Steven is correct - advertise-inactive will advertise
the _best_ BGP route, even if that route is inactive
because a route from another protocol (with a better
preference) has been selected to be the active route.
If the answer were otherwise, it would mean that you
would advertise every BGP route, and that would include
both active and inactive routes to the same destination.
BGP does not provide for advertising multiple paths to
the same destination prefix; any additional advertisement
to a given destination supersedes all previous ones.
-----Original Message-----
From: Przemyslaw Karwasiecki [mailto:karwas@ifxcorp.com]
Sent: Tuesday, October 02, 2001 12:40 PM
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] FW: [BGP advertise-inactive [9:608]] crosspost
I am crossposting this to NSP-Juniper,
because I belive this is correct answer,
and it was posted only to juniper@groupstudy.com
-----Original Message-----
From: Przemyslaw Karwasiecki [mailto:karwas@ifxcorp.com]
Sent: Tuesday, October 02, 2001 3:33 PM
To: Curtis Call; juniper@groupstudy.com
Subject: RE: [BGP advertise-inactive [9:608]]
Thank you.
This is what I was hoping for.
I am saved :-)
BTW -- isn't it default behaviour on cisco?
Przemek
-----Original Message-----
From: Curtis Call [mailto:curtiscall@usa.net]
Sent: Tuesday, October 02, 2001 3:34 PM
To: juniper@groupstudy.com; Przemyslaw Karwasiecki
Subject: Re: [BGP advertise-inactive [9:608]]
The answer is 1. It allows you to advertise routes that are the best
BGP
route, but which are not used by the router because a similar route from
a
more preferred protocol is installed instead. It does not allow you to
advertise routes that are not the preferred BGP route (when you have
multiple
routes learned via BGP to the same destination).
"Przemyslaw Karwasiecki" <karwas@ifxcorp.com> wrote:
> Hello,
>
> Simple questions:
>
> Does BGP ``advertise-inactive'' cause JunOS to
> 1) advertise best BGP routes which hasn't been injected into
> Master Forwarding Table table because of better routes
> from other protocols, or
> 2) advertise all BGP routes from all Adj-RIB-In(s)?
>
> Thank you,
>
> Przemek
>
>
>
>
> Message Posted at:
> http://www.groupstudy.com/form/read.php?f=9&i=608&t=608
> --------------------------------------------------
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/juniper.html
This archive was generated by hypermail 2b29 : Mon Aug 05 2002 - 10:42:37 EDT