AS-PATH filters and whois databases?

AS-PATH filters and whois databases?

Post by Ilya Varlashki » Tue, 14 Mar 2000 04:00:00



Hello

I wonder if anyone of you builds as-path filters automatically using AS-objects
from either RIPE or similar databases. In the database object you can see
something like 'as-out: to AS555 AS1 AS2 AS3' but how to check what path's
chould be exported/imported, i.e. either

^555_1$
^555_2$
^555_3$

or

^555_1_2$
^555_1_3$

could match database attribute mentioned above. So how one distinguish which
filter to apply? Is there any convention?

If there is no way to implement the scenario above, how do you automate
building your as-path filters?

Thanks in advance!

--
Ilya Varlashkin

 
 
 

AS-PATH filters and whois databases?

Post by Rene A » Fri, 17 Mar 2000 04:00:00




Quote:>I wonder if anyone of you builds as-path filters automatically using AS-objects
>from either RIPE or similar databases. In the database object you can see
>something like 'as-out: to AS555 AS1 AS2 AS3' but how to check what path's
>chould be exported/imported, i.e. either

>^555_1$
>^555_2$
>^555_3$

>or

>^555_1_2$
>^555_1_3$

Match on _(555|1|2|3)$ from that particular peer.  So you dont have to
concern whos AS is behind what other AS.

/rene