Route selection by Prefix length or AD

Unanswered Question
Apr 27th, 2009
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suppose i am getting two routes from one from ospf and one from EIGRP. and ip getting maximum prefix match with ospf then which route it will select... OSPF or EIGRP.

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Giuseppe Larosa Mon, 04/27/2009 - 08:13
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Hello Irfan,

the most specific route is used.


if both protocols propose the same prefix and prefix len the lower AD is installed in the routing table.


Hope to help

Giuseppe


irfan_1505 Thu, 04/30/2009 - 05:18
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then there is no meaning of AD if the maximum match prefix route is coming from higher AD...

Giuseppe Larosa Thu, 04/30/2009 - 06:11
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Hello Irfan,

most specific route first


AD is looked at to break a tie in prefix length


Hope to help

Giuseppe


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