修改cisco ip的记录

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本文详细介绍了如何通过Telnet登录Cisco交换机，并进行IP地址、默认网关、域名服务器及NTP服务器等基本网络参数的配置流程。

配置本地网络，使用现有Cisco同一网段的地址登录到交换机
telnet 10.x.x.x
User Access Verification

Password:    输入口令 welcome1
dm01sw-ip>
dm01sw-ip>
dm01sw-ip>enable   启用管理模式
Password:   输入口令 welcome1

修改交换机IP:
dm01sw-ip#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
dm01sw-ip(config)#interface vlan 1
dm01sw-ip(config-if)#ip address 新的IP地址新的掩码
例如：
dm01sw-ip(config-if)#ip address 192.168.1.10 255.255.255.0
dm01sw-ip(config-if)#

遗失对主机的连接。

C:\Users\dapzhang>
修改完IP后，交换机启用了新的IP，因此需要修改本地IP到新的IP: 192.168.1.X

User Access Verification

Password: 输入口令 welcome1
dm01sw-ip>enable
Password: 输入口令 welcome1
dm01sw-ip#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.

配置缺省网关：
dm01sw-ip(config)#no ip routing
dm01sw-ip(config)#ip default-gateway 192.168.1.1
dm01sw-ip(config)#end
dm01sw-ip#write memory
Building configuration...
Compressed configuration from 3854 bytes to 1498 bytes[OK]
dm01sw-ip#

配置域名服务器地址：
dm01sw-ip#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
dm01sw-ip(config)#ip domain-name bj.lunar.com
dm01sw-ip(config)#ip name-server 10.16.20.1
dm01sw-ip(config)#ip name-server 10.16.20.3
dm01sw-ip(config)#end
dm01sw-ip#write memory
Building configuration...
Compressed configuration from 3911 bytes to 1527 bytes[OK]
dm01sw-ip#

配置NTP SERVER：
dm01sw-ip# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
dm01sw-ip(config)#ntp server 10.16.16.249 prefer
dm01sw-ip(config)#end
dm01sw-ip#write memory
Building configuration...
Compressed configuration from 4065 bytes to 1622 bytes[OK]
dm01sw-ip#show ntp status
Clock is synchronized, stratum 12, reference is 10.16.16.249
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18
reference time is D476EAA1.E6EB3E01 (20:25:05.902 PRC Sat Dec 15 2012)
clock offset is -0.1687 msec, root delay is 0.87 msec
root dispersion is 12.10 msec, peer dispersion is 0.87 msec
dm01sw-ip#show clock
20:25:10.660 PRC Sat Dec 15 2012
dm01sw-ip#

预览配置：
dm01sw-ip#show running-config
此处省略了显示内容。。。

dm01sw-ip# copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
Compressed configuration from 4065 bytes to 1623 bytes[OK]
dm01sw-ip#
dm01sw-ip#
dm01sw-ip#exit