[c-nsp] C6K_MPLS_LC-SP-5-TCAM_EXCEPTION: TCAM exception occured for MPLS, traffic will be software switched

Gert Doering gert at greenie.muc.de
Wed Jun 4 12:35:15 EDT 2014


Hi,

On Wed, Jun 04, 2014 at 05:21:13PM +0100, Nick Hilliard wrote:
> On 04/06/2014 16:39, Antonio Soares wrote:
> > Usually it doesn't recover by itself
> 
> there's no "usually" - this is an unrecoverable problem and the only option
> is to reboot.

That's what I used to think (it is not "unrecoverable", but Cisco decided
to not implement recovery[*]).  OTOH on SXI "sh mls tcam ex" continued to 
show "true" even after the overflow got fixed, while the OP's 15.1SY
went back to "false".

So maybe someone actually fixed that one :-)

[*] if you can program TCAM "from scratch" at bootup, I don't see why
you couldn't recover by clearing and reprogramming everything... yes, this
would hurt, but much less than a full reboot, or continuing to software-
forward.

gert

-- 
USENET is *not* the non-clickable part of WWW!
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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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