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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-24 15:23:54 发布人：wongrs | |
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nt IOS file (if multi flash), hw config, sw ver, Register setting, boot images, sh process: active process, cpu utilzn, sh mem: mem allctn stat, sh stacks- sh reason for crash/reboot, R# sh buffer- sh buffer stat, sh int- sh all int config, sh proto: sh all layer3 proto config, sh ip proto- IP proto in detail Cisco Discovery Protocol (CDP): allows access config info on other routers with single command, uses SNAP broadcasts at DLLayer. CDP starts by default (ver10.3/later) & discovers neighboring routers running CDP thro data link broad. updates: 60 sec, holdtime: 180 sec, # config t, # cdp timer 60, # cdp holdtime 180 (global), R# sh cdp int: int stat, config info, encaps, cdp timers. R# sh cdp entry */ routerA: * shows info recd from all routers / only router A. R# sh cdp neighbors: shows cdp updates (device ID, local int/port, holdtime, capability, platform5000, neibhor port ID) (capa- R router, T trans bridge, B source route bridge, S switch, H host, I igmp), R# sh cdp neighbors detail: shows cdp enrty+ sh cdp neighbors R# sh cdp traffic: reveals amount of pkts sent & recd among neighbors; config t, # no cdp run (cdp off-all int-router), # config int, # no cdp enable (cdp off- single int) Telnet : Virtual Term conns: part of tcp/ip proto allows to connect to remote hosts and routers. Cisco supports 5 simultaneous (vty 0 4) telnet sessions. R# telnet [ip add], ip add of any active int on the router. R# exit: to close session. Ctrl+shift+6 X : return to org router w/o closing telnet. # 1, return: takes back to telnet session R# sh sessions : sh all telnet sessions/conn no, host, add, byte, idle, conn name. Hostnames: router can resolve ip add to hostnames. Config t, # ip host routerC 23 172.16.40.2 (23 telnet port- optl), R # sh host / s: sh all> hosts, flags (perm/temp, ok/ex), age (hrs), type (proto), ip add, t# no ip domain-lookup: disables router DNS lookup (enabled by default), to re-enable DNS lookup, t# ip domain-lookup, t# ip name-server 172.16.30.8 (max 6 add) IP Add config: config t, # int s0, # IP address [ ip-add] [ subnet-mask] - config IP add, Subnet mask for serial int s0. # sh interfaces-shows all interface types & their associtd IP adds. use CDP command to see IP add of neighbor routers. Inter Network Testing : R# telnet : shows all layers are working, verify appl layer c
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