6.5 Configuring EIGRP
6.5.4 Configuring EIGRP for IPX networks
To enable EIGRP for IPX, perform the following steps:
  1. Enable IPX routing.

    router(config)#
    ipx routing

  2. Define EIGRP as the IPX routing protocol.

    router(config-router)#
    ipx router {eigrp autonomous-system-number | rip}

    If IPX EIGRP is selected, an autonomous system number must be specified. This number must be the same for all IPX EIGRP routers in the network. Figure -

  3. Indicate which networks are part of the EIGRP autonomous system.

    router(config-
    ipx-router)# network network-number

  4. (Optional) If IPX RIP is also operating on the router, remove RIP from the networks using EIGRP by going to the router rip configuration entry and doing the following:

    router(config-
    ipx-router)# no network network-number

By default, Cisco routers redistribute IPX RIP routes into IPX EIGRP, and vice versa. When routes are redistributed, a RIP route to a destination with a hop count of 1 is always preferred over an EIGRP route with a hop count of 1. This ensures that the router always believes a Novell IPX server over a Cisco router for internal IPX networks. (The only exception to this rule is if both the RIP and EIGRP updates were received from the same router. In this case, the EIGRP route always is preferred over the RIP route when the hop counts are the same.)

Controlling IPX RIP
IPX RIP runs by default when IPX routing is enabled. If a legacy Novell server is using IPX RIP, a router's LAN interface must also run IPX RIP to exchange routing information with the server. Because the IPX RIP routes are redistributed into EIGRP, the router does not need to run IPX RIP on a serial link to another Cisco router. IPX EIGRP should be used instead. An administrator can disable IPX RIP on a network-by-network basis using the no network command, as shown in step 4, above.

EIGRP offers other advantages over IPX WAN links, including controlling of SAP updates, which is discussed in the following section.