From: Volkov, Dmitry (IDS Canada) (dmitry_volkov@ml.com)
Date: Wed Oct 15 2003 - 19:08:58 GMT-3
How would "as-set" help here ?
R2 & R1 are in the same AS.
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> ccie2b@mailandnews.com
> Sent: Wednesday, October 15, 2003 5:41 PM
> To: ccielab; Ken.Farrington@barclayscapital.com
> Subject: RE: BGP Route-Map Question.
>
>
> Can as-set be used in this case instead of route-map:
>
> aggregate-address 142.220.0.0 255.255.0.0 summary-only as-set
>
> - AP
>
> >===== Original Message From Ken.Farrington@barclayscapital.com =====
> >+--------------+
> >| AS1 |
> >| +----+ |
> >| | R2 | |
> >| +----+ |
> >| | |
> >| | |
> >| | |
> >| +----+ |
> >| | R1 | |
> >| +----+ |
> >| | |
> >+------|-------+
> > |
> >+------|--------+
> >| +----+ |
> >| | R3 | |
> >| +----+ |
> >| AS2 |
> >+---------------+
> >
> >
> >Simple BGP Scenario/
> >
> >I have multiple routes being asvertised via BGP from R2
> throught the ASs
> >I want to summarise the routes to one single route on R1 so
> it advertises
> >as summary to R3 in AS2.
> >
> >I also, want to stop this summary from being advertised back
> into AS1.
> >I can do this with a neighbor route map, but which route-map
> is correct.
> >
> >They both work, and I am panicing becuase what they may ask
> in the lab, I
> >may do
> >one way and they expect another.
> >
> >
> >Many thx in advanced for any tips
> >Ken
> >
> >
> >!
> >router bgp 620
> > no synchronization
> > bgp log-neighbor-changes
> > bgp confederation identifier 600
> > aggregate-address 142.220.0.0 255.255.0.0 summary-only
> > neighbor 22.22.22.22 remote-as 620
> > neighbor 22.22.22.22 ebgp-multihop 255
> > neighbor 22.22.22.22 update-source Loopback0
> > neighbor 22.22.22.22 route-map NO-SUMMARY out
> > neighbor 33.33.33.33 remote-as 500
> > neighbor 33.33.33.33 ebgp-multihop 255
> > neighbor 33.33.33.33 update-source Loopback0
> >!
> >access-list 18 permit 142.220.0.0
> >!
> >route-map NO-SUMMARY deny 10
> > match ip address 18
> >!
> >route-map NO-SUMMARY permit 20
> >
> >
> >----------------or---------------------
> >
> >access-list 18 deny 142.220.0.0
> >access-list 18 permit any
> >
> >!
> >route-map DENY-SUMM permit 10
> > match ip address 18
> >!
> >
> >
> >
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