proxy-aggregation of geoff huston

Peter Lothberg roll at stupi.se
Tue Mar 20 21:47:08 UTC 2001


> As mentioned in the ptomaine WG...
> 
> ip as-path access-list 14 permit _1221_
> 
> route-map TELSTRA permit 5
>  descr proxy-aggregate the lazy australian who says it can't be done
>  match as-path 14
> 
> router bgp 1880
>  aggregate-address 192.36.0.0 255.255.0.0 as-set suppress-map TELSTRA
> 
> ^Z
> 
>    Network          Next Hop            Metric LocPrf Weight Path
> *> 192.36.0.0/16    0.0.0.0                       100  32768 {1257,2874,702,2836,1755,13297,1653,2831,6782,5556,2833,8434,8674,1800,2865,5574,2841} ?
> *  192.36.1.0       198.67.142.173                 90      0 1800 1257 i
> * i                 194.68.128.21                 100      0 1257 i
> *                   192.108.199.209               100      0 1883 1800 1257 i
> *>                  194.71.10.3                            0 1257 i
> *                   194.68.132.21                          0 3220 1257 i
> *                   192.36.147.30                 100      0 1755 1257 1257 i
> *                   192.36.147.11                          0 1800 1257 i
> *                   192.36.147.8                           0 1800 1257 i
> *                   192.36.147.1                           0 1877 1257 i
> *  192.36.3.0       198.67.142.173                 90      0 1800 1239 5511 2874 ?
> * i                 194.68.128.17                 100      0 2874 ?
> *                   192.108.199.209               100      0 1883 2874 ?
> *                   194.71.10.3                            0 1257 2874 ?
> *                   194.68.132.17                          0 3220 2874 ?
> *>                  194.68.132.17                          0 2874 ?
> *                   192.36.147.30                 100      0 1755 5511 2874 ?
> *                   192.36.147.11                          0 1800 1239 5511 2874 ?
> *                   192.36.147.8                           0 1800 1239 5511 2874 ?
> ...
> 


But, problem with them is what the are doing is traffic engineering to the third hops
behind their transits. That s why they need the deagreggated routes.

-P



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