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Dial Backup Commands

10-94 Configuring the Dialer Interface

backup interface dialer

ThiscommanddesignatesaSerialorFast/GigabitEthernet/GigabitEthernetinterfaceorsub‐

interfaceasabackupdialerinterface.

Syntax

backup interface dialer number

Syntax of the “no” Form

no backup interface dialer number

Default

Disabled

Mode

Interfaceconfiguration:XSR(config-if<xx>)#

Examples

TheexamplebelowconfiguresDialerinterface57asthebackupforFa st/GigabitEthernetport2:

XSR(config)#interface fastethernet 2

XSR(config-if<F2>)#backup interface dialer 57

XSR(config-if<F2>)#ip address 192.168.27.114 255.255.255.0

XSR(config-if<F2>)#no shutdown

XSR(config)#interface serial 1/2

XSR(config-if<S1/2>)#physical-layer async

XSR(config-if<S1/2>)#dialer pool-member 1

XSR(config-if<S1/2>)#no shutdown

XSR(config)#interface dialer 57

XSR(config-if<D57>)#dialer pool 1

XSR(config-if<D57>)#dialer redial attempts 3 forever

XSR(config-if<D57>)#dialer string 67921

XSR(config-if<D57>)#encapsulation ppp

XSR(config-if<D57>)#ip address 10.10.10.1 255.255.255.0

XSR(config-if<D57>)#no shutdown

EthernetbackupisappliedfurtherintheexamplebelowwhereDialerinterface57isconfiguredas

theDSLbackup(PPPoE)forFast/GigabitEthernetsub‐interface2.1‐invokingthesub‐interface

enablesPPPoE.NotethattheIPaddressofthePPPoEcallerisnegotiatedoverPPPandtheMTU

sizeisresetto

1492bytestoavoidWebaccessproblemsbyPCsatt achedtotheXSR.

Caution: To configure a backup FastEthernet/GigabitEthernet interface or sub-interface, the port

must be in the shutdown state.

number

Dialerinterfacenumbertouseasthebackupinterface.Range:0to255.

Note: Only one dialer interface can be associated with one dialer pool but one dialer pool may be

associated with many dialer interfaces.

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