It seems to me that you've answered your own question. I currently run OSPF
<--> BGP without the command 'no sync" on my EBGP peers. I've you carefully
read the rfc, or any BGP related document you'll discover that two
requirements must be meet in order for BGP to fully synchronized. The 2
requirements being that BGP knows of the route through redistribution or the
use of the network command. An secondly, the network being advertised must
be present in the route table(RIB). This would explain the ability to make
static routes and have BGP synchronized. I'm sure if you check your
running OSPF(IGP) routing tables for the networks that aren't synchronized
with BGP you will not find a route to these networks in your routing table
at all.
HTH
Nigel.
----- Original Message -----
From: Scott Aitken <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, September 26, 2000 3:29 AM
Subject: bgp and ospf and synchronisation
> Does anyone know of a problem running OSPF as your IGP with BGP?
> BGP seems to have trouble checking the routing table entries (for the
purposes of IGP synchronisation) when then are inserted by OSPF. With OSPF,
it seems you need to stick "no synchronization" on all the BGP peers running
EBGP.
> I have a test network with OSPF and BGP. When I replace OSPF with RIP, or
even statics, the BGP routes are immediately synchronised, but with OSPF
they never are; hence the need to run "no sync...".
> Any thoughts?
> Regards
> Scott Aitken
>
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