I have a pair of routers running the old AIM-COMPR2-V2 cards and a pair running the newer NCE AIM-TPO-1s.
The line for both is 64K. The pair running the old style ping times for standard and 1500bytes pings remains constant. With the NCE pair 1500Byte pings take 8 times longer.
The NCE shows good compression stats. Using compress-sctp
Any ideas why latency is increasing with packet size on the NCE pair but not on the old AIM modules?