[rbak-nsp] bgp bestpath igp-metric ignore

[Yuri Shefer]

And you will need to have SEOS 12.1.1.5, which is the latest SEOS release.
Just verified on 11.1 - there is no such command available there.


On Wed, Nov 6, 2013 at 9:20 AM, Yuri Shefer <shefys at gmail.com> wrote:

> Hi Jim,
>
> When separate BGP speakers are configured to announce the best path and
> diverse path, and IGP cost is used to select the best path, if costs differ
> between the BGP speakers, one speaker's best path might be the other's
> diverse path. In such cases, both speakers announce the same path, failing
> to achieve the desired path diversity. The "bestpath igp-metric ignore"
> command causes the router to discard the IGP cost and restores path
> diversity.
>
> Example:
>
> context bgp
> !
>  router bgp 123
>   address-family ipv4 unicast
>    bestpath igp-metric ignore
>
>
>
> On Wed, Nov 6, 2013 at 6:17 AM, Jim Tyrrell <jim at scusting.com> wrote:
>
>> Below was the 'show bgp route 0.0.0.0/0'.  Here is the show ip route:
>>
>> #sh ip route 0.0.0.0/0
>>     Best match Routing entry for 0.0.0.0/0 is 0.0.0.0/0 , version 30320
>>     Route Uptime 01:37:15
>>     Paths: total 1, best path count 1
>>
>>     Route has been downloaded to following slots
>>       iPPA: 01 04
>>
>>     Path information :
>>
>>       Active path :
>>       Known via bgp 6510, type-Internal BGP, distance 200, metric 0,
>>       Tag 0, Next-hop 192.168.9.123, NH-ID 0x31200008, Advertising
>> router 192.168.9.11
>>
>> Jim.
>>
>> On 06/11/2013 13:18, Olivier Benghozi wrote:
>> > Hi Jim,
>> > I suppose you already checked this, but who knows...
>> > What does say a show ip route for these ones ? :)
>> >
>> >
>> > Le 6 nov. 2013 à 13:46, Jim Tyrrell <jim at scusting.com> a écrit :
>> >
>> >> Is it possible to configure BGP to ignore the IGP metric for bestpath
>> >> selection?  I have configured BGP with 'multi-paths internal 2' but BGP
>> >> is only using a single path as the IGP metrics to the 2 route
>> reflectors
>> >> are different:
>> >>
>> >> Local
>> >>  Nexthop 192.168.9.123 (11), peer 192.168.9.11 (192.168.9.123), AS 6510
>> >>  Origin IGP, localpref 10000, med 0, weight 100, internal, best
>> >>  Originator: 192.168.9.123, Cluster list: 192.168.9.11
>> >>  Community: 6510:0
>> >>
>> >>
>> >> Local
>> >>  Nexthop 192.168.9.121 (12), peer 192.168.9.13 (192.168.9.121), AS 6510
>> >>  Origin IGP, localpref 10000, med 0, weight 100, internal
>> >>  Originator: 192.168.9.121, Cluster list: 192.168.9.13
>> >>  Community: 6510:0
>> >>
>> >> In Cisco you can configure 'bgp bestpath igp-metric ignore', but I cant
>> >> see this or an equivalent on the SmartEdge? (SEOS v11).  Does this
>> >> option exist or an alternative that will achieve this?
>> >
>>
>>
> --
> Kind regards,
> Yuri
>



-- 
Best regards,
Yuri
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