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JunosE 11.3.x Command Reference Guide N to Z
path ds1|e1 loopback
Syntax
Release Information
Description
Options
142
path pathChannel { ds1 | e1 } tributaryIdentifier loopback
{ local | network { line | payload } }
no path pathChannel { ds1 | e1 } tributaryIdentifier loopback
path pathChannel ds1 tributaryIdentifier loopback remote
{ line fdl { ansi | bellcore } | payload [ fdl ] [ ansi ] }
no path pathChannel { ds1 | e1 } tributaryIdentifier loopback remote
Command introduced before JunosE Release 7.1.0.
Configures a loopback at the DS1/E1 over SONET/SDH VT layer on channelized SONET
and SDH interfaces. The no version turns off the loopback.
pathChannel—Number, in the range 1–2147483648, that identifies the path
tributaryIdentifier—Specifier for the tributary in the format
pathChannel { ds1 | e1 } pathPayload/tributaryGroup/tributaryNumber
pathPayload—Payload number for the path; value is 1 for SONET and in the range
1–3 for SDH
tributaryGroup—Number, in the range 1–7, that identifies the group within the path
tributaryNumber—Number of the tributary within the tributary group; the value is in
the range 1–4 if the tributary type is vt15 or tu11 and in the range 1–3 if the tributary
type is tu12
local—Loops the router output data back toward the router at the T1/E1 framer; on
supported line modules also sends an alarm indication signal (AIS) out toward the
network.
network { line | payload }—Specify the line keyword to loop the data back toward the
network before the T1/E1 framer and automatically set a local loopback at the HDLC
controllers. Specify the payload keyword to loop the payload data back toward the
network at the T1/E1 framer and automatically set a local loopback at the HDLC
controllers.
remote line fdl ansi (T1 line only)—Sends a repeating 16-bit ESF data link code word
(00001110 11111111) to the remote end requesting that it enter into a network line
loopback. Specify the ansi keyword to enable the remote line FDL ANSI bit loopback
on the T1 channel, according to the ANSI T1.403 specification.
remote line fdl bellcore (T1 line only)—Sends a repeating 16-bit ESF data link code
word (00010010 11111111) to the remote end requesting that it enter into a network line
loopback. Specify the bellcore keyword to enable the remote line FDL Bellcore bit
loopback on the T1 channel, according to the Bellcore TR-TSY-000312 specification.
remote payload [ fdl ] [ ansi ] (T1 line only)—Sends a repeating 16-bit ESF data link
code word (00010100 11111111) to the remote end requesting that it enter into a network
Copyright © 2010, Juniper Networks, Inc.
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