Thanks for answer.
I have following issue:
JunOS is receiving the same route from iBGP and from OSPF:
karwas@USMIANAPJM20X1A> show route xx.xx.7.0/24
inet.0: 104510 destinations, 104510 routes (103866 active, 0 holddown, 1363 hidden)
+ = Active Route, - = Last Active, * = Both
xxx.xx.7.0/24 *[OSPF/150] 06:55:55, metric 20, tag 0
> via at-3/1/1.1048
[BGP/170] 5d 17:43:49, MED 0, localpref 100, from xxx.xx.0.48
AS path: I
> via at-3/1/1.1048
karwas@USMIANAPJM20X1A>
In default configuration BGP route is not "active", so it is not
advertised to eBGP peers.
I need to advertise such routes (overlapped by OSPF) to eBGP peers,
but on the other hand I dont want to advertise to tose peers other
BGP learned routes which lost BGP selection criteria, like for instance
routes with low LOCAL_PREF.
I wasn't sure if "routes NOT selected by JUNOS as active routes"
has a following meaning:
"routes not selected from BGP protocol routing table (Loc-RIB RFC 1771)
to be insered into Master Forwarding Table (JUNOS DOC)"
or
"routes not selected from BGP Adj-RIB-In (RFC 1771) during BGP
best route selection process"
Przemek
-----Original Message-----
From: Stephen Gill [mailto:gillsr@yahoo.com]
Sent: Tuesday, October 02, 2001 3:16 PM
To: 'Przemyslaw Karwasiecki'; juniper@groupstudy.com;
juniper-nsp@puck.nether.net
Subject: RE: [j-nsp] BGP advertise-inactive
Short Answer:
It exports all routes learned by BGP (even inactive ones).
Long Answer:
http://www.juniper.net/techpubs/software/junos43/swconfig43-routing/html
/bgp-config40.html#1015169
... snip snip ...
By default, BGP stores the route information it receives from update
messages in the JUNOS routing table, and the routing table exports only
active routes into BGP, which BGP then advertises to its peers. To have
the routing table export to BGP all routes learned by BGP even if the
JUNOS software did not select them to be active routes, include the
advertise-inactive statement:
advertise-inactive;
You can advertise nonactive routes for all BGP groups (at the [edit
protocols bgp] hierarchy level), for all peers in a group (at the [edit
protocols bgp group group-name] level), or for an individual peer (at
the [edit protocols bgp group group-name neighbor address] level).
... snip snip ...
-- steve
-----Original Message-----
From: Przemyslaw Karwasiecki [mailto:karwas@ifxcorp.com]
Sent: Tuesday, October 02, 2001 2:09 PM
To: juniper@groupstudy.com; juniper-nsp@puck.nether.net
Subject: [j-nsp] BGP advertise-inactive
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
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