Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

1-7
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Chapter 1 General Troubleshooting
Basic Cisco IOS XR Verification and Troubleshooting Tools
172.23.105.135 03:15:34 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
161.44.192.216 02:19:31 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
172.22.45.18 01:00:50 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
172.22.45.17 01:09:39 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
172.23.93.112 00:22:35 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
172.22.58.32 00:22:32 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
172.27.90.107 02:58:54 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
172.28.54.111 02:45:53 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
171.71.180.204 02:12:47 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
171.71.180.203 02:12:55 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
171.71.180.216 02:12:48 0030.f2f2.1038 Dynamic ARPA MgmtEth0/RP1/CPU0/0
Use the output from the show arp MgmtEth 0/rp1/cpu0/0 command to verify that there are dynamic
ARP addresses in the table and that ARP is functioning over the interface. The output shows that ARP
is functioning over the management Ethernet interface 0/RP1/CPU0.
The ping command checks to see if the neighbor is reachable.
RP/0/RP0/CPU0:router# ping 172.16.0.1 count 10 source mgmteth0/rp0/cpu0/0
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 172.16.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (10/10), round-trip min/avg/max = 1/2/4 ms
Basic Cisco IOS XR Verification and Troubleshooting Tools
The following commands are used to collect information to aid in verifying the system and
troubleshooting problems:
• man Command, page 1-7
• describe Command, page 1-9
• show platform Command, page 1-10
• top Command, page 1-10
• show context Command, page 1-11
• show users Command, page 1-13
man Command
The man command provides online help for standard Cisco IOS XR command-line interface (CLI)
commands using manual (man) pages. The command is used to display the manual pages for a specific
command on the basis of the command name, a feature, or a keyword. Each man page contains the
command name, syntax, command mode, usage, examples, and related commands.
Note The Cisco IOS XR Documentation Package - Man pages for Cisco IOS XR CLI commands must be
loaded in order to run the man command.
The following example shows the output from the man command show users command.
RP/0/RP0/CPU0:router# man command show users
COMMAND
show users

Cisco CRS-1 - Carrier Routing System Router Specifications

General

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