
10G-SFP-LR and
10G-SFP-ZR
CVR-QSFP-SFP10G
X
X
X
X
QSFP-H40G-CU1M
X
X
X
X
Hardware
Part Number
7.1(0)N1(1a)
7.1(0)N1(1)
QSFP+
40-Gigabit CU QSFP
module
Cisco Nexus 6000 Series Release Notes, Release 7.x
6
System Requirements
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
Hardware
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
40-Gigabit CU QSFP
module
QSFP-H40G-CU3M
X
X
X
X
40-Gigabit CU QSFP
module
QSFP-H40G-CU5M
X
X
X
X
40-Gigabit CU QSFP
module
QSFP-H40G-ACU7M
X
X
X
X
40-Gigabit CU QSFP
module
QSFP-H40G-ACU10M
X
X
X
X
10 G DWDM
—
—
—
X
SFP-GE-T(=)
Cisco 1000 BASE-T
SFP transceiver module
for Category 5 copper
wire, extended
operating temperature
range, RJ-45 connector
X
X
X
X
QSFP to 4xSFP 10G
Passive Copper Splitter
Cable, 1M
QSFP-4SFP10G-CU1M X
X
X
X
QSFP to 4xSFP 10G
Passive Copper Splitter
Cable, 3M
QSFP-4SFP10G-CU3M X
X
X
X
QSFP to 4xSFP 10G
Passive Copper Splitter
Cable, 5M
QSFP-4SFP10G-CU5M X
X
X
X
QSFP to 4xSFP10G
Active Copper Splitter
Cable, 7M
QSFP-4SFP10G-AC7M X
X
X
X
QSFP to 4xSFP10G
Active Copper Splitter
Cable, 10M
QSFP-4SFP10G-AC10
M
X
X
X
X
Cisco 40GBASE-CR4
QSFP+ to 4
10GBASE-CU SFP+
direct-attach breakout
7-meter cable, active
QSFP-4X10G-AC7M
X
X
X
X
7.1(0)N1(1a)
7.1(0)N1(1)
SFP+ Optical
Cisco Nexus 6000 Series Release Notes, Release 7.x
7
System Requirements
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
Hardware
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
Cisco 40GBASE-CR4
QSFP+ to 4
10GBASE-CU SFP+
direct-attach breakout
10-meter cable, active
QSFP-4X10G-AC10M
X
X
X
X
10-Gigabit Ethernet
SFP (for Cisco Nexus
2000 Series to Cisco
Nexus 6000 Series
connectivity)
FET-10G(=)
X
X
X
X
Cisco 10GBASE-AOC
SFP+ Cable 1 Meter
SFP-10G-AOC1M
X
X
X
X
Cisco 10GBASE-AOC
SFP+ Cable 2 Meter
SFP-10G-AOC2M
X
X
X
X
Cisco 10GBASE-AOC
SFP+ Cable 3 Meter
SFP-10G-AOC3M
X
X
X
X
Cisco 10GBASE-AOC
SFP+ Cable 5 Meter
SFP-10G-AOC5M
X
X
X
X
Cisco 10GBASE-AOC
SFP+ Cable 7 Meter
SFP-10G-AOC7M
X
X
X
X
Cisco 10GBASE-AOC
SFP+ Cable 10 Meter
SFP-10G-AOC10M
X
X
X
X
QSFP-4X10G-AOC1M
Cisco 40GBase-AOC
QSFP to 4 SFP+ Active
Optical breakout Cable,
1-meter
X
X
X
X
QSFP-4X10G-AOC2M
Cisco 40GBase-AOC
QSFP to 4 SFP+ Active
Optical breakout Cable,
2-meter
X
X
X
X
QSFP-4X10G-AOC3M
Cisco 40GBase-AOC
QSFP to 4 SFP+ Active
Optical breakout Cable,
3-meter
X
X
X
X
QSFP-4X10G-AOC5M
Cisco 40GBase-AOC
QSFP to 4 SFP+ Active
Optical breakout Cable,
5-meter
X
X
X
X
Cisco Nexus 6000 Series Release Notes, Release 7.x
8
7.1(0)N1(1a)
7.1(0)N1(1)
System Requirements
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
QSFP-4X10G-AOC7M
Cisco 40GBase-AOC
QSFP to 4 SFP+ Active
Optical breakout Cable,
7-meter
X
X
X
X
Cisco 40GBase-AOC
QSFP-4X10G-AOC10
QSFP to 4 SFP+ Active M
Optical breakout Cable,
10-meter
X
X
X
X
Hardware
Part Number
7.1(0)N1(1a)
7.1(0)N1(1)
1G Optics
Gigabit Ethernet SFP,
LH transceiver
GLC-LH-SMD
X
X
X
X
Gigabit Ethernet SFP,
EX transceiver
GLC-EX-SMD
6.0(2)N1(2)
and later
6.0(2)N1(2)
and later
6.0(2)N1(2)
and later
6.0(2)N1(2)
and later
Cisco GE SFP, LC
connector SX
transceiver
GLC-SX-MM
X
X
X
X
100 GB SR10 Optic
CXP-100G-SR10
—
—
—
X
100 GB SR12 Optic
CXP-100G-SR12
—
—
—
X
SFP-H10GB-CU1M
X
X
X
X
10GBASE CU SFP+
SFP-H10GB-CU1.5M
cable, 1.5 meter, passive
X
X
X
X
10GBASE CU SFP+
SFP-H10GB-CU2M
cable, 2 meters, passive
X
X
X
X
10GBASE CU SFP+
cable, 2.5 meters,
passive
SFP-H10GB-CU2.5M
X
X
X
X
Cisco 10GBASE-CU
SFP+ cable, 3 meters,
passive
SFP-H10GB-CU3M
X
X
X
X
Cisco 10GBASE-CU
SFP+ Cable, 5 meters,
passive
SFP-H10GB-CU5M
X
X
X
X
10GBASE-CU SFP+
Cable (7 meters)
SFP-H10GB-
ACU7M(=)
X
X
X
X
CXP Optics
SFP+ Copper
Cisco 10GBASE-CU
SFP+ cable 1 meter,
passive
Cisco Nexus 6000 Series Release Notes, Release 7.x
9
System Requirements
Table 2
Hardware Supported by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
Hardware
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
10GBASE-CU SFP+
Cable (10 meters)
SFP-H10GB-
ACU10M(=)
X
X
X
X
8-Gbps Fibre
Channel—short
wavelength
DS-SFP-FC8G-SW(=)
—
X
X
X
8-Gbps Fibre
Channel—long
wavelength
DS-SFP-FC8G-LW(=)
—
X
X
X
4-Gbps Fibre
Channel—short
wavelength
4DS-SFP-FC4G-SW(=) —
X
X
X
4-Gbps Fibre
Channel—long
wavelength
4DS-SFP-FC4G-LW(=) —
X
X
X
7.1(0)N1(1a)
7.1(0)N1(1)
Fibre Channel
1. The Cisco Nexus 2248PQ FEX does not support Gen1 cables.
2. The 100 Gb Ethernet LEM is not supported in the N6K-C6004-96Q chassis.
Online Insertion and Removal Support
Table 3 shows the hardware and Cisco NX-OS Release 7.x software that supports online insertion and removal (OIR)
Note
The expansion modules must be powered off prior to removal.
