[c-nsp] ASR100x route tables sanity check

[Gert Doering]

Hi,

On Sat, Feb 04, 2012 at 03:16:18PM +0100, ?ukasz Bromirski wrote:
> ESP5 on the other hand can store approx. 512k IPv4 routes *OR* 128k
> IPv6 routes. For a mix of these, rule of thumb is pretty obvious - you
> take 4 IPv4 routes for each 1 IPv6 route installed. Please note however
> hardware specific checks like the one found on for example 6500/7600
> units with carving of TCAM space are not present here - the mix will
> be dynamic.

What happens if ESP runs out of FIB slots?  

On a 6500, the result is not pretty (falls over to software forwarding
for some prefixes, and will never recover if the number of routes in the
FIB falls under the threshold again).

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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