Enterasys Networks XSR CLI Router User Manual


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T1/E1 & T3/E3 Commands
XSR CLI Reference Guide 2-71
Syntax of the “no” Form
no loopback
Default
Disabled
Mode
Controllerconfiguration:XSR(config-controller<xx>)#
Examples
Thefollowingexampleinitiatesalocalloopbacktest:
XSR(config)#controller t1 1/0
XSR(config-controller<T1-1/0>)#framing esf
XSR(config-controller<T1-1/0>)#linecode b8zs
XSR(config-controller<T1-1/0>)#channel-group 0 timeslot 1-24 speed 64
XSR(config-controller<T1-1/0>)#loopback local
ThefollowingexampleconfiguresanIPaddressasaloopbackinterface:
XSR(config)#interface loopback 0
XSR(config-if<L0>)#ip address 193.23.24.1 255.255.255.255
XSR(config-if<L0>)#no shutdown
national bit
For E3 controllers only
ThiscommandsetsthenationalbitintheE3frame‐bit12.
Syntax
national bit {0 | 1}
Syntax of the “no” Form
Thenoformofthiscommandsetsthenationalbittothedefaultvalue:
no national bit
local line
LocalloopbackmodeloopstheentirebandwidthoftheT1/E1/ISDN‐PRI
linetowardthenetwork.Useexternalequipmenttoverifythat theT1/E1/
ISDN‐PRIportisconnectedtotheline.
local payload
SameasLocalline,itmerelyloopsbacktheT1payload,thatis,theXSR
generatesframingat1.536MBytes/sec.
0
Setsthenationalreservedbitto0.
1
Setsthenationalreservedbitto1.
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