.
Table 3
Online Insertion and Removable Support by Cisco NX-OS Release 7.x Software
Cisco NX-OS Release Support
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.1(0)N1(1a)
7.0(3)N1(1)
7.1(0)N1(1)
Cisco Nexus 6004
switch
N6K-C6004
—
—
—
—
Cisco Nexus 6001P
switch
N6K-C6001-64P
—
—
—
—
Cisco Nexus 6001T
switch
N6K-C6001-64T
—
—
—
—
Hardware
Cisco Nexus 6000 Series
Cisco Nexus 6000 Series Release Notes, Release 7.x
10
New and Changed Features
Table 3
Online Insertion and Removable Support by Cisco NX-OS Release 7.x Software (continued)
Cisco NX-OS Release Support
Hardware
Part Number
7.0(0)N1(1)
7.0(2)N1(1)
7.0(1)N1(1)
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.1(0)N1(1a)
7.0(3)N1(1)
7.1(0)N1(1)
Cisco Nexus 6004
switch
N6K-C6004-96Q
X
X
X
X
Nexus 6004 module 12Q N6K-6004-M12Q
40-Gigabit Ethernet
Linecard Expansion
Module/FCoE, spare
X
X
X
X
The Cisco Nexus 6004
Unified Port Linecard
Expansion Module
N6004X-M20UP
—
X
X
X
100 Gigabit Ethernet
Line Card Expansion
Module (LEM)
N5696-M4C
—
—
—
X
Expansion Modules
New and Changed Features
This section describes the new features introduced in Cisco NX-OS Release 7.x.
•
New Software Features in Cisco NX-OS Release 7.1(0)N1(1a), page 12
•
New Hardware Features in Cisco NX-OS Release 7.1(0)N1(1a), page 12
•
New Software Features in Cisco NX-OS Release 7.1(0)N1(1), page 12
•
New Hardware Features in Cisco NX-OS Release 7.1(0)N1(1), page 14
•
New Software Features in Cisco NX-OS Release 7.0(5)N1(1a), page 14
•
New Hardware Features in Cisco NX-OS Release 7.0(5)N1(1a), page 15
•
New Software Features in Cisco NX-OS Release 7.0(5)N1(1), page 15
•
New Hardware Features in Cisco NX-OS Release 7.0(5)N1(1), page 15
•
New Software Features in Cisco NX-OS Release 7.0(4)N1(1), page 15
•
New Hardware Features in Cisco NX-OS Release 7.0(4)N1(1), page 15
•
New Software Features in Cisco NX-OS Release 7.0(3)N1(1), page 15
•
New Hardware Features in Cisco NX-OS Release 7.0(3)N1(1), page 15
•
New Software Features in Cisco NX-OS Release 7.0(2)N1(1), page 16
•
New Hardware Features in Cisco NX-OS Release 7.0(2)N1(1), page 16
•
New Software Features in Cisco NX-OS Release 7.0(1)N1(1), page 16
•
New Hardware Features in Cisco NX-OS Release 7.0(1)N1(1), page 17
•
New Software Features in Cisco NX-OS Release 7.0(0)N1(1), page 17
•
New Hardware Features in Cisco NX-OS Release 7.0(0)N1(1), page 21
Cisco Nexus 6000 Series Release Notes, Release 7.x
11
New and Changed Features
New Software Features in Cisco NX-OS Release 7.1(0)N1(1a)
There are no new software features in this release.
New Hardware Features in Cisco NX-OS Release 7.1(0)N1(1a)
There are no new hardware features in this release.
New Software Features in Cisco NX-OS Release 7.1(0)N1(1)
Cisco NX-OS Release 7.1(0)N1(1) is a maintenance release that includes bug fixes and the following
software features and enhancements:
•
CTS with FabricPath, page 12
•
Dynamic ARP Inspection Enhancement, page 12
•
IPv6 vPC/vPC+ Keepalive Support, page 13
•
Isolate and Maintenance Mode Enhancement, page 13
•
ISSU Modifications, page 13
•
Long Distance Support, page 13
•
MET Sharing, page 13
•
Open Management Infrastructure, page 13
•
Password Length Enhancement, page 13
•
Syslog Message as SNMP Trap, page 13
•
Unified Fabric Solution (previously called Dynamic Fabric Automation (DFA)), page 14
•
VLAN Translation, page 14
•
VM Tracker, page 14
•
vPC Border Leaf Support, page 14
CTS with FabricPath
The Cisco TrustSec security architecture has been extended to support Cisco FabricPath environments
including those using VPC+. CTS packet classification can occur before or as traffic enters the fabric,
at which point packet tags are preserved through the fabric for the purpose of applying security policy
to the data path.
Dynamic ARP Inspection Enhancement
Dynamic ARP Inspection (DAI) can validate ARP packets against user-configured ARP access control
lists (ACLs). DAI can be configured to drop ARP packets when the IP/MAC addresses in the packets are
invalid. This is done by configuring ARP based ACLs.
Cisco Nexus 6000 Series Release Notes, Release 7.x
12
New and Changed Features
IPv6 vPC/vPC+ Keepalive Support
IPv6 support for vPC/vPC+ provides IPv6 capabilities for the vPC/vpc+ keepalive from the mgmt0 out-of-band
interface as well from the build-in front ports via SVI.
Isolate and Maintenance Mode Enhancement
Provides the ability to gracefully eject a switch and isolate it from the network so that debugging or an
upgrade can be performed. The switch is removed from the regular switching path and put into a
maintenance mode. Once maintenance on the switch is complete, you can bring the switch into full
operational mode.
ISSU Modifications
In service software updates (ISSUs) are limited to the three previous releases.
Note
Two-level upgrades can be done to get to the latest release 7.1(0)N1(1). For example, the customer can
upgrade from 6.0(2)N2(X) to 7.0(3)N1(1), 7.0(4)N1(1) or 7.0(5)N1(1), and then to 7.1(0)N1(1).
Long Distance Support
Long distance support (20 km/10G & 3 km/40G) for FCoE.
MET Sharing
Improves efficiency in the usage of Multicast Expansion Table (MET) entries in the hardware.
Open Management Infrastructure
Open Management Infrastructure (OMI) is no longer supported.
Password Length Enhancement
The following commands have been added to provide the ability to configure the minimum and
maximum length of a password:
•
userpassphrase min-length length
•
userpassphrase max-length length
•
show userpassphrase length
Syslog Message as SNMP Trap
The following features has been added:
•
User Interface for Persistent Logging
•
Syslog SNMP Traps
•
History Logging
Cisco Nexus 6000 Series Release Notes, Release 7.x
13
New and Changed Features
•
Syslog Message Format
Unified Fabric Solution (previously called Dynamic Fabric Automation (DFA))
This software release is the second release to support enhancements to Cisco's Unified Fabric Solution.
Unified Fabric focuses on simplifying, optimizing, and automating data center fabric environments by
offering an architecture based on four major pillars: Fabric Management, Workload Automation,
Optimized Networking, and Virtual Fabrics.
Each of these pillars provides a set of modular functions which can be used together, or independently,
for ease of adoption of new technologies in the data center environment.
