System information

Troubleshooting Novell IPX 8-161
IPX Enhanced IGRP: SAP Updates Not Propagated by Router
IPX Enhanced IGRP: SAP Updates Not Propagated by Router
Symptom: Novell SAP packets are not forwarded through a router running IPX Enhanced IGRP.
Clients might be unable to connect to servers over one or more routers, or they might connect only
intermittently.
Note Procedures for troubleshooting IPX Enhanced IGRP problems not specific to SAPs are
described in the section “IPX Enhanced IGRP: No Connectivity over IPX Enhanced IGRP Router”
earlier in this chapter.
Table 8-10 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table 8-10 IPX Enhanced IGRP: SAP Updates Not Propagated by Router
Possible Problem Solution
Misconfigured SAP filters
Step 1 Use the show access-lists privileged exec command on suspect routers to
see whether there are Novell IPX access lists configured. Use the show
running-config privileged exec command to see whether there are SAP
filters that use any of the configured access lists. At the end of this chapter
is a list of Novell SAPs that includes the SAP description and hex and
decimal values.
Step 2 If SAP filters are configured, disable them by removing the
ipx input-sap-filter and ipx output-sap-filter interface configuration
commands as appropriate (using the no version of the command).
Step 3 Use the debug ipx sap activity privileged exec command to see whether
SAP traffic is being forwarded normally. The debug command output
shows the server name, network number, and MAC address of SAP
packets.
Caution: Because debugging output is assigned high priority in the CPU
process, it can render the system unusable. For this reason, use debug
commands only to troubleshoot specific problems or during
troubleshooting sessions with Cisco technical support staff. Moreover, it
is best to use debug commands during periods of lower network traffic
and fewer users. Debugging during these periods decreases the likelihood
that increased debug command processing overhead will affect system
use.
Step 4 If SAP information is being forwarded properly by the router, a SAP filter
is causing SAP updates to be dropped by the router.
Step 5 To isolate the problem SAP filter, reenable filters one at a time until SAP
packets are no longer forwarded by the router.
Step 6 Change the referenced access list to allow the SAP traffic you want to be
forwarded to pass through the router. Make sure all necessary ports are
configured with an explicit permit statement.
Step 7 Continue enabling filters one at a time and checking to see that SAP
traffic is being forwarded properly until you have verified that all filters
are configured properly.