> > I can understand how a virus like Welchia can affect a flow-based > > architecture like Extremes. I was under the impression that CEF enabled > > Cisco gear wouldnt have this problem, but Cisco has instructions on their > > webpage on how deal with it and cites CPU usage as the reason. With CEF I > > thought the CPU wasn't involved? CEF is perhaps differently implemented on > > different plattforms? > > I think CEF in HW is the key, ASIC based and not Flow based. > I'm not all-knowlegable on which platforms do this, but the 7500, 12000, > 2948G-L3, 4908 have it.
Yup. We have 6509s with Sup2/MSFC2/PFC2, and have had no problems with ICMP in connection with recent virus/worm attacks. Oh yeah, we also find the 6509s work very well as routers. Full routing tables, etc. YMMV. Steinar Haug, Nethelp consulting, [EMAIL PROTECTED]