Hi, On Sun, Feb 05, 2012 at 12:54:17AM +0800, Mark Tinka wrote: > On Sunday, February 05, 2012 12:36:34 AM Gert Doering wrote: > > > What happens if ESP runs out of FIB slots? > > My SE (and someone from one of the BU's at Cisco) said that > they think the only boxes that stop forwarding traffic > altogether due to congested FIB's are IOS XR boxes.
Ugh. Now that sounds even less graceful than what the 6500 does :(
> All other boxes (IOS) will process look-ups in the control
> plane CPU. This implies IOS XE will work the same way,
> although I have no real evidence of this.
I'm not sure whether I understand IOS XE architecture well enough - but
does it even *have* a packet path to the control plane CPU (which would
imply that the Linux kernel gets to see the packet...?). Interesting.
gert
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