From: Jens Petter Eikeland (jenseike@start.no)
Date: Sat Sep 17 2005 - 05:57:51 GMT-3
HI ,
I was wondering the same thing a while ago.. Here is how it is :
prefix-list to match the "default-route" is;
ip prefix-list mebean permit 0.0.0.0/32
all the first 32 bits "must" be zeros.
prefix-list to match "any" route is;
ip prefix-list mrbean permit 0.0.0.0/0 le 32.
All the 32 bits can be "anything" and can have any mask.
Jens Petter Eikeland
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Fra: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Pe vegne av
Venkataramanaiah.R
Sendt: 17. september 2005 10:39
Til: ccielab@groupstudy.com
Emne: Match Any behaviour in Prefix lists
Any idea, which what do we configure for match any when you use the prefix
lists?
In a case of deny only 0.0.0.0/0 <http://0.0.0.0/0> matches all the routes
In a case of Permit, only 0.0.0.0/0 <http://0.0.0.0/0> le 32 matches all the
routes. Just 0.0.0.0/0 <http://0.0.0.0/0> does not match all traffic, rather
it matches just the default route, when used with a permit command.
I am sure this is something to do with the way the prefix lists operate,
which is apparently not clear to me.
Can someone clarify?
TIA
-Venkat
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