使用 show cdp entry命令 交换机A 路由器A s1路由器B 交换机B SO 10.1.1.2 10.3.3.210.3.3.1 10.1.1.1 10.2.2.110.2.2.2 R。 uterI# sh cdp entry★ Device ID: RouterB Entry address(es): 工 p address:10.1.1.2 Platform: cisco 2522, Capabilities: Router Interface: Serial0, Port ID (outgoing port):Seriall Holdtime 168 sec Version Cisco Internetwork Operating System Software Ios (tm) 2500 Software (C2500-JS-L) Version 12.0(3) RELEASE SOFTWARE (fci) Copyright (c)1986-1999 by cisco Systems, Inc Compiled Mon 08-Feb-99 18: 18 by phanguye使用show cdp entry 命令 RouterA#sh cdp entry * ------------------------- Device ID: RouterB Entry address(es): IP address: 10.1.1.2 Platform: cisco 2522, Capabilities: Router Interface: Serial0, Port ID (outgoing port): Serial1 Holdtime : 168 sec Version : Cisco Internetwork Operating System Software IOS (tm) 2500 Software (C2500-JS-L), Version 12.0(3), RELEASE SOFTWARE (fci) Copyright (c) 1986-1999 by cisco Systems, Inc. Compiled Mon 08-Feb-99 18:18 by phanguye 10.3.3.2 10.3.3.1 10.1.1.1 10.1.1.2 10.2.2.1 10.2.2.2 S0 S1 交换机A 路由器A 路由器B 交换机B