[AusNOG] Asymmetric BGP question

[Nick @ Deltaband]

Hi,

So i have this BGP problem...

Traffic going between AS1 and AS2 has an asymmetric path of latency and doom.

On the outbound path it goes something like this:

AS1 > Transit Provider(AS1) > Equinix Sydney > AS2 - Perfect all is
kept nicely on this side of the pacific.

The return path is like this:

AS2 > Transit Provider(AS1) > AS1 - The transit provider peers
directly with AS2. Great. The problem is, it's in the US. So the
traffic on the return path is laggy as hell because it's got to cross
the pacific twice.

You'd think AS2, that's predominately based in Australia, would be
localpref'ing routes learnt from Australian IX's over US IX's but I
guess they probably have their reasons not to.

My question is: Other than asking the transit provider for AS1 to add
an AS path prepend to the route being advertised to AS2 in the US, do
I have any other options?

MED would only work if the transit provider peered with AS2 directly
in Aus as well right? Rather than via Equinix?

Cheers,

Nick