A 2621 (rated at 25k pps*) can handle about 40Mbps of traffic with 1500 byte packets per some testing that I did. (CEF, no access lists, etc.) A 3620 (20-40k pps) does about 75Mbps per someone else's testing. The 2650XM is rated at 40k pps.
So I'd guess that a 2650XM can get fairly close to filling a full-duplex DS3. This assumes they're not doing something goofy with the DS3 module like programming it to limit itself to a certain bandwidth when it detects that it's in a certain router. The router <-> module interface itself could also be a limiting factor.
* All of Cisco's pps ratings are with 64 byte packets.
At last I am getting some numbers. Thanks for that. The particular solution I am looking for involves a point to point DS3 between two locations. Mostly SQL replications, file transfer, web server access are the kind of traffic that is going to traverse the link.
When you said 40 Mbps traffic for the 2621, was it a full duplex or half duplex value ?
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