From: mcaplan.cs@xxxxxxxxxxxxxxx
Date: Wed May 16 2001 - 10:17:56 GMT-3
Lachlan
Thanks for that. Yes I can see that now.
Dam stupid of me not to have spotted it from the routing table.
I've spent so long thinking and playing with the BGP routing table, that the
IP routing table has taken a bit of a back seat :-)
Cheers
Mark
> ----------
> From: Lachlan Kidd[SMTP:lkidd@netstarnetworks.com]
> Reply To: lkidd@netstarnetworks.com
> Sent: Mittwoch, 16. Mai 2001 14:44
> To: mcaplan.cs@clearstream.com; ccielab@groupstudy.com
> Subject: RE: BGP Metrics
>
> Hi Mark,
> The metric's will be inherited from OSPF that is running as an IGP
> in the
> example. I'm not quite sure under what circumstances it happens, or
> doesn't
> but that's where they come from.
> HTH,
> Lachlan
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> mcaplan.cs@clearstream.com
> Sent: Wednesday, 16 May 2001 9:28:PM
> To: ccielab@groupstudy.com
> Subject: BGP Metrics
>
>
> Hi,
>
> I've set up the config shown in Halibi pg 326. The BGP table for RTA is
> shown below. My question is, where does the metric value of 11 come from ?
> How is it calculated ? The routes that show a metric of 11 are locally
> originated (as can be seen from their weight), but the router has
> determined
> the next hop to be another router within the AS - ie RTF. This is fine,
> but
> I dont understand where the metric value came from.
>
> Halabi's book shows these routes with a metric of 20. Either way I'de be
> interested in how local metrics are determined, as opposed to being set in
> route maps.
>
> BGP table version is 8, local router ID is 172.16.220.1
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> * i172.16.1.0/24 172.16.1.2 0 100 0 i
> *> 0.0.0.0 0 32768 i
> * i172.16.10.0/24 172.16.1.2 0 100 0 i
> *> 172.16.1.2 11 32768 i
> * i172.16.65.0/26 172.16.1.2 0 100 0 i
> *> 172.16.1.2 11 32768 i
> *> 172.16.220.0/24 0.0.0.0 0 32768 i
> * 192.68.10.0 172.16.20.1 0 1 2 i
> *>i 172.16.1.2 0 100 0 2 i
> *> 192.68.11.0 172.16.20.1 0 0 1 i
>
>
>
> The configs can be seen in Halibi's book pg 327-329
>
> Cheers
>
> Mark
>
>
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