路由器备份配置( 五 )


TIMEOUT 60 CONNECT c
!
interface Ethernet0
ip address 192.192.193.1 255.255.255.0
!
interface Serial0
ip address 192.192.192.1 255.255.255.0
bandwidth 64
clockrate 64000
!
interface Serial1no ip address
shutdown
!
interface Async1
ip address 166.71.70.1 255.255.255.0
encapsulation ppp
async dynamic address
async dynamic routing
async mode dedicated
dialer in-band
dialer map ip 167.71.70.2 name down moden-script lab broadcast 3631
dialer-group 1
no cdp enable
ppp authentication chap
!
router rip
network l92.192.192.0
nctwork 192.192.193.0
!
no ip classless
ip route 0.0.0.0 0.0.0.0 166.71.70.2
ip routc 192.192.191.0 255.255.255.0 166.71.70.2
dialer-list 1 protocol ip permit
!
line con 0
line aux 0
modem InOut
modem autoconfigure discovery
stopbits 1
rxspeed 38400
txspeed 38400
flowcontrol hardware
line vty 0 4
no login
!
end
 
 
!Cisco 2501 named down configurationCisco 2501-down 的配置Current configuration:
!
version 11.2
no service udp-small-servers
no servicc tcp-small-servers
!
hostname down
!
enable secret 5 $1$m8S4$lnrkhnJDtCVtSvTpXO8v/0
enable password cisco
!
username above password 7 095C5E19
chat-script lab ABORT ERROR ABORT BUSY ABORT "NO ANSWER" "" "AT H" OK "ATDT T" TIMEOUT 60 CONNECT C
!
interface Ethernet 0
ip address 192.192.191.1 255.255.255.0
!
interface Serial0
backup delay 10 10
backup interface Async1
ip address 192.192.192.3 255.255.255.0
!
interface Seriall
no ip address
shutdown
!
interface Async1
ip address 166.71.70.2 255.255.255.0
encapsulation ppp
async dynamic address
async dynamic routing
async mode dedicated
dialer in-band
dialer map ip 166.71.70.1 name above modem-script lab broadcast 3621
dialer-group 1
no cdp enable
ppp authentication chap
 
!
router rip
net work 192.192.192.0
net work 192.192.191.0
!
no ip classless
ip route 0.0.0.0 0.0.0.0 166.71.70.1
ip route 192.192.193.0 255.255.255.0 166.71.70.1
dialer-list 1 protocol ip permit
!
line con 0
line aux 0
modem InOut
modem autoconfigure discovery
stopbits 1
rxspeed 38400
txspeed 38400
flowcontrol hardware
line vty 0 4
no login

方法3:浮动的静态路由作备份 。
缺省状态下,Cisco路由器选择路由的顺序为静态路由,动态路由,缺省路由,这是由各种路由的权值决定的 。
可以手动改变静态路由的权值大小,使得其可以在动态路由之后,该静态路由就成为浮动的静态路由 。假如在动态路由表中找不到相应有路由时,浮动的静态路由才可以被选中,以传输数据 。
一般的,对于X.25线路用浮动的静态路由作拨号备份,非凡适合 。不过,用浮动的静态路由可以用任何线路备份其他任何线路 。
 
注重:用浮动的静态路由作X.25线路的备份线路则X.25线路必须起动态路由,否则无法实现双向备份 。
浮动静态路由配置步骤:
1、正确配置主干线路,保证其能正常通信
2、配置主干线路的动态路由
3、正确配置备份线路,保证其能正常通信
4、配置通过备份线路的浮动静态路由
ip route 目地子网地址 子网掩码 相邻路由器相邻端口地址 权值
其中,权值数值越高其路由优先权越低权值范围在1-255之间
 
实例:
COSCO 2501-above的配置

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