Cisco Systems OL-7822-06 quick start Troubleshooting the link interface subsystem

Chapter 8 Troubleshoot Startup Problems

CLI Commands for Troubleshooting

–show interface Mng — Displays IP address and auto-negotiation information for the management interfaces. Following is a sample output from the show interface Mng command.

Following isa sample output from the show interface Mng command.

ip address: 10.1.6.145

subnet mask: 255.255.0.0

Configured speed: auto, configured duplex: auto

AutoNegotiation is On, link is Up, actual speed: 100, actual duplex: half

–show ip default-gateway— Displays the IP address of the configured default gateway. Following is a sample output from the show ip default-gatewaycommand.

Default gateway: 10.1.1.1

–show ip route — Displays the entire routing table and the destination of last resort (default-gateway).

Following is a sample output from the show ip route command.

gateway of last resort is 10.1.1.1

–show access-lists— Shows all access-lists or a specific access list.

Following is a sample output from the show access-listscommand.

Standard IP access list 1

Permit 10.1.1.0, wildcard bits 0.0.0.255 deny any

–show telnet — Displays the status of the telnet server daemon ( status) or any active Telnet sessions ( sessions).

Following is a sample output from the show telnet command.

show telnet sessions

There is 1 active telnet session: Index Source

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0 10.1.1.201 show telnet status Telnet deamon is enabled.

–show line vty timeout — Shows the timeout configured for Telnet sessions.

Following is a sample output from the show line vty timeout command.

Timeout is 30 minutes

•Troubleshooting the link interface subsystem:

–show interface GigabitEthernet 0/# — Displays information for a specific GBE Interface.

Following is a sample output from the show interface command.

ip address: 10.1.6.145

subnet mask: 255.255.0.0

Configured duplex: auto

AutoNegotiation is On, link is Up, actual duplex: half

–show interface GigabitEthernet 0/# counters — Displays the values of counters of a GBE interface.

	Following is a sample output from the show interfacecounterscommand.
	In total octets: 191520
	In good unicast packets: 560
	In good multicast packets: 0
	In good broadcast packets: 0
	In packets discarded: 0
	In packets with CRC/Alignment error: 0
	In undersized packets: 0
	In oversized packets: 0
	Out total octets: 0
	Cisco Service Control Engine 1000 2xGBE Quick Start Guide
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