Troubleshooting guide

11-38
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 11 Troubleshooting Layer 3 Network Connections
Troubleshooting IPX Layer 3 Routing
Troubleshooting IPX Layer 3 Routing
Similar to troubleshooting IP Layer 3 routing connections, the key to troubleshooting IPX Layer 3
routing is to check on consistency between information contained in the route processor and what is in
the CAM tables on the ports.
Troubleshooting an IPX Layer 3 connection is separated into the following processes:
• Checking the IPX Routing Table, page 11-39
• Checking the IPX CEF Adjacencies, page 11-40
Figure 11-20 shows the example network used to troubleshoot an IPX Layer 3 connection in the
subsequent examples.
Figure 11-20 IPX Layer 3 Connection
In Figure 11-20, Host A is the source end station trying to communicate with the Novell Server that is
part of IPX network 8511, the destination end station.
IPX troubleshooting is similar to IP troubleshooting. The key is to check the consistency between the
route processor table information and CAM tables on the ports.
IPX Layer 3 Connection Troubleshooting Commands
To troubleshoot IPX Layer 3 connection problems, use the following commands:
Host A Catalyst 8540-2
Catalyst 8540-1
Server
8514
(Ether-802.2)
8510
(Ether-802.3)
8512
(Ether-802.3)
MAC:
00:10.e3:aa...
MAC:
00:90.21:bb...
MAC:
00:90.21:dd...
MAC:
00:90.21:ff...
Network: 8511
MAC:
00:90.21:cc...
MAC:
00:90.21:ee...
50251
Giga 10/0/0 Giga 11/0/1
Command Purpose
show ipx route Displays the IPX routing table.
show ipx servers Displays SAP server status information.
Note Use this command only if you have a
server or SAP reachability problem.
show epc ipx-prefix {prefix-number} {netmask}
{fastethernet | gigabitethernet} slot/subslot/port
Displays IPX prefix entries for the specified
network, node, and interface.
show epc ipx-node {network-number.node} cam
{cam-address}
Displays IPX node entry in interface CAM.
show epc ifmapping Displays interface mapping to CAM interface
number.