How to transition from IPX to pure IP Networking Services DEPLOYMENT GUIDE w w w. n o v e l l . c o m table of contents How to transition from IPX to pure IP 2 M O V I N G TO A P U R E I P ENVIRONMENT 2 WHY MOVE? 2 T H E PAT H T O P U R E I P 8 HOW NOVELL ADDRESSED IPXD E P E N D E N T S E RV I C E S 9 M A I N TA I N I N G I P X S E R V I C E S T E M P O R A R I LY I N A P U R E I P ENVIRONMENT 10 A D D I T I O N A L I N F O R M AT I O N How to transition from IPX to pure IP 2 Moving to a pure IP environmeNt With the release of Novell NetWare 5 (and above), you can now move to a pure IP ¨ ¨ environment, even if you are still using NetWare Core Protocols. ThatÕs because in NetWare 5 (and above), all NetWare Core Protocols can use the TCP/IP transport protocol giving you the ability to run in a pure IP environmentÑpure in the sense that it doesnÕt retain an IPX-based encapsulation (or, in the case of NT Server, a NetBIOS encapsulation). In some cases, you will need to continue to WHY MOVE? Why would you want to move to a pure IP maintain IPX services temporarily in your new pure environment? There are many possible IP environment. The section of this document, reasons, including: ÒMaintaining IPX Services Temporarily in a Pure IP ¥ To simplify your routing infrastructure by moving to a single protocol. Environment,Ó describes a practical solution. T H E PAT H T O P U R E I P ¥ To create a more uniform WAN and remote Once youÕve decided to make the transition connectivity options. to Pure IP you need to answer two questions: ¥ Your router vendor may charge more for support and upgrades of multiple protocols. ¥ To reduce the load on NetWare/NDS servers ¨ that currently support the IPX protocol and its Name Space Providers, Bindery and SAP. 1. What are your IPX dependencies? 2. How quickly do you need to make the transition? The answer to the first question is important The following section of this document, because your ultimate goal is to eliminate all IPX ÒThe Path To Pure IP,Ó describes a stepÐby-step dependencies. The answer to the second question procedure for moving to pure IP. Novell determines whether you must move your entire developed this procedure in migrating their network to pure IP all at once, or whether you large, global network to pure IP. (During the can make the transition in phases. transition, Novell migrated over 750 servers and You can move from an IPX environment more than 6,000 workstations.) In some of the (or a mixed IPX/IP environment) to a pure IP steps, NovellÕs approaches to some of the tasks environment by performing the 12 steps presented are pointed out to help you address certain issues. in this section. How to transition from IPX to pure IP 3 Step 1. Implement TCP/IP Routing, Security and Management Step 2. Implement DNS/DHCP DNS allows you to refer to network resources by To make the transition to pure IP, you must begin to route the protocol. But before you route your first IP packet, you should have a user-friendly DNS names rather than obscure IP addresses. With NetWare 5, you can access a server using its IP address or fully-qualified DNS name. TCP/IP security infrastructure (such as firewalls) Anyone who has had to manage IP addresses on in place. If you have already been using TCP/IP, a large scale is probably already familiar with the you may already have a security infrastructure HELPFUL D O C U M E N TAT I O N Migrating to Pure IP with NetWare 5: http://developer.novell.com /research/appnotes/1998/se ptembe/a3frame.htm IP address management simplification provided by Migrating from NetWare/IP DHCP. DHCP is especially useful with NetWare 5 to NetWare 5 and Pure IP: because it not only simplifies the assignment and http://developer.novell.com administration of client IP addresses, but also /research/appnotes/1999/fe allows you to distribute Novell Client configuration bruary/a6frame.htm in place. YouÕll also need tools to monitor the health of your TCP/IP network. If you have already been using TCP/IP, you may already have a monitoring infrastructure in place. You may also be able to use some of the tools you have for monitoring the health and performance of your IPX network to monitor your IP network. You may also need to tweak your network to accommodate the new TCP/UDP ports used by NetWare 5: TCP 524ÑNCP RequestsÑSource port will be a high port (1024-65535). information such as Preferred Tree, Preferred Server, SLP Directory Agent addresses, SLP Scope and Migration Agent addresses. DHCP also simplifies network usage. For example, you can use DHCP to give clients HELPFUL the name of the corporate tree, the name of a D O C U M E N TAT I O N local server holding replicas, any local Directory Protocols and ports used Agents and other information. That allows users by NetWare 5 IP: to login from any location without wrestling with http://support.novell.com/ IP settings or client configuration. cgi-bin/search/ UDP 524ÑNCP for time synchronizationÑ Source port will be a high port. searchtid.cgi?/ UDP 123ÑNTP for time synchronizationÑ Step 3. Design SLP Implementation 10013531.htm Source port will be the same. UDP 427ÑSLP RequestsÑSource port will be the same (427). TCP 427ÑSLP RequestsÑSource port will be the same (427). TCP 2302ÑCMDÑSource port will be a high port.