From: AP (ccie2b@mailandnews.com)
Date: Wed Oct 15 2003 - 18:40:44 GMT-3
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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This archive was generated by hypermail 2.1.4 : Mon Nov 24 2003 - 07:53:02 GMT-3