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13.1. 自动拨号备份
提问 当广域网链路中断得时候自动拨号恢复备份链路
回答
Router1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#interface BRI0/0
Router1(config-if)#ip address 10.1.99.55 255.255.255.0
Router1(config-if)#encapsulation ppp
Router1(config-if)#dialer idle-timeout 300
Router1(config-if)#dialer map ip 10.1.99.1 name dialhost broadcast 95551212
Router1(config-if)#dialer load-threshold 50 either
Router1(config-if)#dialer-group 1
Router1(config-if)#isdn switch-type basic-ni
Router1(config-if)#isdn spid1 800555123400 5551234
Router1(config-if)#isdn spid2 800555123500 5551235
Router1(config-if)#ppp authentication chap
Router1(config-if)#ppp multilink
Router1(config-if)#exit
Router1(config)#username dialhost password dialpassword
Router1(config)#ip route 0.0.0.0 0.0.0.0 10.1.99.1 180
Router1(config)#dialer-list 1 protocol ip list 101
Router1(config)#access-list 101 deny eigrp any any
Router1(config)#access-list 101 permit ip any any
Router1(config)#router eigrp 55
Router1(config-router)#network 10.0.0.0
Router1(config-router)#end
Router1#
注释 isdn switch-type 定义对端ISDN交换机类型,中国用basic-net3。通过Router1#show isdn status 来查看当前状态
Router1#show isdn status
Global ISDN Switchtype = basic-ni
ISDN BRI1/0 interface
dsl 8, interface ISDN Switchtype = basic-ni
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 85, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI = 86, Ces = 2, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI 85, ces = 1, state = 8(established)
spid1 configured, spid1 sent, spid1 valid
TEI 86, ces = 2, state = 8(established)
spid2 configured, spid2 sent, spid2 valid
Layer 3 Status:
0 Active Layer 3 Call(s)
Activated dsl 8 CCBs = 0
The Free Channel Mask: 0x80000003
Total Allocated ISDN CCBs = 2
Router1#
说明得是关注流量触发了拨号接通以后所有得数据都可以传输,不仅仅是关注流量
13.2. 使用拨号接口
提问 捆绑多个物理接口为一个拨号接口
回答
捆绑两个ISDN BRI接口
Router1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#interface BRI0/0
Router1(config-if)#encapsulation ppp
Router1(config-if)#dialer pool-member 1
Router1(config-if)#isdn switch-type basic-ni
Router1(config-if)#isdn spid1 800555123400 5551234
Router1(config-if)#isdn spid2 800555123500 5551235
Router1(config-if)#ppp authentication chap
Router1(config-if)#exit
Router1(config)#interface BRI0/1
Router1(config-if)#encapsulation ppp
Router1(config-if)#dialer pool-member 1
Router1(config-if)#isdn switch-type basic-ni
Router1(config-if)#isdn spid1 800555123600 5551236
Router1(config-if)#isdn spid2 800555123700 5551237
Router1(config-if)#ppp authentication chap
Router1(config-if)#exit
Router1(config)#interface Dialer1
Router1(config-if)#ip address 10.1.99.55 255.255.255.0
Router1(config-if)#encapsulation ppp
Router1(config-if)#dialer remote-name dialhost
Router1(config-if)#dialer pool 1
Router1(config-if)#dialer idle-timeout 300
Router1(config-if)#dialer string 95551212
Router1(config-if)#dialer load-threshold 50 either
Router1(config-if)#dialer-group 1
Router1(config-if)#ppp authentication chap
Router1(config-if)#ppp multilink
Router1(config-if)#exit
Router1(config)#username dialhost password dialpassword
Router1(config)#ip route 0.0.0.0 0.0.0.0 10.1.99.1 180
Router1(config)#dialer-list 1 protocol ip list 101
Router1(config)#access-list 101 deny eigrp any any
Router1(config)#access-list 101 permit ip any any
Router1(config)#router eigrp 55
Router1(config-router)#network 10.0.0.0
Router1(config-router)#end
Router1#
主机端
dialhost#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
dialhost(config)#username Router1 password dialpassword
dialhost(config)#controller T1 0
dialhost(config-controller)#framing esf
dialhost(config-controller)#clock source line primary
dialhost(config-controller)#linecode b8zs
dialhost(config-controller)#pri-group timeslots 1-24
dialhost(config-controller)#exit
dialhost(config)#interface Serial0:23
dialhost(config-if)#encapsulation ppp
dialhost(config-if)#dialer rotary-group 1
dialhost(config-if)#dialer-group 1
dialhost(config-if)#isdn switch-type primary-dms100
dialhost(config-if)#isdn not-end-to-end 56
dialhost(config-if)#exit
dialhost(config)#interface Dialer1
dialhost(config-if)#ip address 10.1.99.1 255.255.255.0
dialhost(config-if)#encapsulation ppp
dialhost(config-if)#dialer in-band
dialhost(config-if)#dialer idle-timeout 300
dialhost(config-if)#dialer-group 1
dialhost(config-if)#no peer default ip address
dialhost(config-if)#ppp authentication chap
dialhost(config-if)#ppp multilink
dialhost(config-if)#exit
dialhost(config)#access-list 101 deny eigrp any any
dialhost(config)#access-list 101 permit ip any any
dialhost(config)#dialer-list 1 protocol ip list 101
dialhost(config)#router eigrp 55
dialhost(config-router)#network 10.0.0.0
dialhost(config-router)#exit
dialhost(config)#end
dialhost#
注释 本节实现得结果和13.1相同,配置也基本相同,不同得是这里没有使用dialer map命令,在物理接口上也没有配置IP地址,相关配置都在定义得逻辑拨号接口Dialer1上。在Server端使用了PRI |
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