先说点题外话，本来这两天是没时间来更新博客了的，但是事情出了点变化，使得我又有时间上网了，上网当然要到博客里面去逛逛了，没想到收到一封来自51cto的短信，说我的博客已经被评为推荐博客了，呵呵，真的很高兴能得到这样的荣誉，51cto让我感受到了学习的乐趣和写博客的动力（之前在csdn很没动力），更重要的是，能和这么多的网络技术爱好者共同学习，实在是一件很美妙的事情。感谢51cto。
最近我的这几篇关于cisco基础实验的文章都有幸得到了推荐，从网友的回复看，大多数网友还是支持我的，虽然我的文章对一部分博友来说很初级，但他们都没有说，相反还得到了他们的多次指点，真的很谢谢他们。当然我相信，我不会永远做初级的实验的，我是按照进度来循序渐进的进行的，总会做到高级一点的实验的，呵呵，当然，今天的实验应该还算初级的，呵呵。下面看实验。
!
Version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r1
!
!
!
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
interface Loopback
ip address 10.1.1.1 255.255.255.0
no ip directed broadcast
!
interface Serial0
ip address 192.168.2.1 255.255.255.0
no ip directed-broadcast
clock rate 64000
!
interface Ethernet0
ip address 192.168.1.2 255.255.255.0
no ip directed-broadcast
!
!
router rip
network 192.168.1.0
network 192.168.2.0
network
10.0.0.0
//我的loopback接口的IP地址为10.1.1.1
!
ip classless
no ip http server
!
!
!
line con 0
transport input none
line aux 0
line vty 0
4 /启用了vty线路方可进行telnet
login
password cisco
!
no scheduler allocate
end
r1# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B
- BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter
area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
U - per-user static route
192.168.1.0/24 is subnetted, 1 subnets
C
192.168.1.0 is directly connected, Ethernet0
10.0.0.0/24 is subnetted, 1 subnets
C
10.1.1.0 is directly connected, Loopback
192.168.2.0/24 is subnetted, 1 subnets
C
192.168.2.0 is directly connected, Serial0
192.168.3.0/24 is subnetted, 1 subnets
R
192.168.3.0 [120/1] via 192.168.2.2, 00:01:25,
Serial0
//这个英文比较简单，应该看得懂
r1#show ip pro
Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 7
seconds
Invalid after 180 seconds, hold down 180,
flushed after
240
//从这句可以得知：该配置采用rip协议，路由器每隔30s发出更新信息，（next due in 7
seconds？），超过180s未收到路由更新则认为该路由无效，如果经过240s还没收到更新信息，这该路由信息将会从路由表中删除。
Outgoing update filter list for all interfaces
is
Incoming update filter list for all interfaces
is
Redistributing: rip
Default version control: send version 1, receive
any version
Interface
Send Recv
Key-chain
Serial0
1 1 2
Ethernet0
1 1 2
Routing for Networks:
192.168.1.0
192.168.2.0
10.0.0.0
Routing Information Sources:
192.168.2.2
120
00:00:09
Distance: (default is
120)
//rip的管理距离默认为120，该值越小越好
!
Version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r2
!
!
!
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
interface Serial0
ip address 192.168.2.2 255.255.255.0
no ip directed-broadcast
!
interface Ethernet0
ip address 192.168.3.1 255.255.255.0
no ip directed-broadcast
!
!
router rip
network 192.168.3.0
network 192.168.2.0
!
ip classless
no ip http server
!
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
no scheduler allocate
end
r2#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B
- BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter
area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
U - per-user static route
192.168.2.0/24 is subnetted, 1 subnets
C
192.168.2.0 is directly connected, Serial0
192.168.3.0/24 is subnetted, 1 subnets
C
192.168.3.0 is directly connected, Ethernet0
192.168.1.0/24 is subnetted, 1 subnets
R
192.168.1.0 [120/1] via 192.168.2.1, 00:08:16, Serial0
10.0.0.0/24 is subnetted, 1 subnets
R
10.1.1.0 [120/1] via 192.168.2.1, 00:02:14,
Serial0
r2#show ip pro
Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 4
seconds
Invalid after 180 seconds, hold down 180,
flushed after 240
Outgoing update filter list for all interfaces
is
Incoming update filter list for all interfaces
is
Redistributing: rip
Default version control: send version 1, receive
any version
Interface
Send Recv
Key-chain
Serial0
1 1 2
Ethernet0
1 1 2
Routing for Networks:
192.168.3.0
192.168.2.0
Routing Information Sources:
192.168.2.1
120
00:00:03
Distance: (default is 120)
//意思同r1中的意思
(2010-02-01 17:33:06)
