Adam, I had an identically configured 2611XM in service a couple years ago. The CPU maintained 70-90% during peak times. At the time that was with about 8Mbps passing through it. One night when the router reached just under 10Mbps the CPU pegged at 100% (usually I only see Cisco IOS devices report 99% but this one said 100%) and fell off the network (I'm assuming that OSPF timed out). The ensuing flood of packets from behind the router (cable modem network with about 400 users) easily exceeded the pps of the router and kept the CPU pegged generating ICMP Destination Unreachables. Even consoling into the poor thing was pointless as it took a couple minutes to output a single character to the CLI. It had 2 ACLs of about 40 lines combined and was running OSPF with one neighbor (50 routes). I had a replacement 2821 overnighted to me the next day and I replaced the 2611XM that night. The performance difference was very noticeable, even with the same approximate throughput. The 2611XM introduced significant delay. IMHO the 10Mbps ceiling is absolute if not exceedingly generous.
The 2611XM is good as a CE with a couple T1s. Beyond that toss it on your pile of 2500s and go buy an ISR. Justin Adam Greene wrote: > Hi, > > I'm trying to determine what kind of throughput we can expect from a 2611XM > currently in production (IOS 12.3(24), 128MB RAM). The router is doing eBGP > to two peers but only advertises one network and receives default routes > only. Other than that it's plain vanilla. > > Cisco's router performance guide rates this router at 10.24Mbps (is that one > direction at a time or bidirectional, I wonder) with an avg packet size of > 64bytes. Judging from the # of packets and the # of bytes transferred on the > unit's WAN interface, I'm calculating average packet size at about 154bytes > per packet. > > Based on these specs, would it be realistic to expect the router could push > about 25Mbps aggregate (for example, 12.50Mbps in both directions > simultaneously)? > > Thanks for your insight. _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/