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router(config-if)#ip accounting output-packets 
 router#sh ip accounting output-packets 
 Source Destination Packets Bytes 
 192.1.1.110 192.1.1.97 5 500 
 172.17.246. 128 192.1.1.110 8 704 
 Accounting data age is 2d23h 
 或者 
 router(config)#int s 0/0 
 router(config-if)#ip accounting access-violations 
 router#sh ip accounting [checkpoint] access-violations 
 Source Destination Packets Bytes ACL 
 192.1.1.110 224.0.0.5 46 3128 19 
 Accounting data age is 7 
 2、说明 
 ●此方法如果在器负载特大的时候请谨慎使用,因其会使系统性能下降 
 ● 基于地址对的字节数量及数据包数量统计 
 ● 通常只支持outbound的数据包,及被ACL拒绝的数据包(支持IN 和 OUT方向的ACL) 
 ● 只统计穿越路由器的流量,源或目的是该器的数据包不做统计 
 ● 支持所有的switching path,除了Autonomous Switching 
 ● 可以通过SNMP来访问统计值,MIB是OLD-CIO-IP-MIB, lipAccountingTable 
 ● ip accounting还支持其他的监测方式,如基于tos,mac-address等 
 二、netflow 
 1、配置方法 
 router (config-if)#ip route-cache flow 
 router (config)#ip flow-export destination 172.17.246.225 9996 
 router (config)#ip flow-export version 5 peer-as | origin-as  
 Optional configuration 
 router (config)#ip flow-export source loopback 0 
 router (config)#ip flow-cache entrs 1024-524288  
 router (config)#ip flow-cache timeout 
 sh ip cache flow 
 IP packet size distribution (132429191 total packets): 
 1-32 64 96 128 160 192 224 256 288 320 352 384 416 448 480 
 .000 .191 .024 .009 .010 .006 .005 .008 .003 .005 .003 .003 .002 .001 .001 
 512 544 576 1024 1536 2048 2560 3072 3584 4096 4608 
 .001 .002 .107 .032 .578 .000 .000 .000 .000 .000 .000 
 IP Flow Switching Cache, 278544 bytes 
 33 active, 4063 inactive, 7975259 added 
 104834714 ager polls, 0 flow alloc failures 
 Active flows timeout in 30 minutes 
 Inactive flows timeout in 15 seconds 
 last clearing of statistics n |   
 
 
 
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