Complete details on the Unified Fabric Solution architecture can be found at:
http://www.cisco.com/go/dfa
VLAN Translation
Allows for the merging of separate Layer 2 domains that might reside in a two data centers that are
connected through some form of Data Center Interconnect (DCI).
VM Tracker
•
Supports automatic VLAN provisioning.
vPC Border Leaf Support
•
Supports redundant border leafs in a vPC+ pair.
New Hardware Features in Cisco NX-OS Release 7.1(0)N1(1)
Cisco NX-OS Release 7.1(0)N1(1) supports the following new hardware:
•
Cisco Nexus 2348TQ FEX (N2K-C2348TQ-10GE)
•
100 G LEM (N5696-M4C)
•
H7 Power Supply Support—support for forward air flow (FAF) (NXA-PHV-1100W) and reverse air
flow (RAF) (NXA-PHV-1100W-B) with both AC and DC power source.
•
10 G DWDM
•
LR4 Optics—WSP-Q40GLR4L (QSFP40G-LR4-LITE)
•
CXP-100G-SR10
•
CXP-100G-SR12
New Software Features in Cisco NX-OS Release 7.0(5)N1(1a)
There are no new software features in this release.
Cisco Nexus 6000 Series Release Notes, Release 7.x
14
New and Changed Features
New Hardware Features in Cisco NX-OS Release 7.0(5)N1(1a)
There are no new hardware features in this release.
New Software Features in Cisco NX-OS Release 7.0(5)N1(1)
There are no new software features in this release.
New Hardware Features in Cisco NX-OS Release 7.0(5)N1(1)
There are no new hardware features in this release.
New Software Features in Cisco NX-OS Release 7.0(4)N1(1)
There are no new software features in this release.
New Hardware Features in Cisco NX-OS Release 7.0(4)N1(1)
Cisco NX-OS Release 7.0(4)N1(1) supports the following new hardware feature:
•
Cisco Nexus 2348UPQ support for QSA (FET-10G, SFP-10G-SR, SFP-10G-ER)
New Software Features in Cisco NX-OS Release 7.0(3)N1(1)
Cisco NX-OS Release 7.0(3)N1(1) is a maintenance release that includes bug fixes and the following
software features and enhancements:
•
Dynamic FCoE Using DFA, page 15
•
FEX Based ACL Classification, page 15
Dynamic FCoE Using DFA
Dynamic Fibre Channel over Ethernet (FCoE) using DFA enables I/O consolidation. It permits both
LAN and SAN traffic to coexist on the same switch and the same wire.
FEX Based ACL Classification
The FEX-based ACL Classification feature uses TCAM resources on a FEX to perform ACL-based
packet classification of incoming packets on the switch. When QoS policies are processed on a FEX, the
policies are enforced on the switch and on the associated FEX or FEXes.
New Hardware Features in Cisco NX-OS Release 7.0(3)N1(1)
Cisco NX-OS Release 7.0(3)N1(1) supports the following new hardware:
Cisco Nexus 6000 Series Release Notes, Release 7.x
15
New and Changed Features
•
Cisco Nexus 2348UPQ FEX (N2K-C2348UPQ)
New Software Features in Cisco NX-OS Release 7.0(2)N1(1)
Cisco NX-OS Release 7.0(2)N1(1) is a maintenance release that includes bug fixes and the following
software features and enhancements:
•
Buffer Utilization Histogram, page 16
Buffer Utilization Histogram
The Buffer Utilization Histogram feature enables you to analyze the maximum queue depths and buffer
utilization in the system in real time.
New Hardware Features in Cisco NX-OS Release 7.0(2)N1(1)
No new hardware features have been added.
New Software Features in Cisco NX-OS Release 7.0(1)N1(1)
Cisco NX-OS Release 7.0(1)N1(1) is a maintenance release that includes bug fixes and the following
software features and enhancements:
•
ACL Logging for IPv6 ACLs, page 16
•
Dynamic FCoE Using FabricPath, page 16
•
Layer 2 CTS Support, page 16
ACL Logging for IPv6 ACLs
The ACL logging feature allows you to monitor IPv6 ACL flows and to log dropped packets on an
interface.
Dynamic FCoE Using FabricPath
Dynamic FCoE extends the capability and reliability of storage networks by leveraging FabricPath
technology to create logical separation of SAN A and SAN B. FCoE VFCs and Interswitch-Links (ISLs)
are dynamically configured, simplifying multihop FCoE deployments in leaf-spine topologies.
Layer 2 CTS Support
The Cisco TrustSec security architecture builds secure networks by establishing clouds of trusted
network devices. Cisco TrustSec also uses the device information acquired during authentication for
classifying, or coloring, the packets as they enter the network. This packet classification is maintained
by tagging packets on ingress to the Cisco TrustSec network so that they can be properly identified for
the purpose of applying security and other policy criteria along the data path.
Cisco Nexus 6000 Series Release Notes, Release 7.x
16
New and Changed Features
New Hardware Features in Cisco NX-OS Release 7.0(1)N1(1)
Cisco NX-OS Release 7.0(1)N1(1) support the following new hardware:
•
Cisco Nexus 5672UP
•
The Cisco Nexus 6004 Unified Port Linecard Expansion Module - N6004X-M20UP
•
Cisco Nexus B22IBM FEX - N2K-B22IBM-P
New Software Features in Cisco NX-OS Release 7.0(0)N1(1)
Cisco NX-OS Release 7.0(0)N1(1) is a major release that includes bug fixes and the following software
features and enhancements:
•
Anycast HSRP, page 17
•
Data Analytics, page 18
•
Dynamic Fabric Automation, page 18
•
Early Warning for FIB Exhaustion, page 18
•
ECN with WRED, page 18
•
ERSPAN with ACL Filtering, page 18
•
FabricPath Operations, Administration, and Management, page 19
•
Intermediate System to Intermediate System Protocol, page 19
•
Layer 2 Bidirectional Forwarding Detection, page 19
•
Multi-Destination Switch Port Analyzer, page 19
•
Multi-Destination Tree, page 19
•
OpenFlow v1.0, page 19
•
Overload Bit, page 20
•
Port Channel Max Links, page 20
•
Q-in-Q VLAN Tunneling, page 20
•
Sampled NetFlow, page 20
•
Switch Port Analyzer with ACL Filtering, page 20
•
Static/Dynamic Network Address Translation, page 20
•
TCAM Carving, page 21
•
VN-Segment, page 21
Anycast HSRP
Anycast HSRP is a FabricPath-based feature in which the traditional HSRP can be extended to an
n-Gateway solution with all the gateways actively forwarding traffic. This feature supports active load
balancing of traffic among all the gateways configured apart for redundancy. A maximum of 4 Gateways
is supported.
Cisco Nexus 6000 Series Release Notes, Release 7.x
17
New and Changed Features
Data Analytics
This feature provides the capability of advanced analytics for network visibility and management.
Critical analytics for network monitoring is supported including Latency Based SPAN, SPAN on Drop,
Micro-Burst Monitor and Switch Latency.
Latency-based SPAN can be used to monitor any packet from an interface when the latency on that
interface exceeds the configured threshold.
SPAN on Drop can be used to configure SPAN on particular packets which would otherwise get dropped
due to congestion, and is used for known unicast packets.
