Cisco Systems OL-7396-01 Manual De Usuario

You can use either an ATM address prefix or an IP address as a ping destination. You can ping a neighbor 
switch by selecting the segment loopback option. In privileged EXEC mode, you can select various other 
parameters such as repeat count and timeout values.

The following example shows the ping command used in normal mode to check a VCC with a segment 
loopback flow:

Switch# ping atm interface atm 3/0/0 50 100 seg-loopback

Type escape sequence to abort.

Sending Seg-Loopback 5, 53-byte OAM Echoes to a neighbor, timeout is 5 seconds:

.....

Success rate is 0 percent (0/5)

The following example shows the ping command used in extended mode to check a VCC with 
end-to-end loopback flow:

Switch# ping

Protocol [ip]: atm

Interface [card/sub-card/port]: 3/0/0

VPI [0]: 0

VCI [0]: 16

Send OAM-Segment-Loopback ? [no]: 

Target IP address:

Target NSAP Prefix:

Repeat count [5]:

Timeout in seconds [5]:

Type escape sequence to abort.

Sending end-Loopback 5, 53-byte OAM Echoes to a connection end point, timeout is

 5 seconds:

.....

Success rate is 0 percent (0/5)

If you do not enable the OAM segment loopback option, the ping command uses an OAM end-to-end 
loopback cell. If you do not provide a target address, the connection end point becomes the target.

To display the OAM configuration, use the following EXEC command: 

ping atm interface atm card/subcard/port vpi 
[vci] {[atm-prefix prefix] | end-loopback 
[destination] | ip-address ip-address | 
seg-loopback [destination]}

Checks the connection.

Displays the OAM configuration.