HSRP question!

Unanswered Question
Jul 9th, 2008

I have a router that has the following configuration on one of the Eth interfaces:

interface FastEthernet2/0

ip address

ip helper-address

ip helper-address

ip directed-broadcast

ip pim sparse-dense-mode

ip cgmp

speed 100


standby 24 ip

standby 24 priority 90


However, the isn't assigned on any of the other interfaces but I am able to ping it and telnet to it which connects me to the router. I am puzzled as where the ip is, hich is assigned for the HSRP interface !

Thanks in advance for your help!


I have this problem too.
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ralphcarter Wed, 07/09/2008 - 12:54

HSRP is enabled for this fast 2/0 interface. HSRP uses a mac-address in the form of 00-00-0c-07-ac-xx where xx is group 24 in hex. When this router interface uses hsrp and has a higher priority then its peers, then the hsrp ip is bound to this interface using a custom mac address.

Do a "show standby" and it will explain more about your config.

wilson_1234_2 Wed, 07/09/2008 - 13:02

It is located on your router as a virtual interface.

Typically there would be a second router with a lower or higher priority that would be part of the router "pool".

Higher priority wins and all of the routers together would be seen as by anything using them as a gateway.

If the highest priority router fails, the second highest priority takes over as and none of the devices using the interface as a gateway, knows anything about the failure of the first router.


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