Re: Route Maps

From: Erich Borchert (erichb80@xxxxxxxxxxx)
Date: Thu Feb 14 2002 - 22:21:44 GMT-3


   
You'll need a permit 20 without the set community none attribute applied, if
you want the rest of your routes to be advertised unchanged & the
communities still in-tact to your peer. Set community none is generally
used on the ingress/egress facing EBGP peers & you don't want to accept
their communities or advertise them.

-Erich

----- Original Message -----
From: "Michael Popovich" <m.popovich@home.com>
To: "Jaspreet Bhatia" <jasbhati@cisco.com>; <ccielab@groupstudy.com>
Sent: Thursday, February 14, 2002 5:31 PM
Subject: Re: Route Maps

> I don't think you need the "set community none" in route-map setcomm
permit
> 20.
>
> It is my practice to treat route-maps like access-lists in that there is
an
> implicit deny at the end. So if you wanted the rest of the routes that
> didn't match with 10 then you would just put "route-map setcomm permit 20"
> and that would be it.
>
> MP
> ----- Original Message -----
> From: "Jaspreet Bhatia" <jasbhati@cisco.com>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, February 14, 2002 6:04 PM
> Subject: Route Maps
>
>
> > Folks ,
> > Can someone help me understand this concept ..
> >
> >
> > If I use the following route map
> >
> >
> > neighbor 3.3.3.3 remote-as 300
> > neighbor 3.3.3.3 send-community
> > neighbor 3.3.3.3 route-map setcomm out
> >
> > route-map setcomm permit 10
> > match ip address 1
> > set community no-export
> >
> > access-list 1 permit 172.16.0.0 0.0.255.255
> >
> > up to here I understand that for all routing updates belonging to the
> > 172.16.0.0 network going to the neighbor 3.3.3.3 in remote-as 300 , they
> > will have their community attribute set to no-export and the updates
will
> > not leave as 300 .
> >
> > Now do I have to add the line for the other networks in my as to flow
> > through untouched and not have their community attribute changed ???????
> >
> > route-map setcomm permit 20
> > set community none
> >
> >
> > in order for all the routes to pass through the as 300
> >
> > Thanks
> >
> > Jaspreet



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