* UDP 2645ÑCMDÑSource port will be the same (2645).* *These ports are only necessary if your organization is planning to use CMD as part of the IPX to IP Migration strategy. Running NetWare in a pure IP environment eliminates IPX SAP packets. IPX SAP provides two services: dynamic discovery and the ability to use short names. As a result, in a pure IP environment, youÕll have to deal with name resolution. In the IPX world, if you want to attach to a particular server, you donÕt need to know where that server is located, its IP address, its domain, or the NDS context in which the server resides. You simply refer to the server by its short name. How to transition from IPX to pure IP 4 HELPFUL D O C U M E N TAT I O N This is not the case in the world of Pure IP. 2. Partition the SLP Scope Units in the tree and For example, if you want to get to YahooÕs Web ensure that the servers designated to run the Novell DNS/DHCP Services: site, you canÕt simply type the word ÒyahooÓ into DA service hold replicas of all Scope Units Design Issues and your browser. Instead, you must type the Yahoo that they service. Troubleshooting: Web serverÕs fully qualified DNS name: http://developer.novell.com/ www.yahoo.com. research/appnotes/1998/ The opposite is also true, that is, you can november/a1frame.htm refer to a single server by any number of names. For example, in the IP world you can refer to the DNS resolves short names by taking the name and concatenating the current DNS sub-domain onto the end. For example, prv-botanica becomes prv-botanica.provo.novell.com. NDS resolves short names by taking the name Novell GUI Map utility that maps a drive to the and concatenating the current NDS context. server on your desk, in a number of ways: (For example, prv-botanica becomes USEFUL D O C U M E N TAT I O N SLP Deployment Guide: www.novell.com/ Use the fully qualified DNS name: \\serverut.provo.novell.com\sys Use the fully qualified NDS name: \\novell_inc\.serverut_sys.gta.prv.novell prv-botanica.gta.prv.novell.) The Windows NT client requests information from all of the Name Service Providers at once and uses the one that responds first. products/netware/ Use the IP address: \\xxx.xx.xxx.xxx\sys Step 4. Upgrade To NetWare 5 Using SLP to provide dynamic discovery in a In this step you will upgrade your servers and clients deployment_solutions Pure IP environment can go a long way toward to NetWare 5, and at the same time implement the easing the transition from IPX. With SLP, you can SLP design you developed in Step 3. refer to the server in the above example in the HELPFUL D O C U M E N TAT I O N An overview of SLP: http://support.novell.com/ cgi-bin/search/searchtid.cgi?/ 10014788.htm same way that you have been using with IPX, NetWare 4.11 to NetWare 5.1 UpdateÑto help that is, with the serverÕs short name: you upgrade from NetWare 4.11 to NetWare 5. \\serverut\sys SLP resolves short names by YouÕll find information on this course at: looking for an SLP object type of Òbindery.novellÓ http://novell.netpub.com/cgi-bin/edcatalog/ with that particular name. ilt_one_sresult?m=689 At this point, you should design your SLP implementation in preparation for deploying Dynamically Discovering Services on an IP Network with SLP: http://developer.novell.com/ Novell offers an Education courseÑCourse 529 Upgrade servers to NetWare 5 SLP in the following step (Step 4) as you upgrade You need to upgrade your servers to NetWare 5 your servers to NetWare 5. To design your SLP including the currently recommended service pack. implementation, you need to perform the following steps: NOTE: The first server you upgrade should be a replica of the root partition. The next servers research/appnotes/1999/ 1. Determine the number of Directory Agents you upgrade should be the servers you will use march/a2frame.htm (DAs) to host the scope(s). as the SLP DAs for the environment. You need How to transition from IPX to pure IP 5 HELPFUL How Novell implemented SLP D O C U M E N TAT I O N Novell implemented SLP on a per site basis. Novell decided on this approach because not rolling out an enterprise-wide SLP implementation would allow each site to migrate from IPX to IP independently of the other sites on the network. SLP Console and Set Commands: http://support.novell.com/ At smaller sites (less than 100 clients), Novell did not install a Directory Agent and simply allowed the individual systems to use multicasting to advertise their presence and look for services. At larger cgi-bin/search/searchtid.cgi?/ 10014868.htm sites, Novell installed two Directory Agents (for redundancy and load balancing), but that SLP information was replicated only locally. Using SLP locally allows it to provide dynamic discovery of local resources (the resources users are most likely to need). Novell then trained users to use fullyqualified DNS names to perform such actions as login and drive mapping. Novell standardized on fully-qualified DNS names, using DNS as the primary name resolver (followed by NDS, SLP, and then, if all else fails, local host files). ThatÕs because DNS is the only SLP, How to use it with DNS and DHCP: http://support.novell.com/ cgi-bin/search/searchtid.cgi?