配置實例： maui-rtr-10 (Client) maui-rtr-10#show running-config Building configuration...
Current configuration: ! version 12.1 service timestamps debug datetime msec service timestamps log datetime msec no service passWord-encryption ! hostname maui-rtr-10 ! aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default local !--- This is the basic AAA configuration for ppp calls enable secret 5 ! username admin password 0 username maui-rtr-11 password 0 cisco !--- Username for remote router (maui-rtr-11) and shared secret password Shared !--- secret (used for CHAP authentication)must be the same on both sides ! ip subnet-zero ! chat-script Dialout ABORT ERROR ABORT BUSY "" "AT" OK "ATDT /T" TIMEOUT 45 CONNECT /c !--- chat script named "Dialout" is used for the backup dialout. modemcap entry MY_USR_MODEM:MSC=&F1S0=1 !--- Modemcap named "MY_USR_MODEM" will be applied to the AUX port line interface. !--- This modemcap was created using the command: !--- modemcap edit MY_USR_MODEM miscellaneous &F1S0=1 !--- Refer to the Modem-Router Connection Guide for more information ! interface Loopback0 ip address 172.17.1.1 255.255.255.0 ! interface Ethernet0/0 ip address 172.16.1.1 255.255.255.0 no keepalive ! interface Serial0/0 no ip address shutdown no fair-queue ! interface Serial0/1 !--- PRimary Link ip address 192.168.10.2 255.255.255.252 encapsulation ppp clockrate 64000 ppp authentication chap ! interface Async65 !--- Async interface corresponding to the AUX Port(backup link) !--- This was determined using the show line command ip unnumbered Loopback0 !--- This assigns the loopback 0 ip address to this interface. !--- The central router will have a dialer map to this loopback address encapsulation ppp dialer in-band !--- Allow DDR on this interface dialer idle-timeout 30 !--- idle timeout(in seconds)for this link !--- dialer watch checks the status of the primary link !--- every time the idle-timeout eXPires dialer watch-disable 15 !--- delays disconnecting the backup interface (for 15 seconds)after !--- the primary interface is found to be up dialer map ip 172.22.1.1 name maui-rtr-11 broadcast 84007 !--- dialer map for the AUX Port interface of the central router !--- Remember that the central router's AUX port is unnumbered to its Loopback 0 dialer map ip 172.22.53.0 name maui-rtr-11 broadcast 84007 !--- map statement for the route/network being watched !--- address must exactly match the network configured with !--- the dialer watch-list command !--- dials the phone number specified when the watched route disappears dialer watch-group 8 !--- Enable dialer watch on this backup interface !--- Watch the route specified with dialer watch-list 8 dialer-group 1 !--- apply interesting traffic defined in dialer-list 1 async default routing !--- permit routing over the async interface !--- this is required for a routing protocol to run across the async link async mode interactive ppp authentication chap ! router ospf 5 network 172.16.1.0 0.0.0.255 area 0 network 172.17.1.0 0.0.0.255 area 0 network 192.168.10.0 0.0.0.3 area 0 ! ip classless no ip http server ! access-list 101 remark Define Interesting Traffic access-list 101 deny ospf any any !--- Mark OSPF as uninteresting !--- This will prevent OSPF hellos from keeping the link up access-list 101 permit ip any any ! dialer watch-list 8 ip 172.22.53.0 255.255.255.0 !--- define the route to be watched !--- this exact route(including subnet mask) must exist in the routing table dialer-list 1 protocol ip list 101 !--- interesting traffic is defined by access-list 101 !--- This is applied to BRI0 using dialer-group 1 ! line con 0 login authentication NO_AUTHEN transport input none line Aux 0 !--- line configuration for the AUX port exec-timeout 0 0 !--- disable exec timeout on the interface autoselect ppp script dialer Dialout !--- Use the chat script named "Dialout" for outgoing calls. modem InOut !--- enable incoming and outgoing calls modem autoconfigure type MY_USR_MODEM !--- Apply the modemcap MY_USR_MODEM (configured previously) to initalize the modem. transport input all stopbits 1 !--- Improve throughput by redUCing async framing overhead. speed 115200 !--- AUX port on the 2600 supports a speed of 115200. !--- Note: If you are routing through the AUX port, each character generates a !--- processor interrupt. This is an abnormally high load on the CPU, which can be !--- resolved by using a lower AUX port speed. flowcontrol hardware !--- This configures RTS/CTS flow control. line vty 0 4 ! no scheduler allocate end
maui-rtr-11 (Central Site) maui-rtr-11#show running-config Building configuration...
Current configuration: ! version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname maui-rtr-11 ! aaa new-model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default local !--- This is the basic AAA configuration for ppp calls enable secret 5 ! username admin password 0 username maui-rtr-10 password 0 cisco !--- Username for remote router (maui-rtr-10) and shared secret!--- Shared secret(used for CHAP authentication) must be the same on both sides ! memory-size iomem 30 ! ip subnet-zero ! modemcap entry MY_USR_MODEM:MSC=&F1S0=1 !--- Modemcap (MY_USR_MODEM) will be applied to the AUX port line interface !--- This modemcap was created using the command: !--- modemcap edit MY_USR_MODEM miscellaneous &F1S0=1 !--- Refer to the Modem-Router Connection Guide for more information ! interface Loopback0 ip address 172.22.1.1 255.255.255.0 ! interface FastEthernet0/0 !--- Interface to corporate network ip address 172.22.53.105 255.255.255.0 no keepalive duplex auto speed auto ! ! <<-- irrelevant output removed ! interface Serial0/1 !--- Primary Link ip address 192.168.10.1 255.255.255.252 encapsulation ppp ppp authentication chap ! interface Serial0/2 no ip address shutdown ! interface Async65 !--- Async interface corresponding to the AUX Port(backup link) !--- This was determined using the show line command ip unnumbered Loopback0 !--- Use Loopback 0 address for this interface !--- The remote router will have a dialer map to this loopback address encapsulation ppp dialer in-band dialer idle-timeout 900 dialer map ip 172.17.1.1 name
