C2503 C2503#wr t ###### Current configuration: ! version 10.2 ! hostname C2503 ! enable passWord test ! username C4000 password cisco !--- See username eXPlanation in the following section. isdn switch-type basic-dms100 ! interface Ethernet0 ip address 172.16.10.1 255.255.255.0 ! interface Serial0 no ip address shutdown ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.16.20.1 255.255.255.0 encapsulation ppp bandwidth 56 dialer idle-timeout 300 dialer map ip 172.16.20.2 name C4000 speed 56 broadcast 14155551234 dialer map ip 172.16.20.2 name C4000 speed 56 broadcast 14155556789 dialer hold-queue 5 dialer load-threshold 100 dialer-group 1 isdn spid1 408555432101 5554321 isdn spid2 408555987601 5559876 ppp authentication chap ! router igrp 1 network 172.16.0.0 ! ip route 192.168.24.0 255.255.255.0 172.16.20.2 access-list 100 deny ip 0.0.0.0 255.255.255.255 255.255.255.255 0.0.0.0 access-list 100 permit ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255 ! ! dialer-list 1 list 100 ! line con 0 line aux 0 line vty 0 4 password test login ! end C4000 C4000 C4000#wr t ###### Current configuration: ! version 10.2 ! hostname C4000 ! enable password test ! username C2503 password cisco !--- See username explanation in the following section. isdn switch-type basic-dms100 ! interface Ethernet0 ip address 192.168.24.65 255.255.255.0 ! interface Serial0 no ip address shutdown ! interface Serial1 no ip address shutdown ! interface BRI0 ip address 172.16.20.2 255.255.255.0 encapsulation ppp bandwidth 56 dialer idle-timeout 300 dialer map ip 172.16.20.1 name C2503 speed 56 broadcast 14085554321 dialer map ip 172.16.20.1 name C2503 speed 56 broadcast 14085559876 dialer hold-queue 5 dialer load-threshold 100 dialer-group 1 isdn spid1 415555123401 5551234 isdn spid2 415555678901 5556789 ppp authentication chap ! router igrp 1 network 172.16.0.0 network 192.168.24.0 ! ip route 172.16.10.0 255.255.255.0 172.16.20.1 access-list 100 deny ip 0.0.0.0 255.255.255.255 255.255.255.255 0.0.0.0 access-list 100 permit ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255 ! ! dialer-list 1 list 100 ! line con 0 line aux 0 line vty 0 4 password test login ! end 相关说明 dialer map ip 172.16.20.1 name C2503 speed 56 broadcast 14085554321 dialer map ip 172.16.20.1 name C2503 speed 56 broadcast 14085559876
The dialer map command is used with CHAP authentication to place the initial call to the remote router when interesting traffic is forwarded to the BRI interface. After the connection is active, the dialer idle-timeout command determines how long it will remain active. A dialer map statement is required for each ISDN phone number that will be called. Be aware though, that two dialer map statements pointing to the same location might activate both B channels when you may only want to use one channel. Note: The command parameters for this example are:
172.16.20.1 = the IP address of the remote router's BRI interface. To determine this address, type show interface bri 0 at the remote router's console PRompt.
name C2503 = the hostname of the remote router. The name is case sensitive and should match the name configured for the username command above.
speed 56 = sets the dialer speed to 56k for ISDN circuits that are not 64k end-to-end, and should be included in both routers' dialer map statements. Most installations in North America must be configured for 56K.
broadcast = allows the forwarding of broadcast packets. Unless broadcast packets are specified as interesting packets by the dialer-list command, they will only be forwarded when the ISDN link is active.
14085554321 14085559876 = the remote router's ISDN telephone numbers.
