Heads up: Long AS-sets announced in the next few days

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On 2 Mar 2005, at 08:09, Christopher L. Morrow wrote:

>
> On Wed, 2 Mar 2005, Hank Nussbacher wrote:
>
>>
>> At 02:49 AM 02-03-05 +0100, Daniel Roesen wrote:
>>> On Wed, Mar 02, 2005 at 01:27:31AM +0000, James A. T. Rice wrote:
>>>> What exactly are you attempting to do here? Those announcements  
>>>> will get
>>>> dropped on the floor at least in this AS right away:
>>>>
>>>> route-map peers-in deny 5
>>>>  match as-path 109
>>>
>>> AS-Sets, not AS-Paths...
>>
>> An example of which I received recently:
>> Feb 27 19:54:16: %BGP-6-ASPATH: Long AS path 20965 1299 3320 15589  
>> 15589
>> 5397
>> {33,109,145,293,559,816,1103,1273,1275,1752,1853,1930,2042,2200,2497,2 
>> 500,2914,3257,3265,3333,3352,3425,3549,4691,4697,4716,4725,5511,5539,5 
>> 609,5623,6175,6435,6453,6762,6830,6939,7580,7660,8447,8472,8763,9264,1 
>> 0566,12779,12793,12859,13944,14277,15897,17715,17965,24136,24895,25358 
>> ,29377,29686,31103,32266}
>> received from 2001:798:201B:10AA::1: More than configured MAXAS-LIMIT
>
> different, but related to:
> Feb  1 20:47:01.608: %BGP-6-ASPATH: Long AS path  3356 6770
> 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282  
> 8282
> 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282  
> 8282
> 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282  
> 8282
> 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282  
> 8282
> 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282  
> 8282
> 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282  
> 8282
> received from x.y.a.b: More than configured MAXAS-LIMIT
>
> hey, 8282/Fido, perhaps you don't really need a 100 as as-path? :)

That was an embarrassing and painful week which I never wish to repeat,  
but related to a "feature" of OpenBGPD which has now been resolved.  
(Thanks Henning and Peter :)

As a result of this I know a large number of companies have now  
instigated a max prefix length of 100 .... way too many Cisco's barfed  
on the 124+ lengths.



>
> -Chris
>
>
Kindest Regards

Jon Morby

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