如何查询数据包转发的方式

張伟佳

路由器收到一个需要路由的数据包一般会有：进程交换，快速交换（基于缓存），cef。我想咨询下各位，我们如何查询一个数据包过来时通过哪种方式转发出去的。知道的麻烦解答一下，谢谢了！

WOLF某某某

R3#show ip inter e0/1
Ethernet0/1 is up, line protocol is up
  Internet address is 9.9.23.3/24
  Broadcast address is 255.255.255.255
  Address determined by setup command
  MTU is 1500 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing access list is not set
  Inbound  access list is not set
  Proxy ARP is enabled
  Local Proxy ARP is disabled
  Security level is default
  Split horizon is enabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF switching turbo vector
  IP Null turbo vector
  Associated unicast routing topologies:
        Topology "base", operation state is UP
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF
  Router Discovery is disabled
  IP output packet accounting is disabled
  IP access violation accounting is disabled
  TCP/IP header compression is disabled
  RTP/IP header compression is disabled
  Probe proxy name replies are disabled
  Policy routing is disabled
  Network address translation is disabled
  BGP Policy Mapping is disabled
  Input features: MCI Check
  Output features: IP Post Routing Processing
  Post encapsulation features: MTU Processing, IP Protocol Output Counter, IP Sendself Check
  WCCP Redirect outbound is disabled
  WCCP Redirect inbound is disabled
  WCCP Redirect exclude is disabled

红色的是快速转发
蓝色的是CEF转发
如果这两个部分都是disable,就是进程转发

張伟佳

麻烦问下如果快速交换和CEF都打卡的话，是不是使用CEF转发的还是其他的？

張伟佳

WOLF某某某 发表于 2014-9-18 20:42
R3#show ip inter e0/1
Ethernet0/1 is up, line protocol is up
  Internet address is 9.9.23.3/24

麻烦问下如果快速交换和CEF都打卡的话，是不是使用CEF转发的还是其他的？

WOLF某某某

張伟佳 发表于 2014-9-19 20:41
麻烦问下如果快速交换和CEF都打卡的话，是不是使用CEF转发的还是其他的？

都是enable，CEF有效

張伟佳

WOLF某某某 发表于 2014-9-20 09:01
都是enable，CEF有效

非常感谢！！！