Re: OER/PfR with BGP for inbound load sharing

["Dobbins, Roland" <rdobbins () arbor net>]

On Jul 14, 2010, at 9:55 PM, Dylan Ebner wrote:

>  I should look for other options to balance my inbound traffic. 


Beyond the binary choice to advertise or not to advertise a given prefix via a given peer/upstream and/or any TE 
policies your peers/upstreams may support via community/attribute tagging, you've really no control over inbound 
traffic path selection.  You can prepend, but whether other networks honor it or ignore it - or if they do honor it, 
*how* they honor it - is entirely beyond your control.

So, vendor marketing claims aside, the concept of 'load-balancing' inbound traffic isn't really a valid one.

The only actual path-selection control you have is over your outbound traffic, and that only for a single hop beyond 
your network, into each of your peers/upstreams.  What happens after that is beyond your control, as well.

-----------------------------------------------------------------------
Roland Dobbins <rdobbins () arbor net> // <http://www.arbornetworks.com>

    Injustice is relatively easy to bear; what stings is justice.

                        -- H.L. Mencken