Hi Group, 
    This has been nagging at me for about a week now.
I have 2 x 2500 routers connected via serial cables.
S0 -> S0 and S1 -> S1. I have a PC connected to one
router and my Laptop to the other.

The fast-switching cache is enabled on the four serial
interfaces and hence per/destination load balancing.

However, per/dest load balancing is only taking place
in the forward path to the PC. On the return path I
can see per/packet i.e S0/S1/S0/S1 taking place.

Why should this be ?

PS : I can reproduce this effect by pinging from the
Workstation to the Laptop also.

using debug ip packet. and cleared serial counters to
verify debug results.

I wonder if it is something to do with Ping not using
a transport. I'll just try an FTP to check.

Regards,

Phil.


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