决定主从接口(必需) 决定要监视的网络或路由(必需) 给接口配ddr备份(必需) 建立一个Dialer List (必需) 在备份接口上设定关闭时间(可选)
maui?soho?01 (1600) maui?soho?01#show running?config Building configuration... Current configuration : 1546 bytes ! version 12.1 no service single?slot?reload?enable service timestamps debug uptime service timestamps log uptime no service passWord?encryption ! hostname maui?soho?01 ! logging rate?limit console 10 except errors aaa new?model aaa authentication login default local aaa authentication login NO_AUTHEN none aaa authentication ppp default local !??? 这是点对点call的基本3A配置。 enable secret 5 ! username maui?nas?05 password 0 cisco !??? 远程路由的用户名 (maui?nas?05) and 和共用的密码. !??? 共用的密码(用于 CHAP认证)两端必须相同. Cisco ? Configuring DDR Backup using BRIs and Dialer Watch ip subnet?zero no ip finger ! isdn switch?type basic?ni ! interface Loopback0 ip address 172.17.1.1 255.255.255.0 ! interface Ethernet0 ip address 172.16.1.1 255.255.255.0 ! interface Serial0 !??? 主链路 ip address 192.168.10.2 255.255.255.252 encapsulation ppp ppp authentication chap ! interface BRI0 ip address 172.20.10.2 255.255.255.0 !??? BRI口的ip 地址(备份链路) encapsulation ppp dialer idle?timeout 30 !??? 备份链路的超时时间 (秒) . !??? Dialer watch 检查 主链路的周期超时时间。 dialer watch?disable 15 !??? 主链路恢复15秒后挂断备份链路 dialer load?threshold 1 outbound !??? 多链路复用负载门限值。（1-255），超过门限就启用ppp multilink. dialer map ip 172.20.10.1 name maui?nas?05 broadcast 5551111 !??? BRi接口与远端路由器的拨叫映射。 dialer map ip 172.22.53.0 name maui?nas?05 broadcast 5551111 !??? 被dialer watch?list命令监视的路由/网络的映射声明 !??? 这个网络要和dialer watch?list命令中的一样。 !??? 当被监视的路由消失了, 就拨起指定的连接。 dialer watch?group 8 !??? 在备份接口开启dialer watch。 !??? 监视由dialer watch?list 8所指定的路由。. dialer?group 1 !??? 应用在dialer?list 1中指定的感爱好流量. isdn switch?type basic?ni isdn spid1 51255522220101 5552222 isdn spid2 51255522230101 5552223 !??? SPID 信息，你的电信服务商会提供给你。 !??? 有的地区不需要spid. ppp authentication chap !???用CHAP验证. ppp multilink !??? 启用ppp多路并用。. ! router ospf 5 log?adjacency?changes >network 172.16.1.0 0.0.0.255 area 0 network 172.17.1.0 0.0.0.255 area 0 network 172.20.10.0 0.0.0.255 area 0 network 192.168.10.0 0.0.0.3 area 0 ! ip classless no ip http server ! dialer watch?list 8 ip 172.22.53.0 255.255.255.0 !??? 定义了要监视的路由条目. !??? 这条确切路由(包含子网掩码) 必须是路由表中存在的。 !??? 用dialer watch?group 8在接口中应用。 access?list 101 remark Define Interesting Traffic access?list 101 deny ospf any any !??? 标记ospf为非感爱好流量。. !??? 这是为了防止ospf的keepalive拨起链路。. access?list 101 permit ip any any dialer?list 1 PRotocol ip list 101 !??? 感爱好流量由访问列表101定义。. !??? 这个用dialer?group 1应用到bri口。. ! line con 0 login authentication NO_AUTHEN transport input none line vty 0 4 ! end maui?nas?05 (3640) maui?nas?05#show running?config Building configuration... Current configuration: ! Cisco ? Configuring DDR Backup using BRIs and Dialer Watch version 12.1 service timestamps debug uptime service timestamps log uptime no service password?encryption ! hostname maui?nas?05 ! 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 maui?soho?01 password 0 cisco !??? Username for remote router (maui?soho?01) and shared secret. !??? Shared secret(used for CHAP authentication) must be the same on !??? both sides. ! ip subnet?zero ! isdn switch?type basic?ni ! interface Loopback0 ip address 172.22.1.1 255.255.255.0 ! interface Ethernet0/0 ip address 172.22.53.105 255.255.255.0 ! interface Ethernet0/1 no ip address shutdown ! interface BRI1/0 !??? Interface for backup link. ip address 172.20.10.1 255.255.255.0 encapsulation ppp dialer map ip 172.20.10.2 name maui?soho?01 broadcast !??? This is the dialer map with IP address and authenticated username !??? for the remote destination. The name should match the authentication !??? username provided by the remote side. The dialer map statement is !??? used even though this router is not dialing out !??? (that is, the phone number is not specified). dialer?group 1 !??? Apply interesting traffic defined in dialer?list 1. isdn switch?type basic?ni isdn spid1 51255511110101 5551111 isdn spid2 51255511120101 5551112 !??? SPID information. Contact your telco for the SPID format. !??? In many parts of the world, SPIDs are not required. !??? In sUCh cases, omit the above two commands. ppp authentication chap ppp multilink Cisco ? Configuring DDR Backup using BRIs and Dialer Watch ! !??? Output removed. ! interface Serial2/0 !??? Primary link. ip address 192.168.10.1 255.255.255.252 encapsulation ppp clockrate 64000 ppp authentication chap ! !??? Output removed. ! router ospf 5 network 172.20.10.0 0.0.0.255 area 0 network 172.22.1.0 0.0.0.255 area 0 network 172.22.53.0 0.0.0.255 area 0 network 192.168.10.0 0.0.0.3 area 0 default?information originate ! ip classless ip route 0.0.0.0 0.0.0.0 Ethernet0/0 no ip http server ! dialer?list 1 protocol ip permit !??? This defines all IP traffic as interesting. OSPF does not need !??? to be marked uninteresting since this link does not dial out. !??? Adjust the interesting traffic definition depending on your needs. ! line con 0 login authentication NO_AUTHEN transport input none line 97 102 line aux 0 line vty 0 4 ! end
