CISCO路实验2
一，实验拓扑二，实验步骤
（1）配置路由器
Router>enable //进入路由器特权模式
Router#conf t //进入路由器配置模式
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int f0/0 //进入路由器的以太网f0/0接口
Router(config-if)#ip add 192.168.1.1 255.255.255.0 //配置F0/0接口IP地址
Router(config-if)#no sh //激活接口，路由接口默认是关闭的
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#line vty 0 4 //进入路由器的 VTY 虚拟终端下， “vty 0 4”表示vty 0 到vty 4，共5 个虚拟终端
Router(config-line)#password cisco
Router(config-line)#login
//以上是配置 vty 的密码CISCO，即 telnet 密码
Router(config-line)#exit
Router(config)#enable password cisco
Router(config)#end
//以上是配置进入到路由器特权模式的密码
（2）配置telnet PC
PC要配置IP地址，否则telnet不上的
进入CMD
PC>telnet 192.168.1.1
Trying 192.168.1.1 ...Open
User Access Verification
Password: //输入telnet密码
Router>en
Password: //输入进入特权模式密码
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#exit
Router#sh int f0/0
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0004.9a71.4901 (bia 0004.9a71.4901)
Internet address is 192.168.1.1/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 52 bits/sec, 0 packets/sec
5 minute output rate 50 bits/sec, 0 packets/sec
185 packets input, 7558 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
157 packets output, 6673 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
注 ：如果无法从计算机上 ping 通路由器，依照以下步骤进行
（1） 检查计算机、交换机、路由器之间的连接是否松动；
（2） 检查连接线应该是否是直通线；
（3） 检查计算机的网卡和 IP地址是否正常；
（4） 在路由器上，检查以太网接口是否正常
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