Chapter3: Applications and Configuration Overview
Avidia System Configuration and Management User Manual 61
Example ATM-Layer Loopbacks
The following sections provide an overview on running some segment loopbacks. For an:
•Avidia channel card to loopback at a modem, see page62.
•Avidia line card to loopback at an ATM switch, see page 63 (this can also be an end-to-end
loopback when a VPC or VCC terminates at the switch).
•Avidia line card to loopback at an ATM node beyond the ATM switch, see page63 (this
can also be an end-to-end loopback when a VPC or VCC terminates at the ATM node).
•ATM switch to loopback at a modem, see page64 (this can also be an end-to-end
loopback).
•ATM switch to loopback at an Avidia line card, see page65 .
•ATM node beyond the ATM switch to loopback at a modem, see page65 (this can also be
an end-to-end loopback).
•ATM node beyond the ATM switch to loopback at an Avidia line card, see page66.
The following sections provide an overview on running some end-to-end loopbacks. For an:
•Avidia line card to loopback at an ATM switch (when the VPC or VCC terminates at
thes witch), see page 63.
•Avidia line card to loopback at an ATM node beyond the ATM switch, see page63 (this
can also be a segment test).
•Avidia line card to loopback at a modem, see page67 .
•ATM switch to loopback at a modem, see page64.
•ATM node beyond the ATM switch to loopback at a modem, see page65.
You can also run loopbacks to subtended Avidia systems. For a subtended Avidia segment
loopback, see page68. To configure and run any OAM loopbacks, go to “OAM Alarms and
Loopbacks” on page57.