Micro-Burst Monitoring is supported per port both in ingress and egress direction and can be selectively
enabled or disabled in either direction.
Switch Latency provides instantaneous latency and histogram data between a pair of ports and provides
minimum, average, and maximum latency between the slected pairs of ports.
Dynamic Fabric Automation
This software release is the first release to support Cisco's Evolutionary Data Center Fabric solution
called Dynamic Fabric Automation (DFA). DFA is evolutionary and is based on the industry leading
Unified Fabric solution.
DFA focuses on simplifying, optimizing and automating data center fabric environments by offering an
architecture based on four major pillars namely Fabric Management, Workload Automation, Optimized
Networking and Virtual Fabrics. Each of these pillars provide a set of modular functions which can be
used together or independently for easiness of adoption of new technologies in the data center
environment.
Complete details on the DFA architecture can be found at: http://www.cisco.com/go/dfa.
Early Warning for FIB Exhaustion
When the Forwarding Information Base (FIB) table is 90% full, the following messages is displayed:
FIB_TCAM_RESOURCE_EXHAUSTION:FIB TCAM usage is at 90 percent.
ECN with WRED
Currently, the congestion control and avoidance algorithms for Transmission Control Protocol (TCP) are
based on the idea that packet loss is an appropriate indication of congestion on networks transmitting
data using the best-effort service model. When a network uses the best-effort service model, the network
delivers data if it can, without any assurance of reliability, delay bounds, or throughput. However, these
algorithms and the best-effort service model are not suited to applications that are sensitive to delay or
packet loss (for instance, interactive traffic including Telnet, web-browsing, and transfer of audio and
video data). Weighted Random Early Detection (WRED), and by extension, Explicit Congestion
Notification (ECN), solves this problem.
ERSPAN with ACL Filtering
With ERSPAN traffic the destination is remote and the overall impact of bandwidth congestion can be
significant. The ERSPAN with ACL filtering feature allows you to filter ERSPAN traffic so that you can
reduce bandwidth congestion. To configure ERSPAN with ACL filtering, you use ACL’s for the session
to filter out traffic that you do not to span. An ACL is a list of permissions associated to any entity in the
Cisco Nexus 6000 Series Release Notes, Release 7.x
18
New and Changed Features
system; in the context of a monitoring session, an ACL is a list of rules which results in the spanning of
traffic that matches the ACL criteria, saving bandwidth for more meaningful data. The filter would apply
on all sources in the session (VLAN or interface).
FabricPath Operations, Administration, and Management
Support for Fabric Path Operations, Administration and Management has been added in this software
release.
Intermediate System to Intermediate System Protocol
Intermediate System to Intermediate System (IS-IS) is an Interior Gateway Protocol (IGP) based on
Standardization (ISO)/International Engineering Consortium (IEC) 10589. Cisco Nexus devices support
Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6). IS-IS is a dynamic link-state
routing protocol that can detect changes in the network topology and calculate loop-free routes to other
nodes in the network. Each router maintains a link-state database that describes the state of the network
and sends packets on every configured link to discover neighbors. IS-IS floods the link-state information
across the network to each neighbor. The router also sends advertisements and updates on the link-state
database through all the existing neighbors.
Layer 2 Bidirectional Forwarding Detection
The Bidirectional Forwarding Detection (BFD) provides fast forwarding-path failure detection times for
media types, encapsulations, topologies, and routing protocols. You can use BFD to detect forwarding
path failures at a uniform rate, rather than at variable rates for different protocol hello mechanisms. BFD
makes network profiling and planning easier and reconvergence time consistent and predictable.
Multi-Destination Switch Port Analyzer
Local Switch Port Analyzer (SPAN) and SPAN-on-Drop sessions can support multiple destination ports.
This allows traffic in a single local SPAN session or a SPAN-on-Drop session also to be monitored and
sent to multiple destinations.
Multi-Destination Tree
A Multi-Destination Tree (MDT), also referred to as a forwarding tag or ftag, is a spanning-tree used for
forwarding packets within a topology. A topology has two MDTs/ ftags: topology 0 has ftag 1 and 2,
topology 1 has ftag 3 and 4.
OpenFlow v1.0
The OpenFlow feature is a specification from the Open Networking Foundation (ONF) that defines a
flow-based forwarding infrastructure (L2-L4 Ethernet switch model) and a standardized application
programmatic interface (protocol definition) to learn capabilities, add and remove flow control entries
and request statistics. OpenFlow allows a controller to direct the forwarding functions of a switch
through a secure channel.
Cisco Nexus 6000 Series Release Notes, Release 7.x
19
New and Changed Features
One Platform Kit (OnePK)
Support has been added for One Platform Kit (onePK) Turbo API. OnePK is a cross-platform API and
software development kit that enables you to develop applications that interact directly with Cisco
networking devices. onePK provides you access to networking services by using a set of controlled APIs
that share the same programming model and style. For more information, see the following URL:
http://www.cisco.com/en/US/partner/prod/iosswrel/onepk.html
Overload Bit
Intermediate System to Intermediate System (IS-IS) uses the overload bit to tell other routers not to use
the local router to forward traffic but to continue routing traffic destined for that local router.
Port Channel Max Links
The Port Channel Max Links feature defines the maximum number of bundled ports allowed in an LACP
port channel.
Q-in-Q VLAN Tunneling
A Q-in-Q VLAN tunnel enables a service provider to segregate the traffic of different customers in their
infrastructure, while still giving the customer a full range of VLANs for their internal use by adding a
second 802.1Q tag to an already tagged frame.
Sampled NetFlow
The Sampled NetFlow feature samples incoming packets on an interface. The packets sampled then
qualify to create flows. Sampled NetFlow reduces the amount of export data sent to the collector by
limiting the number of packets that create flows and the number of flows. It is essential when flows are
created on a line card or external device, instead of on the forwarding engine.
Switch Port Analyzer with ACL Filtering
The Switch Port Analyzer (SPAN) with Access Control List (ACL) filtering feature allows you to filter
SPAN traffic so that you can reduce bandwidth congestion. To configure SPAN with ACL filtering, you
use ACL’s for the session to filter out traffic that you do not want to span. An ACL is a list of permissions
associated to any entity in the system; in the context of a monitoring session, an ACL is a list of rules
which results in spanning only the traffic that matches the ACL criteria, saving bandwidth for more
meaningful data. The filter can apply to all sources in the session.
Static/Dynamic Network Address Translation
Network Address Translation (NAT) enables private IP internetworks that use nonregistered IP addresses
to connect to the Internet. NAT operates on a device, usually connecting two networks, and translates
private (not globally unique) IP addresses in the internal network into legal IP addresses before packets
are forwarded to another network. You can configure NAT to advertise only one IP address for the entire
network to the outside world. This ability provides additional security, effectively hiding the entire
internal network behind one IP address.
Cisco Nexus 6000 Series Release Notes, Release 7.x
20
Upgrading or Downgrading to a New Release
TCAM Carving
You can create and administer up to 16 templates to resize the regions in ternary content-addressable
memory (TCAM).
VN-Segment
The VN-Segment feature defines a new way to "tag" packets on the wire replacing the traditional 802.1Q
VLAN tag. This feature uses a 24-bit tag also referred to as a Virtual Network Identifier (VNI). CE links
(access and trunk) carry traditional VLAN tagged/untagged frames. These are the VN-Segment Edge
ports.
