The Catalyst 4948 was brought to my attention as a potential collocation aggregation device; with a specific requirement of bidirectional policing per port.
I have spent quite a bit of time on Cisco and Google trying to find out whether policing (independent of marking/classifying) is performed in hardware or software. I get some hints that it is hardware, but nothing the says so outright. With a 266MHz processor, it doesn't seem like there is a lot of capacity for bandwidth management. In an ideal/extreme case, I'd like to be able to have hosts/networks attempt to push 1Gbs per port and have it throttled to 1Mbs each without cratering the device. More realistically, 24 ports populated, each set to 10-500Mbs per customer (port). I'm looking at a distributed device rather than modular for several reasons including cable management (a nightmare at high port density) and incremental expansion (makes the finance people less upset than dropping a full chassis in with minimal utilization). As part of the bigger picture; I'm looking at 7206VXR/G2 at the border for GigE upstreams and BGP endpoints funneled to a pair of 7600/Sup720 for redundant "glue", feeding multiple legacy aggregation devices and new, bandwidth managed, ethernet customers. Current utilization is ~300Mbs both in and out, but we now have customers looking for 100-300Mbs CIR. As an aggregation device, I'm also looking for OSPF, BGP, HSRP, and potentially Layer-3 ACLs. There are several other vendors touting ASIC-based policing but Cisco isn't as informative. Thanks, Rick _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
