Re: Newbe question - Relevance of OSPF

there is an old RFC about OSPF and BGP with synchronization and same router
ids

http://www.rfc-editor.org/rfc/rfc1403.txt

3. BGP Identifier and OSPF router ID

   The BGP identifier MUST be the same as the OSPF router id at all
   times that the router is up.

there is an RFC to send that to the Historic Status though:

http://tools.ietf.org/html/rfc3166

And the OSPF Router ID is an extended community in MBGP, but having them
match, you cannot have the same router id on two routes, it will complain
and not work...
PE1#sh bgp vpnv4 unicast all 10.1.1.0
BGP routing table entry for 100:1:10.1.1.0/24, version 27
Paths: (1 available, best #1, table vpn1)
Flag: 0x820
  Advertised to update-groups:
        1
  Local
    192.168.1.2 from 0.0.0.0 (150.1.1.1)
      Origin incomplete, metric 110, localpref 100, weight 32768, valid,
sourced, best
      Extended Community: RT:100:1 OSPF DOMAIN ID:0x0005:0x000003E80200
        OSPF RT:0.0.3.232:2:0 OSPF ROUTER ID:192.168.1.1:0
      mpls labels in/out 21/nolabel

 --
Garry L. Baker

"With sufficient thrust, pigs fly just fine..." - RFC 1925

On Tue, May 3, 2011 at 4:33 PM, Jonathan Smitthers <jsmitthers2011_at_gmail.com
> wrote:

> Hi,
>
> I am a new member so please excuse the question if it is too easy or
> already
> been answered 100's of times.
>
> Normally the OSPF router id is only locally significant. But I seem to
> recall reading that the router ID's must match through an MPLS connection.
> Why? That makes no sense at all! Is the router ID transmitted through
> MPLS?
>
> I appreciate the help and look forward to studying with all of you. Today
> is day 1 of a long journey!
>
> Jonathan Smitthers
>
>
> Blogs and organic groups at http://www.ccie.net
>
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Received on Tue May 03 2011 - 17:56:18 ART