Web Cache Control Protocol v2
WCCPv2 specifies interactions between one or more Cisco NX-OS routers and one or more cache
engines. WCCPv2 transparently redirects selected types of traffic through a group of routers. The
selected traffic is redirected to a group of cache engines to optimize resource usage and lower response
times.
New Hardware Features in Cisco NX-OS Release 7.0(0)N1(1)
Cisco NX-OS Release 7.0(0)N1(1) supports the following new optics:
•
QSFP-H40G-AOCxM (1/2/3/5/7/10m)
•
QSFP-40G-SR-BD
•
SFP-10G-AOCxM (1/2/3/5/7/10m)
•
QSFP-40G-LR4
•
PSF1PXA3.5MBU
•
PSF1PXA4MBU
•
QSFP-4X10G-AOCxM (1/2/3/5/7/10m)
Upgrading or Downgrading to a New Release
This section describes the upgrade and downgrade paths that are supported for Cisco NX-OS
Release 7.1(0)N1(1a) on the Cisco Nexus device.
Table 4 shows the upgrade and downgrade possibilities for Cisco NX-OS Release 7.1(0)N1(1a). For
more information, see the Cisco Nexus 6000 Series NX-OS Software Upgrade and Downgrade Guide,
Release 7.1(0)N1(1a).
Cisco Nexus 6000 Series Release Notes, Release 7.x
21
Limitations
Table 4
Cisco NX-OS Release 7.1(0)N1(1a) Supported Upgrade and Downgrade Paths
Current Cisco NX-OS Release Upgrade to NX-OS Release 7.1(0)N1(1a)
Nondisruptive upgrade 1
7.1(0)N1(1)
Note
Disruptive downgrade
During a disruptive upgrade from
Note
7.1(0)N1(1) to 7.1(0)N1(1a) or a future
release, there is an issue with vPC hap
reset (see CSCus39830 for more
details).
Nondisruptive upgrade 1
7.0(5)N1(1a)
7.0(5)N1(1)
7.0(4)N1(1)
7.0(3)N1(1)
Downgrade from NX-OS
Release 7.1(0)N1(1a)
If the 20UPLEM is installed in your
chassis, you cannot downgrade to
7.0(0)N1(1).
Disruptive downgrade
Note
If the 20UPLEM is installed in your
chassis, you cannot downgrade to
7.0(0)N1(1).
1. Disruptive upgrade when operating in 10G fabric mode.
Note
Nondisruptive upgrade to 7.0(4)N1(1) from this release requires an intermediate upgrade to 7.0(2)N1(1).
Note
Disruptive upgrade is required before configuring VLAN translation on FEX for 7.1(0)N1(1).
Limitations
This section describes the limitations for Cisco NX-OS Release 7.1(0)N1(1a).
•
The Server Virtualization Switch (SVS) connection is not deleted during a rollback when NIV is
enabled. To resolve this issue, delete the current SVS connection and reapply the original SVS
connection. For details, see CSCts17033.
•
If you configure a Cisco Nexus 2248TP port to 100 Mbps instead of autonegotiation, then
autonegotiation does not occur, which is the expected behavior. Both sides of the link should be
configured to both hardwired speed or both autonegotiate.
no speed—Autonegotiates and advertises all speeds (only full duplex).
speed 1000—Autonegotiates only for an 802.3x pause.
speed 100—Does not autonegotiate; pause cannot be advertised. The peer must be set to not
autonegotiate and fix at 100 Mbps (similar to the N2248TP). For details, see CSCte81998.
•
When a private VLAN port is configured as a TX (egress) SPAN source, the traffic seen at the SPAN
destination port is marked with the VLAN of the ingressed frame. There is no workaround.
•
In large-scale configurations, some Cisco Nexus 2000 Series Fabric Extenders might take up to 3
minutes to appear online after entering the reload command. A configuration can be termed large
scale when the maximum permissible Cisco Nexus 2000 Series Fabric Extenders are connected to a
Cisco Nexus 6000 Series switch, all host-facing ports are connected, and each host-facing interface
has a large configuration that supports the maximum permissible ACEs per interface.
•
The Cisco Nexus 2148 Fabric Extender does not support frames with the dot1q vlan 0 tag.
Cisco Nexus 6000 Series Release Notes, Release 7.x
22
Limitations
•
VACLs of more than one type on a single VLAN are unsupported. Cisco NX-OS software supports
only a single type of VACL (either MAC, IPv4, or IPv6) applied on a VLAN. When a VACL is
applied to a VLAN, it replaces the existing VACL if the new VACL is a different type. For instance,
if a MAC VACL is configured on a VLAN and then an IPv6 VACL is configured on the same VLAN,
the IPv6 VACL is applied, and the MAC VACL is removed.
•
A MAC ACL is applied only on non-IP packets. Even if there is a match eth type = ipv4 statement
in the MAC ACL, it does not match an IP packet. To avoid this situation, use IP ACLs to apply access
control to the IP traffic instead of using a MAC ACL that matches the EtherType to IPv4 or IPv6.
•
Multiple boot kickstart statements in the configuration are not supported.
•
If you configure Multiple Spanning Tree (MST) on a Cisco Nexus 6000 Series switch, avoid
partitioning the network into a large number of regions.
•
By design, vEth interfaces do not share the underlying behavior of a vPC port. As a result, a VLAN
is not suspended when the peer switch suspends it. For example, when you shut a VLAN on a
primary switch, the VLAN continues to be up on the secondary switch when the vEth interface is
on a FEX. When the VLAN on the primary switch goes down, the VLAN on the vEth interface on
the primary is suspended, but the vEth on the secondary switch remains up because it is an active
VLAN on the secondary switch.
•
The packet length in the IP GRE header of a packet exiting from the switch is not equal to the MTU
value configured in the ERSPAN source session. This is true for SPAN or ERSPAN. The Cisco
Nexus 6000 Series switch terminates in multiples of 16 bytes. If MTU is configured as 100 bytes,
then the actual truncated packet is 96 bytes.
•
Unknown unicast packets in FabricPath ports are counted as multicast packets in interface counters.
This issue occurs when unknown Unicast packets are sent and received with a reserved multicast
address (that floods to a VLAN) in the outer FabricPath header, and the Cisco Nexus 6000 Series
switch increments the interface counter based on the outer FabricPath header. As a result, Multicast
counters are incremented. There is no workaround for this issue.
•
In an emulated switch setup, an inband keepalive does not work. The following steps are
recommended for peer keepalive over SVI when a switch is in FabricPath mode:
– Use a dedicated front panel port as a vPC+ keepalive. The port should be in CE mode.
– Use a dedicated VLAN to carry the keepalive interface. The VLAN should be a CE VLAN.
– Add the management keyword to the corresponding SVI so that the failure of a Layer 3 module
will not bring down the SVI interface.
– Enter the dual-active exclude interface-vlan keepalive-vlan command to prevent the SVI from
going down on the secondary when a peer-link goes down.
