[c-nsp] ASR100x route tables sanity check

[Gert Doering]

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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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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