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JUNOS 10.1 Network Interfaces Configuration Guide
Configuring the T1 Remote Loopback Response
The T1 facilities data-link loop request signal is used to communicate various network
information in the form of in-service monitoring and diagnostics. Extended
superframe, through the facilities data link (FDL), supports nonintrusive signaling
and control, thereby offering clear-channel communication. Remote loopback requests
can be over the FDL or inband. To configure the router to respond to remote loopback
requests, include the
interface-name t1-options]
By default, the router does not respond to remote loopback requests.
Configuring T1 Framing
By default, T1 interfaces use extended superframe framing format. You can configure
SF (superframe) as an alternative.
To have the interface use the SF framing format, include the
the
To explicitly configure ESF framing, include the
[edit interfaces interface-name t1-options]
Configuring T1 Line Encoding
By default, T1 interfaces use B8ZS line encoding. You can configure AMI line encoding
if necessary.
To have the interface use AMI line encoding, include the
the
To explicitly configure B8ZS line encoding, include the
[edit interfaces interface-name t1-options]
For M Series and T Series routers, you must set the line encoding parameter for
paired ports to the same value. Ports 0 and 1 must share the same value, and likewise
582
Configuring the T1 Remote Loopback Response
remote-loopback-respond
hierarchy level:
[edit interfaces interface-name t1-options]
remote-loopback-respond;
[edit interfaces interface-name t1-options]
[edit interfaces interface-name t1-options]
framing sf;
[edit interfaces interface-name t1-options]
framing esf;
[edit interfaces interface-name t1-options]
[edit interfaces interface-name t1-options]
line-encoding ami;
[edit interfaces interface-name t1-options]
line-encoding b8zs;
statement at the
[edit interfaces
framing
hierarchy level, specifying the
statement at the
framing
hierarchy level, specifying the
line-encoding
hierarchy level, specifying the
line-encoding
hierarchy level, specifying the
statement at
option:
sf
esf
option:
statement at
option:
ami
statement at the
b8zs
option:
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