User manual

5.4.4 ATM Loopback

In order to isolate ATM interface problems, you can use ATM OAM loopback

cells to verify connectivity between VP/VC endpoints, as well as segment

endpoints within the VP/VC. This screen allows you to use ATM ping to test the

reachability of a segment endpoint or a connection endpoint.

Parameter

Description

Select PVC

Select the PVC channel you want to do the loop-back

diagnostic.

Flow Type

The ATM OAM flow type. The selection can be F5 Segment or

F5 End-to-End. ATM uses F4 and F5 cell flows:

• F4: used in VPs

• F5: used in VCs

Loopback

Location ID

The loop-back location ID field of the loop-back cell. The

default value is all 1s (ones) to indicate the endpoint of the

segment or connection.

Click “Go!” to save the setting to the configuration.