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路由器備份配置( 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:浮動(dòng)的靜態(tài)路由作備份 。
缺省狀態(tài)下,Cisco路由器選擇路由的順序?yàn)殪o態(tài)路由,動(dòng)態(tài)路由,缺省路由,這是由各種路由的權(quán)值決定的 。
可以手動(dòng)改變靜態(tài)路由的權(quán)值大小,使得其可以在動(dòng)態(tài)路由之后,該靜態(tài)路由就成為浮動(dòng)的靜態(tài)路由 。假如在動(dòng)態(tài)路由表中找不到相應(yīng)有路由時(shí),浮動(dòng)的靜態(tài)路由才可以被選中,以傳輸數(shù)據(jù) 。
一般的,對(duì)于X.25線路用浮動(dòng)的靜態(tài)路由作撥號(hào)備份,非凡適合 。不過,用浮動(dòng)的靜態(tài)路由可以用任何線路備份其他任何線路 。
 
注重:用浮動(dòng)的靜態(tài)路由作X.25線路的備份線路則X.25線路必須起動(dòng)態(tài)路由,否則無法實(shí)現(xiàn)雙向備份 。
浮動(dòng)靜態(tài)路由配置步驟:
1、正確配置主干線路,保證其能正常通信
2、配置主干線路的動(dòng)態(tài)路由
3、正確配置備份線路,保證其能正常通信
4、配置通過備份線路的浮動(dòng)靜態(tài)路由
ip route 目地子網(wǎng)地址 子網(wǎng)掩碼 相鄰路由器相鄰端口地址 權(quán)值
其中,權(quán)值數(shù)值越高其路由優(yōu)先權(quán)越低權(quán)值范圍在1-255之間
 
實(shí)例:
COSCO 2501-above的配置

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