From: Scott Ralph (scottralph@gmail.com)
Date: Wed Sep 27 2006 - 14:24:34 ART
Hi
Are you using a IGP ( OSPF, EIGRP) also and if so is syncronization on in
BGP configuration, it not by default.
Scott
On 9/27/06, Brian Dennis <bdennis@internetworkexpert.com> wrote:
>
> From the DocCD:
>
> Origin Attribute
>
> The origin attribute indicates how BGP learned about a particular route.
> The origin attribute can have one of three possible values:
>
> * IGP-The route is interior to the originating AS. This value is set
> when the network router configuration command is used to inject the
> route into BGP.
> * EGP-The route is learned via the Exterior Border Gateway Protocol
> (EBGP).
> * Incomplete-The origin of the route is unknown or learned in some
> other way. An origin of incomplete occurs when a route is redistributed
> into BGP.
>
>
> http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/bgp.htm#1020595
>
>
> HTH,
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> bdennis@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> msaeed@uaeu.ac.ae
> Sent: Wednesday, September 27, 2006 9:25 AM
> To: ccielab@groupstudy.com
> Subject: BGP Question
>
> Hi all,
>
> I advertised 174.1.1.0/24 network in BGP on R1, when I see sh ip bgp
> 174.1.1.0 on R4 it mentions Origin IGP, can any one tell me why origin
> is IGP when route is advertised and learned via BGP? Both R1 and R4 are
> in same AS of BGP.
>
> Rack1R4#sh ip bgp 174.1.1.0
> BGP routing table entry for 174.1.1.0/24, version 17
> Paths: (1 available, best #1, table Default-IP-Routing-Table) Not
> advertised to any peer Local
> 174.1.145.1 from 174.1.145.1 (150.1.1.1) Origin IGP, metric 0, localpref
> 100, valid, confed-internal, best
>
> Regards,
>
> Mohammad Zahid Saeed
>
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-- Scott Ralph
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