Re: IP Prefix-list

This is a good question .

Although you can match exactly the same (and more) with a prefix-list
as with a standard access-list, it seems like the IOS makes a distinction
in some cases.

Here are two examples.

1)
When using a prefix-list under a route-map in a next-hop match it didn't
filter
anything for me whereas it did with a standard access-list matching the
exact
same thing.

2)
In one particular case the ios told me this:
"this command only accepts named standard IP access-lists"

So basically you can use the prefix-list as the access-list in a route-map
to match things, but the IOS will sometimes treat it differently.. at least
that is my experience.

cheers,

LJ

2009/6/27 Robert Kochis <bkochis_at_comcast.net>

> All,
> I am studying for the BSCI exam 642-901. I came across prefix-list
> commands in the Lab Portfolio and I was wondering where a prefix-list
> can be applied?
>
> As noted in the book a prefix-list can be applied to a neighbor
> statement (is this for BGP only?) and I have seen some other posts
> regarding prefix-list being applied to a vlan.
>
> I have never used these statement before and I guess I am looking for
> the constraints. Any docs would help, I looked at Cisco and only found
> the command reference.
>
> Thank you,
> Bob
>
>
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Received on Sun Jun 28 2009 - 08:08:10 ART