Sniffing split connections

Hi all-

Here's the problem I'm having:

I have a client site that has two physical connections from its ATM
switch that connect to two different providers. The ATM switch uses
both connections all the time (not set up as a failover.) The ATM
switch at the site will not let me mirror the ports so I can't sniff
there... and after the two providers, the connection is too fast for
my equipment. I am using Snort 2.3.2 on PowerEdge 1750's. If I place a
sniffer at both provider A and provider B, is there a way I can
reassemble the traffic so I can see complete sessions? The two
providers are on different sides of town.

               |--------|PROVIDER A|\
Client Site|                          |-----------|INTERNET|
               |--------|PROVIDER B|/

Thanks very much,

Chris

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