•
The limit of the table that holds the Router MAC and Virtual MAC entries for determining packet
routing or switching is 500 entries. The Virtual MAC entries, the MAC used for HSRP/VRRP that
is also programmed in this table, can be shared across multiple Layer 3 interfaces. If SVIs 1–100 all
have the same group number configured, just one entry needs to be programmed in this table. We
recommend that you configure the same group ID across all or multiple Layer 3 interfaces/SVIs. If
multiple group IDs are configured on an Layer 3 interface, we recommend that you configure the
same set of group IDs across all or multiple Layer 3 interfaces. This configuration supports
HSRP/VRRP on more interfaces.
•
The maximum IP MTU that can be set on Layer 3 interfaces running Layer 3 protocols is 9192
because of the internal header used inside the switch. The related network-qos policy must be set to
9216.
Cisco Nexus 6000 Series Release Notes, Release 7.x
23
Limitations
Limitations on the Cisco Nexus 6000
The limitations on the Cisco Nexus 6000 Series switch are as follows:
•
SPAN Limitations on Fabric Extender Ports, page 24
•
Layer 3 Limitations, page 25
SPAN Limitations on Fabric Extender Ports
The SPAN limitations on Fabric Extender ports are as follows:
•
On a Cisco Nexus device, if the SPAN source is a FEX port, the frames will always be tagged when
leaving the SPAN destination.
•
On a Cisco Nexus 6000 Series switch, if the SPAN source is an access port on a switch port or FEX
port, the spanned frames at the SPAN destination will be tagged.
•
On a Cisco Nexus 6000 Series switch, if the SPAN source is on an access port on the switch port,
the frames will not be tagged when leaving the SPAN destination.
•
Ports on a FEX can be configured as a tx-source in one session only.
If two ports on the same FEX are enabled to be tx-source, the ports need to be in the same session.
If you configure a FEX port as a tx-source and another port belonging to the same FEX is already
configured as a tx-source on a different SPAN session, an error is displayed on the CLI.
In the following example, Interface Ethernet100/1/1 on a FEX 100 is already configured as a
tx-source on SPAN session-1:
swor28(config-monitor)# show running-config monitor
version 7.0(0)N1(1)
monitor session 1
source interface Ethernet100/1/1 tx
destination interface Ethernet1/37
no shut
If you add an interface Ethernet100/1/2 as a tx-source to a different SPAN session (session-2) the
following error appears:
swor28(config)# monitor session 2
swor28(config-monitor)# source interface ethernet 100/1/2 tx
ERROR: Eth100/1/2: Ports on a fex can be tx source in one session only
swor28(config-monitor)#
•
When a FEX port is configured as a tx-source, the multicast traffic is spanned on all VLANs that the
tx-source port is a member of. The FEX port sends out only multicast packets that are not filtered
by IGMP snooping. For example, if FEX ports 100/1/1–12 are configured on VLAN 11 and the
switch port 1/5 sends multicast traffic on VLAN 11 in a multicast group, and hosts connected to FEX
ports 100/1/3–12 are interested in receiving that multicast traffic (through IGMP), then that
multicast traffic goes out on FEX ports 100/1/3–12, but not on 100/1/1–2.
If you configure SPAN Tx on port 100/1/1, although the multicast traffic does not egress out of port
100/1/1, the SPAN destination does receive that multicast traffic, which is due to a design limitation.
•
When a FEX port is configured as both SPAN rx-source and tx-source, broadcast non-IGMP Layer-2
multicast frames as well as unknown unicast frames originating from that port might be seen twice
on the SPAN destination: once on the ingress and once on the egress path. On the egress path, the
frames are filtered by the FEX to prevent them from going out on the same port on which they were
Cisco Nexus 6000 Series Release Notes, Release 7.x
24
Caveats
received. For example, if FEX port 100/1/1 is configured on VLAN 11 and is also configured as
SPAN rx-source and tx-source and a broadcast frame is received on that port, the SPAN destination
recognizes two copies of the frame, even though the frame is not sent back on port 100/1/1.
•
A FEX port cannot be configured as a SPAN destination. Only a switch port can be configured and
used as a SPAN destination.
•
With a SPAN on Latency session, FEX ports cannot be configured as source or destination.
Layer 3 Limitations
Asymmetric Configuration
In a vPC topology, two Cisco Nexus 6000 Series switches configured as vPC peer switches need to be
configured symmetrically for Layer 3 configurations such as SVIs, a peer gateway, routing protocol and
policies, and RACLs.
Note
vPC consistency check does not include Layer 3 parameters.
Caveats
This section includes the open and resolved caveats for this release. Each caveat has a link to the Bug
Toolkit, where you can find details.
This section includes the following topics:
•
Open Caveats, page 25
•
Resolved Caveats in Cisco NX-OS Release 7.1(0)N1(1a), page 28
•
Resolved Caveats in Cisco NX-OS Release 7.1(0)N1(1), page 29
•
Resolved Caveats in Cisco NX-OS Release 7.0(5)N1(1a), page 29
•
Resolved Caveats in Cisco NX-OS Release 7.0(5)N1(1), page 29
•
Resolved Caveats in Cisco NX-OS Release 7.0(4)N1(1), page 29
•
Resolved Caveats in Cisco NX-OS Release 7.0(3)N1(1), page 30
•
Resolved Caveats in Cisco NX-OS Release 7.0(2)N1(1), page 30
•
Resolved Caveats in Cisco NX-OS Release 7.0(1)N1(1), page 30
•
Resolved Caveats in Cisco NX-OS Release 7.0(0)N1(1), page 31
Open Caveats
Table 5 lists descriptions of open caveats in Cisco NX-OS Release 7.1(0)N1(1a).
The record ID links to the Cisco Bug Toolkit where you can find details about the caveat.
Cisco Nexus 6000 Series Release Notes, Release 7.x
25
Caveats
Table 5
Cisco NX-OS Release 7.x Open Caveats
Record Number Open Caveat Headline
CSCts71048
On an NPV switch, VFCs do not come up after delete/add VLAN/VSAN.
CSCty33678
MACs not synced after ISSU on AA HIF trink with PSEC;non-default timers.
CSCuc12211
Channel-group configuration missing after reload on HIF port.
CSCuc25187
Config-sync is unable to remove the VLAN QoS policy and offset configuration.
CSCuc26047
Reset due to kernel panic.
CSCuc43503
The IGMP vPC optimization knob does not work when the feature-set virtualization
is configured.
CSCud43962
CDPv6 shows addresses of different interfaces and not the connected interfaces.
CSCud53059
DAI is blocking traffic for HIF ports.
CSCue22038
Unable to power on the module after powering off the module.
CSCuf16457
On a Cisco Nexus 6000 Series switch, applying policy maps fails with the error
%RPM-2-PPF_SES_VERIFY.
CSCuf47724
Carmel: SVI Counters show incorrect results.
CSCuf52331
Handle minimum suppression value in switch/HIF/NIF storm-control.
CSCuf82183
In some scenarios, policy statistics are not enabled when a service policy is applied
to ports.
CSCug66129
STP loops are detected when root re-selection is triggered in a nonconverged STP
topology.
CSCug72464
The Cisco Nexus 6004 needs "purge module" cli to clean up the configuration
properly following a LEM OIR.
CSCug72465
A test harness does not properly treat closing of the TCP flow.
CSCug90859
N6004-PBR is not working on PVLAN SVI.
CSCug90859
On the Cisco Nexus 6004 switch, PBR does not work on a PVLAN SVI.
