我正在尝试使用 3 个路由器建立网络。
“西”和“东”路由器均通过 PA-4T+ 串行接口连接到“中央”路由器。Central 上的第一个接口 (s1/0) 的 IP 为 20.0.0.1，而 s1/2 的 IP 为 20.0.0.2。West 路由器上的 s1/0 的 IP 为 20.0.0.3，并连接到 Central 上的 s1/0。
East 上的 s1/0 获得 IP 20.0.0.4，并连接到 Central 上的 s1/1。当我从 Central ping West 或从 Central ping West 时一切正常，而当我对 East 执行相同操作时，我没有收到任何响应。
我确保在每个接口上运行“no shutdown”指令，并将网络 20.0.0.0 添加到每个路由器上的路由引擎。
东配置：
!
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname East
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
!
!
ip cef
no ip domain lookup
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface Serial1/0
ip address 20.0.0.4 255.0.0.0
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
router rip
network 20.0.0.0
!
!
no ip http server
no ip http secure-server
!
!
no cdp log mismatch duplex
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
!
end
中央：
!
!
!
!
!
!
!
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Central
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$5lB2$4S/AyQOavlPIFAAThGJGM1
!
no aaa new-model
no ip icmp rate-limit unreachable
!
!
ip cef
no ip domain lookup
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
interface FastEthernet0/0
ip address 10.1.1.1 255.0.0.0
duplex half
!
interface Serial1/0
ip address 20.0.0.1 255.0.0.0
serial restart-delay 0
!
interface Serial1/1
ip address 20.0.0.2 255.0.0.0
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
router rip
network 10.0.0.0
network 20.0.0.0
!
!
no ip http server
no ip http secure-server
!
!
no cdp log mismatch duplex
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
!
end
西：
!
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname West
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
no ip icmp rate-limit unreachable
!
!
ip cef
no ip domain lookup
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
interface FastEthernet0/0
ip address 10.1.1.2 255.0.0.0
duplex half
!
interface Serial1/0
ip address 20.0.0.3 255.0.0.0
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
router rip
network 10.0.0.0
network 20.0.0.0
!
!
no ip http server
no ip http secure-server
!
!
no cdp log mismatch duplex
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
!
!
end