/ 10014570.htm naming standard that is independent of the userÕs location and the location of the desired network resource. Fully-qualified DNS names work everywhere. For example, DNS works regardless of whether the user is mapping a drive locally, across the Internet from a customer site, via a VPN client, or dialing in with RADIUS. TIDs: These documents can be found by searching at: http://support.novell.com/ search/kb_index.jsp to implement SLP on each of these servers NOTE: When upgrading your servers to after you upgrade that server to NetWare 5. NetWare 5, Novell recommends that you run To do so, perform the following steps: both IP and IPX during the transition to pure IP, TID 10025313— Frequently Asked Questions about SLP that is, run a dual stack. That enables your TID 10014396— 1. Load the SLP DA service. NetWare servers to communicate with both 2. Configure/tune the various server SLP SET parameters (Set the NCP PROTOCOL PREFERENCES = TCP IPX UDP. You must also put in the AUTOEXEC.NCF because it is not “SLP Terms and your IP-based clients and services, and your Configuration Reference” IPX-based clients and services during the TID 10014467— transition. The dual stack approach helps ensure a smooth migration from IPX to pure IP. “Configuring a LAN/WAN infrastructure persistent between server reboots). Upgrade Clients To NetWare 5 3. Configure the SLP.CFG on every NW 5.x server (define the 2 ÒclosestÓ DAs in the SLP.CFG, You need to upgrade your clients to NetWare 5. In addition, although it is not necessary to do so at REGISTER TYPE commands for regional vs. the time you upgrade your servers to NetWare 5, global scoping). you should perform the client-side configuration You can then upgrade all remaining servers to NetWare 5. for SLP. This may require you to reinstall the client if is not currently installed with IP support. for SLP” TID 10014466— “Configuring SLP for a NetWare Client” TID 10027163— “Configuring SLP for a NetWare Server” How to transition from IPX to pure IP 6 HELPFUL NOTE: When upgrading your NetWare Clients servers, itÕs easier to allow servers to continue to to NetWare 5, you may want to ensure that communicate via IPX until they can all communicate For information on they can run both IP and IPX if you need the via IP. ThatÕs why Novell recommends taking the Automatic Client Upgrade two protocols to coexist during the transition dual stack approach in Step 3. (ACU), search to pure IP. That ensures that your NetWare support.novell.com Clients can communicate with your IP-based typically eliminates most IPX dependencies, for “ACU” or look in the servers and services, and with your IPX-based you still need to look at all of the other network Novell Client documentation. servers and services during the transition. services you have to see what IPX dependencies D O C U M E N TAT I O N Although upgrading all servers to NetWare 5 they may have. Step 5. Set Up DNS Some applications make the transition Set Up DNS Entries for All NetWare 5 Servers to a Pure IP environment easier than others. For example, with Novell GroupWise , all you have ¨ You need to set up DNS entries for all NetWare 5 to do is set the clients to use client/server mode. servers. This will allow DNS to provide name Other applications, however, are not that easy. resolution when dealing with your new IP-based Although some services may not use IPX on servers. (Name resolution will be discussed in HELPFUL the client side, they may have IPX hooks in their more detail in Step 7.) management pieces. Some services may use IPX for D O C U M E N TAT I O N How Novell Deployed Convert Server Names in Login Scripts to Fully-qualified DNS Names DNS and DHCP in its Global Network: www.novell.com/ products/netware/ deployment_solutions Once you turn off IPX, referring to servers by their short name will no longer work. Therefore, it is important that you convert the server names in all login scripts to fully-qualified DNS names. Step 6. Identify IPX Dependencies and Transition Those Services To IP dynamic discovery to show a list of available servers in a dialogue box, or they may be able to communicate with the server via IP, but they may rely on SAP (Service Advertising Protocol) to actually discover the address of the server. You will also need to check for short name dependencies. Some applications may not be capable of referring to servers by their fully- Your largest source of IPX dependencies qualified DNS names, and depending on your will probably be NetWare, NDS and Printing setup, short name resolution may not work (queue-based printing is IPX-based) on your enterprise-wide. Step 6 will help you resolve NetWare 4.x servers. Depending on your tree this problem. design, NDS background processes may require For help in ferreting out the IPX dependencies that all the servers in your tree be able to in your network, you can use the NetWare IPXCON communicate with all the other servers in the tree. utility to see what SAPs are out on the wire. Rather than researching, diagramming and coordinating which servers must talk to which Two other useful tools are SAP List and SAP Snoop. You can find utilities that will help you detect How to transition from IPX to pure IP 7 SAPs at: http://www.netwarefiles.com/ and at Step 8. Change Timesync Time Sources to Use IP Addresses http://www.novellshareware.com/ Timesync doesnÕt currently