CSCuh04973
The default-interface command is not resetting the speed command in the
HIF/switch interface.
CSCuh17828
On a Cisco Nexus 6000 Series switch, when the command sequence copy file start
is used, copying the saved configuration to the running configuration takes too long.
CSCuh23056
N6004- The error %FWM-2-FIB_TCAM_RESOURCE_EXHAUSTIO- occurs with a
non-default HRT template.
CSCuh44777
Support should be available to log an enabled IP ACL as a class-map match.
CSCuh97761
MTU violated packets are not accounted as output errors in "show interface eth x
counter detailed."
CSCuj12958
U6RIB structure errors seen during withdraw/add routes.
CSCuj43607
NAT: With same static and dynamic NAT policy, packets punted to CPU.
CSCuj54486
Multicast packets drop for certain flows after FEX reload.
CSCuj58467
Router MAC is not getting installed when changing the ASID.
CSCuj69824
Python script is not working when called using the python script_name command.
CSCuj83153
POAP: Addition of python-run and python-exec files to bootflash.
Cisco Nexus 6000 Series Release Notes, Release 7.x
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Caveats
Table 5
Cisco NX-OS Release 7.x Open Caveats (continued)
Record Number Open Caveat Headline
CSCul48098
Unable to remove or add “system default interface pause mode edge/Core”
CSCul73862
FP-POAP: Interface not locked on converting FP port to CE.REOP.
CSCul81869
10Mb FEX:ISSU downgrade from 7.0(0)N1(1) to 6.0(2)N2(1) should be
incompatible with Speed 10.
CSCum08767
WCCP: Interfaces level CLI configurations removed after invalid ID to spm.
CSCum11052
MAC address out of sync between two switches.
CSCun03226
Entering the shutdown/no shutdown commands is needed to bring up the FC scale
setup.
CSCun82513
Maximum number of recommended ports for native FC feature is 48.
CSCun88858
Duplicate DHCPv4 discover packets seen on PVLAN with DHCP relay.
CSCuo02594
mgmt0 connectivity issues after non-disruptive ISSU to 7.0(1)N1(1).
CSCuo08054
FEX interface does not reflect the correct traffic rate.
CSCuo28351
Pulled VLAN stuck in delete hold down state after rollback.
CSCuo40189
Discards and error counter for DVFC.
CSCuo49139
Locally sourced multicast SM traffic needs mandatory PIM RP configuration.
CSCuo76832
DVFC counters are not visible immediately after clear counters.
CSCup19403
AA FEX flogi failure.
CSCup22663
Multiple vulnerabilities in OpenSSL.
CSCup35829
QSFP Finisar NIF link takes more than 6 minutes to come up.
CSCup60352
multicast traffic not received equally on HIF ports spread across ss blocks.
CSCup70305
Queuing policy on HIF not working for Layer 2 multicast traffic.
CSCuq70997
CRC error after mode change.
CSCuq90979
Rebranded 12Q CR LEM is coming up with 7.0(3)N1(1) image.
CSCuq98662
Link up issues with copper cables.
CSCuq99189
PCS not getting completed on some of the links with AOC cables.
CSCur05017
Product evaluation for CVE-2014-6271 and CVE-2014-7169.
CSCur09549
Config sync rollback failure for failed port-channel member.
CSCup62695
100G:SOD does not span Century dropped packets.
CSCup76729
100G: Traffic not hashed over MCT PO.
CSCuq09848
SPOM: When appmgr deletes a group, the switch does not unsubscribe.
CSCuq12452
CLEM: system shuts down with 3 Power supply.
CSCuq23466
CLEM: L2MP: Traffic between two switch IDs is limited to 40g
CSCuq38193
100G:Cos does not get mapped to right queue if policy is applied at inter.
CSCuq56923
Logging level virtual-service reverts to default after an NX-OS upgrade.
CSCuq57437
100G:ACL-based classification not supported.
CSCuq61530
Secure LDAP does not work over LDAPS port.
CSCuq68153
FEXes go offline when removing the detachable VLAN command.
Cisco Nexus 6000 Series Release Notes, Release 7.x
27
Caveats
Table 5
Cisco NX-OS Release 7.x Open Caveats (continued)
Record Number Open Caveat Headline
CSCuq70778
100G:VLAN QoS policy does not take right queue in Century.
CSCuq76905
100G:Scheduling not working for unknown unicast/multicast traffic.
CSCuq86867
100G:Century Limitation on forwarding control traffic to suphi/lo queues.
CSCuq89049
FC4 Type missing for hosts in the FCNS table.
CSCuq94445
ISSU failed. Maximum downtime exceeded.
CSCuq96727
Upgrade failed. Return code 0x4093003B (max downtime exceeded)
CSCur34233
100G port channels limited to 5 ports, CLI blocked for more than 5 ports.
CSCur45066
FC packet drops for 45-60 seconds on SAN PO member shutdown /no shutdown.
CSCur46582
“Ethpm Internal Error” message while disabling dot1q-tunnel on HIF ports.
CSCur49982
FEX takes more than six minutes to come online in AA mode.
CSCur51021
FEXs get stuck in AA version mismatch when ISSD back to 7.0(5)N1(1) image.
CSCur55637
VLAN map configuration through switch profile, offline/online on secondary.
CSCur61078
Unicast TX and RX counters incrementing on HIF without traffic.
CSCur72846
Multi mobility domain and FCOE coexistence does not work.
CSCur83783
ISSD with CLEM in switch not supported.
CSCur86478
With per-port VLAN mapping on an FCoE VLAN, FCoE traffic stopped.
CSCur89671
Cannot add ports into port-channel with Multi-MD using device conformance.
CSCur90171
100G: In store and forward, 10 G fab-mode buffer gets stuck for higher frames.
CSCur95371
VXLAN for working on N5696-M4C.
CSCus03035
Reload AA FEX with VLAN mapping, PO mem ports in suspend state.
CSCus04748
Mapping for installed on one of the FEXes for 2lvpc PO.
CSCus16779
FEX VLAN translation with multiple HIF PO flaps might stop Layer 2 VLAN
forwarding.
CSCus18209
FEX VLAN translation with multiple HIF PO flaps might stop Layer 2 VLAN
forwarding.
CSCus22741
DRAP process crash after FP domain restart.
CSCus39830
After disruptive ISSU from 7.1(0)N1(1) to 7.1(0)N1(1a) primary vPC hap reset.
Resolved Caveats in Cisco NX-OS Release 7.1(0)N1(1a)
Table 6
Cisco NX-OS Release 7.1(0)N1(1a) Resolved Caveats
Record Number
Resolved Caveat Headline
CSCus31100
After upgrade to 7.1(0)N1(1), vPCs in down state.
CSCus39388
Alt route missing for vPC.
CSCus18209
FEX VLAN translation with multiple HIF PO flaps might stop Layer 2 VLAN
forwarding.
Cisco Nexus 6000 Series Release Notes, Release 7.x
28
Caveats
Resolved Caveats in Cisco NX-OS Release 7.1(0)N1(1)
Table 7
Cisco NX-OS Release 7.1(0)N1(1) Resolved Caveats
Record Number
Resolved Caveat Headline
CSCul35819
BPDUGuard not activated on disallowed edge trunk VLANs.
