Troubleshooting guide

11-41
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 11 Troubleshooting Layer 3 Network Connections
Troubleshooting IPX Layer 3 Routing
• 101B is the Entry CAM location confirmed (this is confirmed using the show epc patricia interface
command with the ipx and detail parameters).
• encap (encapsulation) number is correct.
Step 3 This interface CAM information should match the information shown in Step 1 of the “Checking the IPX
Routing Table” section on page 11-39.
Step 4 Use the show ipx cef command with the source network number (8541), netmask, and interface
parameters to display the status of the CAM table on the egress interface.
C8540CSR-1# show epc ipx-prefix 8541 00 GigabitEthernet 11/0/1
IPX Prefix Entries in CAM, Interface GigabitEthernet11/0/1
-----------------------------------------------------------------
Codes: C - Connected network, R - Remote network
V - valid entry, N - Network entry
L - load balancing enabled, D - default network
E - EIGRP enabled, I - Internal network
B - BVI network, M - My Mac Address
VC - VCI
GigabitEthernet11/0/1 net 8541 cptr 1012 nhop1 1014 nhop2 1013 encap1 34 encap2 0 flags B
Step 5 Confirm the same parameters as in Step 3.
Step 6 From the Catalyst 8540-1, use the show epc ipx-node command with the IPX network and node
addresses to display the status of the IPX network to node mapping.
C8540CSR-1# show epc ipx-node 8510.0090.21cc.cccc
Codes: V - valid entry, M - My-node, I - IF/VC flag
Interface Network Node IF Number Flags
GigabitEthernet11/0/1 network 8510, cptr 101B, node 0090.21cc.cccc flag 275
Step 7 From the Catalyst 8540-1, use the show epc ifmapping command to display the IF number mapped to
the egress interface GigabitEthernet 11/0/1.
C8540CSR-1# show epc ifmapping
.
(Information Deleted)
.
GigabitEthernet11/0/1 (IF number: 39)
The IF number field (in this example “39”) is used in Step 9.
Step 8 From the Catalyst 8540-1, use the show epc patricia interface command with the ipx detail parameters
on the egress interface to display the status of the Host Entry CAM location for the connection to Host B.
C8540CSR-1# show epc patricia interface gigabitEthernet 11/0/1 ipx detail
0# CAM location: 0x0FF7 ROOT
2# Prefix Entry CAM location: 0x1018 Dirty
Prefix 0x8510 CONNECTED NTP 0x101A NTP 0x1019 Valid
1. Node Entry CAM location: 0x101A Dirty
0090.21bb.bbbb interface 39 My-Node Valid
2. Node Entry CAM location: 0x101B Dirty
0010.21aa.aaaa interface 39 Valid
3# Prefix Entry CAM location: 0x101D Dirty
Prefix 0x8512 REMOTE NHOP1 0x101B NOVELL_ETHER Valid
4# Prefix Entry CAM location: 0x101C Dirty
Prefix 0x8511 REMOTE NHOP1 0x101B NOVELL_ETHER Valid
IPX Patricia Tree Summary:
Number of IPX prefix entries: 5
Number of Host Entries: 4