Re: redistribution bgp>ospf

You could possibly get in trouble if you have an iBGP peering between
multiple hosts. This also does nothing for preventing you from becoming a
transit AS.

On Sun, Feb 24, 2013 at 6:23 AM, Tony Singh <mothafungla_at_gmail.com> wrote:

> Hi
>
> Just a quick sanity check...
>
> I'm redistributing bgp>ospf and using network statements to control how my
> ospf subnets are sent to my ebgp peer, now please correct my understanding
> but the ebgp peer see's the ospf routes coming from my AS number...and when
> I reset this connection I can see in debug ip bgp updates the update
> message for the original ospf routes when the ebgp peers synchronize will
> deny my originated prefixes coming back to due to = DENIED due to: AS-PATH
> contains our own AS;
>
> So therefore there is no risk if I redistribute bgp into ospf of double
> redistribution as the ebgp boundary would deny any originally originated
> prefixes in the first instance?
>
> in summary, I am using network statements to control ospf>bgp and bgp>ospf
> is using redistribute keyword with tag<as number> and I can see in ospf rib
> on internal devices only the tagged prefixes which I would expect.
>
> I have seen some examples using bgp community to tag & deny but this is
> only when using mutual redistribute command under both processes.
>
> Best Regards
>
> Tony
>
>
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CCIE #35470
(Routing and Switching)
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