User guide

A-28 Cisco 2500 Series Access Server User Guide
Desktop Protocols
Because Router D and Router C share a data link, they must agree on the IP network and
the subnet used on that data link, but they must have unique node numbers. The serial link
used by Router D is distinct from the serial link used by Router C, so it uses a unique subnet
number.
The IP configuration of Router D in Figure A-11 is as follows:
interface ethernet 0
ip address 172.16.40.2 255.255.255.0
!
interface serial 0
ip address 172.16.2.1 255.255.255.0
!
router igrp 1
network 172.16.0.0
!
ip name-server 172.16.10.100
Note IP hosts are usually configured with the IP address of the access server (or other IP
router) set as a default gateway. For additional information, see the publication
Internetwork Design Guide.
IPX Protocol
Internetwork Packet Exchange (IPX) is the Layer 3 protocol developed by Novell to deliver
packets within a Novell internetwork.
The configuration command ipx routing is used to enable IPX routing on the Cisco IOS
software.
IPX Network Numbering
IPX uses 32-bit network numbers to uniquely identify each data link in an IPX
internetwork. An example Novell network numbering plan is shown in Figure A-12.