How To Monitor, Measure And Shape Network Traffic Dr. Sak Segkhonthod Director Government Information Technology Services (GITS) Agenda Directions in Network Architectures Traffic Management QoS Practice in Traffic Management Example: MOST’ Network 2 Changes in Network Architectures Distintions between LAN and WAN Metro LAN Broadband Access ADSL WIMAX Application Diversity Multimedia Peer to Peer 3 The New Network Architecture Transport Business Subscriber IP IP IP Metro IP Carrier Ethernet Nationwide/Global Carrier Ethernet Metro Carrier Ethernet IP IP IP IP Residential Subscriber Service Provider IP • Hard QoS and Traffic Engineering • Better bandwidth utilization/Scalability • Protection Switching (50ms) • OAM functions and TDM Support • Any-to-Any VPN services • Multicast support with Hard QoS 4 Metro Carrier Ethernet IP IP IP • Carries all applications • Internet Access • IP VPN service Supporting Transport for IP Network E-LAN connections among routers Any logical IP topology, multiple EVC’s of a single physical interface IP IP It supports all business IP services, from IP VPN to Internet access R IP R Metro IP R Carrier Ethernet R Nationwide/Global Carrier Ethernet Metro Carrier Ethernet IP R Carrier RIP R IP IP R R IP IP Network Using Carrier Ethernet as the Transport Layer Metro Carrier Ethernet R IP 5 R IP R IP Supporting TV Distribution Service 1. Multicast tree(s) is(are) established with QoS guaranteed 2. Subscribers (the Set-Top-Box) sends request for a channel 3. Carrier Ethernet filters, only replicates and forwards the requested channel to the subscribers 4. Video source protection and network protection are set up automatically upon requirement Subscribers IP IP DSLAM Video Source IP Video Source L2 DSLAM IP Metro Carrier Ethernet Nationwide/Global Carrier Ethernet Metro Carrier Ethernet IP DSLAM IP L2 DSLAM Metro Carrier Ethernet IP 6 IP DSLAM IP L2 DSLAM IP DSLAM Supporting VoD Service 1. An E-LAN connection is established between DSLAMs and VoD servers 2. Subscribers (the Set-Top-Box) sends request to RSM for a movie 3. RSM finds/informs the best VoD server, acknowledge subscribers of such 4. The subscriber establishes RTP and RSTP session with VoD and Command server respectively Subscribers IP IP DSLAM IP IP E-LAN IP Resource & Subscriber Manager (RSM) Metro IP Carrier Ethernet IP DSLAM VoD server L2 DSLAM Nationwide/Global Carrier Ethernet Metro IP Ethernet Carrier Command Server IP L2 DSLAM IP Metro Carrier Ethernet IP 7 IP DSLAM IP L2 DSLAM IP DSLAM Supporting VoIP Service 1. An E-LAN connection is established between WAN routers to build an IP WAN 2. An E-LAN connection is established between the DSLAMs and the IP PoP in each metro 3. Caller contacts the SIP Proxy server in order to find the IP address of the called party 4. Caller establishes RTP session with the called party through E-LAN connection Location Server IP WAN IP SIP Proxy Server Subscribers IP L2 DSLAM L2 DSLAM IP Metro IP Carrier Ethernet bal Nationwide/Glo E-LAN Carrier Ethernet Metro IP Ethernet Carrier IP DSLAM L2 DSLAM L2 DSLAM IP Metro Carrier Ethernet IP 8 IP DSLAM IP L2 DSLAM Carrier Ethernet for 3G/UMTS Backhaul Guaranteed QoS 3G SGSN IP Flexible SLA portfolios for different users and services IP Flexible bandwidth growth without network upgrade Efficient network for multimedia applications (P2P, P2MP, MP2MP) IP 3G SGSN Carrier Ethernet IP 3G SGSN Secure connectivity for corporate and consumer users Seamless integration with the wireline transport network – both Ethernet and TDM 9 IP 3G SGSN Carrier Ethernet – New Universal Transport Infrastructure to Deliver Ultimate Broadband HD TV TVoD, VoD Video Source Gaming Business Backup, ERP Voice/Video Telephony Voice gateway Video Source E-Line and E-LAN service Business Broadband Carrier Ethernet Internet Mobile 3G Broadband mobile data/video 10 Residential Triple-Play FTTx and DSLAM Backhaul Traffic Management Illustration Incoming Traffic Measure by Classification (Coloring by Apps) Policing and Remarking (Tired ingress Control) Data Video Voice Discard or re-marked as Best Effort Best Effort Priority mapped into a tag in packet header Low Priority 11 Mid Priority To Network High Priority Network Traffic & QoS Why do we need QoS? Traffic issues What is QoS? 12 Why do we need QoS? File Transfer Voice Email Video 13 Traffic Issues Importance vs. Delay Video Conference Online Games ERP / CRM Internet Radio Corporate Web Surfing 14 File Transfer Email Traffic Issues The Bandwidth Bottleneck LAN 100Mb/s -> 1Gb/s WAN 64Kb/s -> 2Mb/s 1. Real Time Trading Application (Banking, Finance & Securities) 2. SAP, Oracle (Corporate & Enterprise Business, Manufacturing) 3. Lotus Notes (Government, Media, Education) 15 Traffic Issues Business vs. Pleasure 16 What is QoS? 17 Concept - Pipes and Virtual Channels What is a Pipe? What is a VC? Pipe vs VC – when to use a pipe and when to use a VC Branches (PIPE) No branches – user/department monitoring (VCs) 18 Connection Limitations Conditional Admission T1 Connection Total guaranteed throughput = 1.5Mbps PIPE VC VC PIPE VC 1 VC 2 VC 3 19 VC Maximum = 150Kbps, Minimum per Connection = 45Kbps Quality of Service Options Minimum Maximum Maximum no. of connections Priority Per Pipe Min/Max, Priority, max no. connections Per VC Min/max, priority, max no. connections Per connection CBR + delay Gurantee + burst Direction Specific Inbound Outbound 20 QoS Per Connection Conditional Admission 10 Voice connections D[ ACCEPT 21 11th Voice Connection REJECT or DROP Minimum, Maximum and Priority V o ic e o v e r IP UDP Protocol Min, Max and Priority for each connection Each connection within the VC will get at least the minimum, no more than the maximum and the priority requested 22 QOS per connection (Burst) Burst B a n d w i d t h Traffic over the Max Maximum Unused Bandwidth 1.0 Traffic Output with Max Only 23 2.0 3.0 Time (S) Traffic Output with Max and Burst Access Control 24 The Complete Policy 25 Traffic Filtering 26 Detailed Charts A series of charts for the selected Pipe or VC Daily Weekly Monthly Yearly 27 Long-Term Monitoring 28 Advanced Monitoring & Diagnostic Transaction Flow Client / Server Address Pair Idle Time VC Pipe Port status Port Number 29 Protocol/ Applications Services Advanced Monitoring & Diagnostic Performance Throughput Throughput Volume Total Bandwidth (Internal) Total Bandwidth (External) 30 31 Ministry and Department Intranet R&D VPN VDO Conference VPN GFMIS VPN 32 Ministry Intranet MOC/DOC VPN 33 Traffic Management For MOST’s Network High-speed Connection for Domestic Traffic International Bandwidt Management Traffic Shaping Minimum Guarunteed and Burst Allowed Usage Policy Monitoring QoS Usage Security Control Virus Spams 34 35 Thank You Questions [email protected]
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