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T1/E1 & T3/E3 Commands
2-62 Configuring T1/E1 and T3/E3 Subsystems
Syntax
crc {16 | 32}
Syntax of the “‘no” Form
Thenoformofthiscommandreturnstothe defaultsett ing:
no crc
Default
16
Mode
Interfaceconfiguration:XSR(config-if<xx>)#
Example
Thisexampleenablesthe32‐bitCRContheT1interface:
XSR(config)#interface serial 1/0:2
XSR(config-if<S1/0:2)#crc 32
description
ThiscommandidentifiestheT1/E1orT3/E3controller.Thedescriptionstringprovidesamore
descriptivename/commentforaparticularT1/E1orT3/E3line.Thisparametercanbeastring
valueofarbitrarylength(max80characters).Inallstatisticsreporting,thisvalueidentifiestheT1/
E1orT3/E3lineina
moredescriptiveway.Thiscommandisfunctionalforallserialinterfaces.
Syntax
description “string”
Syntax of the “no” Form
Thenoformofthecommanddeletesthedescription:
no description
Mode
Controllerconfiguration:XSR(config-controller<xx>)#
Examples
ThefollowingexampleconfigurestheT1controllerinboard(NIMcare)1,port0(firstport),with
ESFframing,B8ZSlineencodingandlinesourceclockingwithadescriptionadded:
16 or 32
CRCsizeinbitsperchannelgrouporfractionallink(port).
“string”
Comment(upto80characters)describingtheT1/E1orT3/E3controller.
Quotationsaremandatory.