User Manual

User’s Guide Configuring your Computers
204
ATM Loopback
In order to isolate the 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.
ATM uses F4 and F5 cell flows as follows:
−F4: used in VPs
−F5: used in VCs
An ATM connection consists of a group of points. This OAM
implementation provides management for the following points:
−Connection endpoint: the end of a VP/VC connection where
the ATM cell are terminated
−Segment endpoint: the end of a connection segment
This page allows you to use ATM ping, which generates F5
segment and end-to-end loop-back cells to test the reachability
of a segment endpoint or a connection endpoint.
1. From the head Maintenance menu, click on Diagnostic ->
OAM Loopback. The following page is displayed: