Juniper JUNOSE 10.0.X PHYSICAL LAYER, Руководство по настройке

Страница: 177 / 262

■
Use to enable or disable the router’s ability to enter into a loopback initiated by
a remote device connected at the T3 layer.
NOTE: Remote loopback is available only on frame-based T3 interfaces configured
to use C-bit framing.
■
Specify one of the following loopback options:
■
customer —Enables the router to enter into loopback when it receives an
appropriate signal from the remote interface
■
network —Disables the router’s ability to enter into loopback when it receives
an appropriate signal from the remote interface; this is the default behavior
■
Examples
host1(config-controll)# path 12 ds3 2 equipment customer loopback
host1(config-controll)# path 12 ds3 2 equipment network loopback
■
Use the no version to restore the default behavior, which disables the router’s
ability to be placed in loopback by a remote device. Using the no version has
the same effect as issuing the command with the network keyword.
■
See path ds3 equipment loopback.
path ds3 loopback remote
■
Use to place a remote device, connected at the T3 layer, in loopback.
■
Specify the remote keyword to send a far end alarm code in the C-bit framing,
as defined in ANSI T1.404, to notify the remote end to activate or (when you
use the
no version) deactivate the line loopback.
NOTE: Remote loopback is available only on frame-based T3 interfaces configured
to use C-bit framing.
■
Example
host1(config)# controller sonet 5/0
host1(config-controll)# path 12 ds3 1 loopback remote
■
Use the no version to turn off the loopback.
■
See path ds3 loopback.
path ds3 t1 loopback remote
■
Use to place a remote device, connected at the T1 over T3 layer, in loopback.
■
Specify one of the following options:
■
line fdl ansi —Sends a repeating 16-bit ESF data link code word (00001110
11111111) to the remote end requesting that it enter into a network line
Testing Interfaces
■ 151
Chapter 4: Configuring Channelized OCx/STMx Interfaces