checklinks Command

Checks which links are down. Issued on the CMC.

Syntax

checklinks [-c][-e]

Description

This switch-specific command verifies that links are up for active line cards and fabric cards. Output is either a simple return of OK, or a comprehensive list of ports and respective switch chips on the component that are down.

Options

The following table describes the options to the checklinks command and their purposes:

Example

The following example shows how to check which links are down with the checklinks command.

# checklinks -c
LC 0 Active, checking links.....OK
LC 1 Active, checking links.....OK
LC 2 Active, checking links.....OK
LC 3 Active, checking links.....
Port 16 on I4 01 LC 3 is down         (Cable 3 A ) 
Port 17 on I4 01 LC 3 is down         (Cable 3 A ) 
Port 18 on I4 01 LC 3 is down         (Cable 3 A ) 
Port 22 on I4 03 LC 3 is down         (Cable 6 A ) 
Port 23 on I4 03 LC 3 is down         (Cable 6 A ) 
Port 24 on I4 03 LC 3 is down         (Cable 6 A ) 
.
.
.
#

In the example, switch chips 1 and 3 on line card 3 have downed links. These links route to cables at connector 3A and 6A on line card 3.

Related Information

• setlinkspeed Command