子下向上拨号连入拨号备份： Config t hostname xxxx enable secret oilsjz username xxxx password xxxxx username xxxx password 0 xxxx no ip domain-lookup chat-script reset1 "" "ATZ" OK \c chat-script dial1 ABORT ERROR "" "AT Z" OK "ATDT \T" TIMEOUT 60 CONNECT \c interface fastEthernet0 ip address 10.179.27.65 255.255.255.192 no shutdown interface Serial1 backup delay 10 10 backup interface Serial0 ip address 10.179.251.41 255.255.255.252 encapsulation frame-relay frame-relay interface-dlci 200 no shutdown interface serial0 phy async ip address 10.179.251.139 255.255.255.240 async mode dedicated no shutdown encapsulation ppp dialer in-band dialer idle-timeout 3600 dialer enable-timeout 60 dialer map ip 10.179.251.129 name center-3640 modem-script dial1 ZZZZZZ dialer map ip 10.179.251.129 name center-3640 modem-script dial1 ZZZZZZ dialer map ip 10.179.251.129 name center-3640 modem-script dial1 ZZZZZZ dialer map ip 10.179.251.129 name R-ZZZZ modem-script dial1 ZZZZZZ dialer hold-queue 50 dialer-group 1 ppp authentication pap chap ip route 0.0.0.0 0.0.0.0 10.179.251.129 access-list 1 per 10.179.27.64 0.0.0.63 dialer-list 1 protocol ip list 1 router eigrp 100 network 10.0.0.0 line con 0 exec-timeout 0 0 line 1 script reset reset1 modem InOut transport input all speed 38400 flowcontrol hardware line vty 0 4 password oilsjz login end