From: Pavel Bykov (slidersv@gmail.com)
Date: Fri Feb 20 2009 - 09:50:45 ARST
Route-map or filter-list will do the trick
BUT! the command's purpose is protect you from misconfigured neighbors. Are
neighbors using local-as or similar feature?
I mean, it's not supposed to be happening, so that command solves the
problem for you.
Filtering updates would filter only those updates that do not comply with
rules. "enforce-first-as" resets the whole session, angers the peer, and
forces them to fix the problem.
On Mon, Feb 16, 2009 at 11:22 PM, Hotmail <hussamkibbi@hotmail.com> wrote:
> Hi Experts
>
> If you enabled bgp enforceb firstb as and the UPDATE doesn't contain the
> AS
> of the neighbor as the first AS number in the AS_SEQUENCE, the router sends
> a
> notification and closes the session
>
> Are there any work around for this command as not to close the session? I
> mean
> it's not good to close the session if you got a route not from ebgp and not
> just to ignore it ?
>
> Workaround I think:
>
> Use inbound route-maps to have a check for making sure that the first AS
> in
> the ASPATH segment is the AS of the neighbor ?
>
>
> Regards,
> Hussam
>
>
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