Information Technology Reference
In-Depth Information
Table 8-9 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table8-9
IPX Enhanced IGRP: Routers Not Establishing Neighbors
Possible Problem
Solution
Routers are in
different
autonomous
systems.
Neighbor relationships will not be established between
routers in different autonomous systems. Make sure that the
routers that you want to be neighbors are in the same
autonomous system.
1.
Use the
show running-config
privileged exec command to
view the router configuration. Check the
ipx router eigrp
command entries to see which autonomous systems the
router belongs to.
2.
Hello or hold-time
timer mismatch
has occurred.
1.
Use the
show running-config
privileged exec command on
each router in the network. Look for
ipx hello-interval
eigrp
and
ipx hold-time eigrp
interface configuration
command entries.
The values configured by these commands should be the same for
all IPX routers in the network.
2.
If any router has a conflicting hello interval or hold-time
value, reconfigure it to conform to the rest of the routers on
the network.
You can return these values to their defaults with the
no ipx
hello-interval eigrp
and
no ipx hold-time interval eigrp
interface configuration commands.
Link problem has
occurred.
1.
Use the
show interfaces
privileged exec command to check
whether the interface is up and functioning correctly.
The following is sample output from the
show interfaces
command:
Router#
show interface fastethernet1/0
FastEthernet1/0 is up, line protocol is up
Hardware is cyBus FastEthernet Interface, address
is 0010.5498.d020 (bia 0010.
5498.d020)
Internet address is 210.84.3.33/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely
230/255, load 1/255
Encapsulation ARPA, loopback not set, keepalive
set (10 sec), hdx, 100BaseTX/FX
Use the
show ipx eigrp
neighbors privileged exec command
to make sure that all Enhanced IGRP neighbors are shown in
the neighbor table.
2.
If not all neighbors are in the neighbor table, there might be
a link problem. Refer to other chapters in this topic for
information on troubleshooting specific link types.
3.
