Information Technology Reference
In-Depth Information
Table8-6
IPX RIP: No Connectivity over IPX RIP Router (continued)
Possible Problem
Solution
Misconfigured
network filters
1. Use the show access-lists privileged exec command on
suspect routers to see whether there are Novell IPX access
lists configured.
2. Use the show running-config privileged exec command to
view the router configuration. You can see whether access
lists are specified in an ipx input-network-filter or ipx
output-network-filter interface configuration command.
Examples:
In the following example, access list 876 controls which
networks are added to the routing table when IPX routing
updates are received on Ethernet interface 1:
access-list 876 permit 1b
interface ethernet 1
ipx input-network-filter 876
Routing updates for network 1b will be accepted. Routing
updates for all other networks are implicitly denied and are not
added to the routing table.
The following example is a variation of the preceding that
explicitly denies network 1a and explicitly allows updates for all
other networks:
access-list 876 deny 1a
access-list 876 permit -1
If access lists are used by one of these commands, disable
the filters using the no ipx input - network-filter or no ipx
output-network-filter commands.
3.
Check whether the client can access the server normally. If
the connection is successful, one or more access list needs
modification.
4.
To isolate the problem access list, apply one IPX filter at a
time until you can no longer create connections.
5.
When the problem access list is isolated, examine each
access-list statement to see whether it blocks traffic from
desired networks. If it does, configure explicit permit
statements for networks that you want to be advertised
normally in updates.
6.
After altering the access list, re-enable the filter to make sure
that connections between the client and the server still work.
Continue testing access lists until all your filters are enabled
and the client can still connect to the server.
7.
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