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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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ebug, R # trace 172.16.50.2: sh path to dest add, config t # no router rip: stops running RIP proto. IGRP: Dist vect, cisco prop, scalability, fast convergence, multi paths (def 4, max 6) & unequal load balancing, Periodic & Flash updates, no VLSM, complex metric (1-255) [delay-media speed (10mb=100=1ms), bw (1.2kb-10Gb), reliability (1-255optm), load (optm 0-255), MTU], hold down, poison rev, split horizon, Timers: update-90s, invalid-270s, holddown-270+10s, Flush-630s, Admn Dist:100 IGRP routes : Interior: routes between subnets, System: routes within AS, Exterior: routes out side AS (1-65655). Enable IGRP: Enable IGRP with AS no. (config t, # router igrp 10, # network 172.16.0.0, # wr mem ) Monitoring IGRP: R# sh ip route igrp : sh like RIP+ delay, bw, reliabilty, load, R# sh ip route igrp-shows IGRP routes, R # sh ip protocol-sh all timers, broad freq, etc, R# sh ip int-shows int config, status & global parameters, R# un / debug ip igrp events / transactions : sh IGRP traffic live, config t # no route igrp-stops IGRP. OSPF: Link state proto, used within AS, a grp of routers that share a routing proto. Each router retains own dbase. Huge metric limit 65533, assign cost to a link, load balancing among equal cost links, update-only for a change, pkts carry info for multi routers (tell a friend), can communicate out side AS, supports VLSM, TOS (types of svce routing) EIGRP: Cisco prop, Balanced Hybrid Proto (best path by dist vect, update by link state), fast conv, support VLSM, partial updates, multi proto support (IP/IPX/Apple talk), update-only for change only for neighbors. Exterior Routing proto : used outside an AS. More complex, stores more info about more routers. EGP (Exterior g/way proto): dist vector proto, Dynamic, doesn’t use metrics like interior routing proto, can’t detect or correct routing loops, communicates thro?a core backbone routing net that connects AS together, establishes a set of neighbors to share routing info, send polls to neighbors to check ‘alive? updates other routers within an As. Message types: neighbor acquisition message to check ‘alive? not, neighbor reachability message to check down/not, Poll messages to collect info about remote hosts?network, Error message to identify various errors. BGP (Border g/way proto): An inter AS routing proto used on
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