more-specifics via IX

Wed Oct 17 23:06:48 UTC 2007

On 15 Oct 2007, at 03:49, Iljitsch van Beijnum wrote:

>
> On 15-okt-2007, at 7:09, Bradley Urberg Carlson wrote:
>
>> There is a customer's customer who is advertising more-specifics  
>> at the IX (and using a different source AS, to boot).  I can think  
>> of a couple ways to prevent hearing these, but thought I should  
>> ask for suggestions first.
>
> What exactly is the problem?

well.. the problem of course is that you pull in the traffic from the  
aggregate transit prefix which costs you $$$ but then you offload it  
to the customer via a peering link for which you are not being paid

its a pain but you cant stop the customer from doing it.. you can  
however filter your customers prefix at the IX (an ASN filter would  
be easiest)

if you think it is malicious, you may want to hit them with something  
official (IANAL)

Steve