nanog mailing list archives

Re: Extreme BlackDiamond


From: "Tom (UnitedLayer)" <tom () unitedlayer com>
Date: Sun, 12 Oct 2003 23:06:22 -0700 (PDT)


On Mon, 13 Oct 2003, Mikael Abrahamsson wrote:
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.


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