Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Chapter 3 Troubleshooting Forwarding
Troubleshooting Adjacency Information
7. show adjacency ipv4 nexthop ipv4-address detail hardware location node-id
8. show adjacency interface-type interface-instance detail hardware location node-id
9. show adjacency trace location node-id
10. show adjacency trace client aib-client location node-id
11. show adjacency hardware trace location node-id
12. Contact Cisco Technical Support if the problem is not resolved
DETAILED STEPS
Command or Action Purpose
Step 1
show arp location node-id
Example:
RP/0/RP0/CPU0:router# show arp location
0/12/cpu0
Displays the Address Resolution Protocol (ARP) for an
egress line card with a broadcast interface.
Ensure that you can find the IP address and that correct
MAC address of the neighbor is learned.
Step 2
show arp traffic location node-id
Example:
RP/0/RP0/CPU0:router# show arp traffic location
0/12/cpu0
Displays ARP traffic statistics for an egress line card with a
broadcast interface.
Check for any errors or IP packet drops.
Step 3
show adjacency interface-type
interface-instance
remote detail location
node-id
Example:
RP/0/RP0/CPU0:router# show adjacency pos
0/13/0/2 remote detail location 0/14/cpu0
Displays detailed CEF adjacency table information for a
remote ingress line card.
Ensure that the output shows IPv4 adjacency information
and that an adjacency exists.
Step 4
show adjacency interface-type
interface-instance
remote detail hardware
location
node-id
Example:
RP/0/RP0/CPU0:router# show adjacency pos
0/13/0/2 remote detail hardware location
0/14/cpu0
Displays adjacency information for a remote ingress line
card.
• Check that the prefix and mask are valid.
• Check that the table look-up (TLU) pointers match the
TLU pointers in the show cef ipv4 prefix mask
hardware ingress detail location node-id command.
For example:
Step 5
show adjacency ipv4 nexthop ipv4-address detail
location
node-id
Example:
RP/0/RP0/CPU0:router# show adjacency ipv4
nexthop 192.168.2.0 detail location 0/12/cpu0
Displays adjacencies on an egress line card with a broadcast
interface that are destined to the specified IPv4 next hop.
When an egress interface is broadcast, use the show
adjacency ipv4 nexthop command to display the adjacency
information.
Compare the mac layer rewrite information that shows the
destination L2 address in the first part followed by the
source L2 address, and the Ethernet value with the output
from the show arp location node-id command.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English