CSCum68574
Do not advertise Anycast SID when overload asserted.
CSCur29864
HIF vPC in suspended state after removing global mobility-domain detect VLANs.
CSCun98175
N6K nfp process crash.
Resolved Caveats in Cisco NX-OS Release 7.0(5)N1(1a)
There are no resolved caveats in this release.
Resolved Caveats in Cisco NX-OS Release 7.0(5)N1(1)
Table 8
Cisco NX-OS Release 7.0(5)N1(1) Resolved Caveats
Record Number
Resolved Caveat Headline
CSCui43663
Python asking for password after write erase reload.
CSCuo17751
Frame drop on egress.
CSCup82567
Config stuck after interface down during vPC bringup.
CSCuq98902
First port on N2K-B22HP-P fails on upgrade to 7.0(3)N1(1).
CSCur01134
Powered down due to fan policy trigger after ISSU.
CSCur05017
N5K/N6K evaluation for CVE-2014-6271 and CVE-2014-7169.
CSCur09549
Configuration sync rollback failure for failed port channel member.
Resolved Caveats in Cisco NX-OS Release 7.0(4)N1(1)
Table 9
Cisco NX-OS Release 7.0(4)N1(1) Resolved Caveats
Record Number
Resolved Caveat Headline
CSCty86291
MTS buffer exhaustion with sequential add of large VLANs.
CSCuo44440
QSA transceiver support needed on NIF.
CSCuo68435
Programming of updated FabricPath FWD entries to hardware delayed.
CSCup45110
Scale setup error message when clear stats.
CSCup46036
Fan OIR issues.
CSCup78930
FEX process crash after switches in fabric-path are reset.
CSCup87395
Configuration sync failures with no cpd enable and pre-provisioning.
CSCuq27517
QD process crash.
Cisco Nexus 6000 Series Release Notes, Release 7.x
29
Caveats
Table 9
Cisco NX-OS Release 7.0(4)N1(1) Resolved Caveats (continued)
Record Number
Resolved Caveat Headline
CSCuq27905
The clear copp stats command also clears qos statistics.
CSCuq36827
Routing unknown u/c and link local b/c packets.
CSCuq54187
vPC auto-recovery reverts to default delay value after switch reload.
CSCuq61734
ACLMGR crash when show startup-configuration command is entered after
access-list deletion.
CSCuq62914
Configuration sync failed for storm-control under FEX interface.
CSCuq70941
The inherit command on Nexus is not working with TACACS authorization.
Resolved Caveats in Cisco NX-OS Release 7.0(3)N1(1)
Table 10
Cisco NX-OS Release 7.0(3)N1(1) Resolved Caveats
CSCun57615
FP topo includes nonFP VLAN if newly created after non-destructive ISSU from
6.0.2.N2.3.
CSCun74416
Shut/no shut of VE, VF is required after non-disruptive ISSU to release 7.0(1)N1(1).
CSCuo63486
LLDP - link err-disabled upon reload when dcbx tlv is disabled.
Resolved Caveats in Cisco NX-OS Release 7.0(2)N1(1)
Table 11
Cisco NX-OS Release 7.0(2)N1(1) Resolved Caveats
CSCue33173
IPSG blocks traffic for private VLAN isolated trunk ports, even when a valid DHCP
snooping binding entry exists.
CSCuj75434
DHCP relay do not work for secondary VLANs for both IPv4 and IPv6.
CSCun26512
DHCP relay support with URPF causes drop at ingress using customer topology.
CSCun77758
Output of ip dhcp relay statistics does not display Discover and Request
Resolved Caveats in Cisco NX-OS Release 7.0(1)N1(1)
Table 12
Cisco NX-OS Release 7.0(1)N1(1) Resolved Caveats
CSCuh30885
RBACL update and programming fails in certain scenarios.
CSCul49154
Flow match statistics are displaying 0 for default frop flow.
CSCul27686
Interfaces might go down after upgrade and cannot be recovered.
CSCum83908
Port-security is not learning all addresses upon changing the port mode.
Cisco Nexus 6000 Series Release Notes, Release 7.x
30
Caveats
Resolved Caveats in Cisco NX-OS Release 7.0(0)N1(1)
Table 13
Cisco NX-OS Release 7.0(0)N1(1) Resolved Caveats
Record Number
Resolved Caveat Headline
CSCtu31087
BGP update generation blocked because of large number of idle/active peers.
CSCud48710
Layer 2 multicast traffic can be lost up to 1 to 2 minutes upon unshut of the fabric
PO in an AA topology. This happens only under the following conditions:
•
AA topology.
•
The group is downgraded to V2 of a V3 receiver.
•
The FEX fabric port is shut on one side.
•
When the fabric port is unshut, Layer 2 multicast traffic loss may be seen
until the next join comes in.
CSCud72942
When all the FEXs are reloaded at the same time, Layer 2 multicast traffic may not
recover on one of the HIF ports.
CSCud73169
The policer stats are not enabled if police action is added after it is applied to the
interface configuration.
CSCuh36961
A QoS policy with qos-group 1 cannot be applied on a non-FCoE class.
CSCui77868
Add support for 10M speed on FEX interfaces.
CSCum48119
MTU option in SOL throws an error message when configured.
MIB Support
The Cisco Management Information Base (MIB) list includes Cisco proprietary MIBs and many other
Internet Engineering Task Force (IETF) standard MIBs. These standard MIBs are defined in Requests
for Comments (RFCs). To find specific MIB information, you must examine the Cisco proprietary MIB
structure and related IETF-standard MIBs supported by the Cisco Nexus 6000 Series switch.
The MIB Support List is available at the following FTP site:
ftp://ftp.cisco.com/pub/mibs/supportlists/nexus6000/Nexus6000MIBSupportList.html
Related Documentation
Documentation for the Cisco Nexus 6000 Series Switch is available at the following URL:
http://www.cisco.com/en/US/products/ps12806/tsd_products_support_series_home.html
The documentation set is divided into the following categories:
Release Notes
The release notes are available at the following URL:
http://www.cisco.com/en/US/products/ps12806/prod_release_notes_list.html
Installation and Upgrade Guides
The installation and upgrade guides are available at the following URL:
Cisco Nexus 6000 Series Release Notes, Release 7.x
31
Obtaining Documentation and Submitting a Service Request
http://www.cisco.com/en/US/products/ps12806/prod_installation_guides_list.html
Command References
The command references are available at the following URL:
http://www.cisco.com/en/US/products/ps12806/prod_command_reference_list.html
Technical References
The technical references are available at the following URL:
http://www.cisco.com/en/US/products/ps12806/prod_technical_reference_list.html
Configuration Guides
The configuration guides are available at the following URL:
http://www.cisco.com/en/US/products/ps12806/products_installation_and_configuration_guides_list.h
tml
Error and System Messages
The system message reference guide is available at the following URL:
http://www.cisco.com/en/US/products/ps12806/products_system_message_guides_list.html
Documentation Feedback
To provide technical feedback on this document, or to report an error or omission, please send your
comments to [email protected]. We appreciate your feedback.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a
service request, and gathering additional information, see What’s New in Cisco Product Documentation
at: http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html.
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Cisco Nexus 6000 Series Release Notes, Release 7.x
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