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Router1#configure terminal 
 Enter configuration commands, one per line.  End with CNTL/Z. 
 Router1(config)#cdp run 
 Router1(config)#interface Serial0/0 
 Router1(config-if)#cdp enable 
 Router1(config-if)#exit 
 Router1(config)#interface FastEthernet0/0 
 Router1(config-if)#no cdp enable 
 Router1(config-if)#exit 
 Router1(config)#interface FastEthernet1/0 
 Router1(config-if)#cdp enable 
 Router1(config-if)#end 
 Router1# 
 注释  CDP(Cisco Diovery Protocol)是思科专有的协议,用于发现相连的思科设备,帮助了解拓朴,缺省是启用的,使用show cdp neighbor detail  命令可以查看相连设备的详细信息 |   
 
 
 
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