If your using Cisco hardware make sure that the IOS versions used on
both sides support 8 next-hops for load balancing.
12.3(9) on a 7206 only supported 6 in one situation, and thus the
Juniper on one end forwarded over all 8 T1's where the 7206 only
forwarded over 6.
From my research at the time it appears that the number off next-hops
supported varied by IOS ver.
-C