在接口上开启HSRP后，默认会关闭ICMP重定向的功能?

血中红

在接口上开启HSRP后，默认会关闭ICMP重定向的功能?

Dennis.

ICMP重定向默认是开启的。
Router#show ip interface f0/0
FastEthernet0/0 is up, line protocol is up
  Internet address is 12.1.1.1/24
  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
  Multicast reserved groups joined: 224.0.0.2
  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

Router(config)#int f0/0
Router(config-if)#no ip redirects  关闭ICMP重定向
Router#show ip int f0/0
FastEthernet0/0 is up, line protocol is up
  Internet address is 12.1.1.1/24
  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
  Multicast reserved groups joined: 224.0.0.2
  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 never sent

Jeff.

HSRP开启，重定向功能就被关闭了。但是你用show ip int xx 可以看到显示还是开始的。实际重定向功能已经无效。
从理论上可以分析：如果Active路由器重定向到stanby路由器，下次主机只要往stanby路由器转发，这明显不符合
HSRP Active路由器转发数据的根本性原理。

人在旅途2013