resolve fully-qualified Step 7. Convert to Fully-qualified DNS DNS names. In this case you must specify an Names IP address. Convert Login Scripts to Use Fully-qualified DNS Names Step 9. Turn Off IPX SAP at the Routers In this step, you must convert login scripts to use This step does not shut down IPX entirely. It turns fully-qualified DNS names. For example, off only IPX SAP. You need to continue to route IPX Change the script line: RIP until you have upgraded every server in the map z:=s16:=\\prv-botanica\sys\public tree to NetWare 5. to: NOTE: Before performing Step 9, you should map z:=s16:=\\prv-botanica.provo.novell.com\ make sure that there are no other services sys\public using SAP. Train Users to Use Fully-qualified DNS Names Remember, SAP packets and IPX packets are You must train users to use fully-qualified DNS not equivalent. SAP is merely the aspect of the names in performing such operations as login and protocol that provides service advertisement. drive mapping. It is analogous to a telephone directory in that it HOW NOVELL TRAINED USERS You need to give users a way to determine the fully- H O W N O V E L L A D D R E S S E D I P X - D E P E N D E N T S E RV I C E S qualified DNS names of servers. Novell did this The table below shows some of the services that Novell had to migrate in moving the Novell network by creating a simple but infrastructure to pure IP. The table also shows the solutions on which the company standardized at effective CGI script that the time of transition. allows a user to type in the Service Product Anti-Virus McAfee NetShield 4.0.x Backup BackupExec 8.0 (Build 251) In response, the script Caching/Proxy Novell BorderManager 3.0 returns the fully-qualified DNA/DHCP Novell DNS/DHCP 3.0 E-Mail/Messaging GroupWise 5.5 short name of any server. ¨ FTP NetWare NFS 2.4 Network Management ManageWise 2.6, HP OpenView 5.01 NFS NetWare NFS 2.4 Printing NDPS Remote Access (RADIUS) Novell BorderManager 3.0 Web Server Netscape Enterprise/Fastrack Server for NetWare DNS name for that server. How to transition from IPX to pure IP 8 simply maps server names into server addresses. Step 12. Turn Off IPX At The Servers IPX RIP, on the other hand, is used to transfer Finally, turn off IPX on every server. information from point A to point B. To ensure the network remains operational, NOTE: Do not perform this step until you have upgraded every server in the tree to NetWare 5. turn off SAP using the following procedure: Congratulations, you have just made the ¥ Turn off SAP at the routers. transition to pure IP. ¥ Wait for 5-10 minutes. ¥ At the server console, enter RESET ROUTER a few times. M A I N TA I N I N G I P X S E R V I C E S T E M P O R A R I LY I N A P U R E I P ENVIRONMENT ¥ Wait a few more minutes. In some cases, you will have to maintain IPX ¥ At the server console, enter DISPLAY SERVERS. You should see only a list of IPX servers from the local site. ¥ At the server console, enter DISPLAY NETWORKS. You should see the full list of services temporarily in your new pure IP environment. That could be due to a variety of reasons. For example, you may not be able to migrate all your servers to NetWare 5 in the time allotted for transition to pure IP, yet you still need IPX networks on both sides of the router, to be able to access those resources from areas not just the IPX networks from the local site. that are pure IP. In these cases, you must allow This step provides a good test for IPX dependencies. Once youÕve turned off SAP at the routers, you may find that some applications that you assumed didnÕt have IPX dependencies actually do have IPX dependencies. your IPX-dependent services to continue to function in a world where IPX no longer exists, until you can move them to IP. NetWare 5 provides a solutionÑthe NetWare 5 Migration AgentÑa NetWare 5 server running Compatibility Mode Drivers (CMD) with the Migration Step 10. Check NDS Synchronization Agent option enabled. The Migration Agent lives Go into DSRepair and force a synchronization to in the IPX world and acts as the intermediary make sure that NDS is synchronizing properly between the IP and IPX worlds. It allows IP-only without SAP. clients and servers to communicate with their IPX-based counterparts, and vice-versa. Step 11. Verify Client Logins To take advantage of the NetWare 5 Migration At this point, you should make sure that users Agent, you must be running IPX Compatibility can still login to the network. Make sure that Mode Drivers (IP/CMD) on all clients and servers both container and personal login scripts are that reside in the IP-only world. If applications working properly. on these IP-only devices make an IPX call or How to transition from IPX to pure IP 9 communicate with IPX devices, the CMD drivers The Migration Agent also translates between USEFUL intercept the IPX call, encapsulate it in an IP IPX SAPs and SLP. It takes IPX SAPs and registers D O C U M E N TAT I O N packet and route it to the Migration Agent. these advertised services with the Directory Configuration Parameters The Migration Agent accepts that request and Agents so that they are available via SLP to for the Compatibility makes the IPX call on behalf of the IP-only IP-only devices. 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