[isp-bgp] Re: Traffic coming down "opposite" pipe

[Pete Templin <petelists@...>]

If address space A came from a larger aggregate of provider A, 
announcing the more specific through B only will cause a strong swing 
toward B (and vice versa).

You'll need to get your providers to let you announce your space 
directly to get a rough balance.

Rick Kunkel wrote:

> I have a couple of IP providers and have started running BGP with them.  I
> have a /22 from each of them.
>
> We'll call the providers A and B, and the address space is 10.0.0.0/22 and
> 10.0.4.0/22, respectively.
>
> I'm currently getting a 0.0.0.0/0 route from each of them, and I'm
> currently announcing 10.0.0.0.22 and 10.0.4.0/22 to each of them.
>
> If I go to a looking glass and do a trace or show ip bgp to the provider A
> address space, it goes through provider B.  if I trace or show ip bgp to
> provider B's space, it goes through.  This seems to be almost universal.
>
> Is this because my providers are aggregating my announcment into a larger
> announcement, so the route through the opposite provider always looks more
> specific and hence more attractive?
>
> Any other ideas?
>
> If the aggregation is the suspected prob, can I correct this?  Can I tell
> my providers to stop aggregating my announcement into a larger one?
>
> Thanks,
>
> Rick Kunkel



> To unsubscribe via postal mail, please contact us at:
> Jupitermedia Corp.
> Attn: Discussion List Management
> 475 Park Avenue South
> New York, NY 10016
>
> Please include the email address which you have been contacted with.
>
> ------------------------ANNOUNCEMENT---------------------------------
> ---------------------------------------------------------------------
>         - ISPCON Spring 2004 - Washington DC Hilton & Towers -
>              - The ISP and WISP event - www.ispcon.com -
>         - Where the industry shares its formulas for success!
> ----------------------------------------------------------------------
> ----------------------------------------------------------------------





To unsubscribe via postal mail, please contact us at:
Jupitermedia Corp.
Attn: Discussion List Management
475 Park Avenue South
New York, NY 10016

Please include the email address which you have been contacted with.

------------------------ANNOUNCEMENT---------------------------------
---------------------------------------------------------------------
       - ISPCON Spring 2004 - Washington DC Hilton & Towers -
            - The ISP and WISP event - www.ispcon.com -
       - Where the industry shares its formulas for success!
----------------------------------------------------------------------
----------------------------------------------------------------------