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Dialer Interface Commands
10-88 Configuring the Dialer Interface
Thismodeofoperationofthedialerinterfaceiscalledspoofinganditisthedefaultmodeforthis
interface.Spoofingmodechangestonon‐spoofingmodewhenthefollowingconditionsaremet:
• Anotherinterfaceorsub‐interfaceissetwiththe
backup interface dialercommand.
•Theinterfaceconfiguredwiththe
backupcommand(theprimaryinterface)isup.
Dial‐on‐demandapplicationsrequirethatadialer‐group,dialer‐listandACLalsobeconfigured.
Syntax
interface dialer [number | multi-point][sub-interface]
Syntax of the “no” Form
Thenoformofthiscommandremovesthedialerinterface:
interface dialer number
Mode
Globalconfiguration:XSR(config)#
Next Mode
DialerInterfaceconfiguration:XSR(config-if<D>)#
Default
Interfaceisspoofed
Examples
ThefollowingexampleconfiguresDialerport200inbackupmodewithminimalsettings:
XSR(config)#interface dialer 200
XSR(config-if<D200>)#ip address 200.17.10.5 255.255.255.0
XSR(config-if<D200>)#encapsulation ppp
XSR(config-if<D200>)#authentication chap
XSR(config-if<D200>)#no shutdown
Thefollowingexampleconfiguresthedialerinpoint‐to‐pointspoofedmodewithinteresting
packetsdefinedbyACL101,adialer‐groupandassociateddialer‐listmappedtoACL101:
XSR(config#access-list 101 permit ip 0.0.0.0 255.255.255.255 255.255.255.255 0.0.0.0
XSR(config)#interface dialer 3
XSR(config-if<D3>)#dialer-group 7
XSR(config)#dialer-list 7 protocol ip list 101
Thefollowingexampleconfiguresthedialerinmulti‐pointspoofedmodewithinterestingpackets
definedbyACL101,adialer‐groupandassociateddialer‐listmappedtoACL101:
XSR(config)#interface dialer 3 multi-point
number Non-spoofed mode for a backup line or spoofed mode for on-demand connectivity to
a remote peer. Dialer interface number ranges from 0 to 255.
multi-point Spoofed, point-to-multi-point mode configuring on-demand connectivity to remote
peers.
sub-interface Sub-interface of the dialer interface.