[c-nsp] Speed problem and router seems to sluggish

[Matt Nichols]

You are in FIB exception, which means you've overflowed the FIB TCAM. The only way around this is to reduce the number of prefixes, then reload to recover, or upgrade all PFCs/ DFCs to XL-based daughtercards and reload

Thanks

Matt

On Jun 27, 2010, at 7:03 PM, Rudy Setiawan wrote:

> Hi Matt,
> 
> the destination address varies but I just pick a random IP address to do the cef lookup:
> 
> border2#show mls cef exception status
> Current IPv4 FIB exception state = TRUE
> Current IPv6 FIB exception state = FALSE
> Current MPLS FIB exception state = FALSE
> 
> border2#sh plat  hardware pfc mode
> PFC operating mode : PFC3B
> 
> border2#
> border2#show mls cef lookup 216.45.67.8
> 
> Codes: decap - Decapsulation, + - Push Label
> ***** FIB is in exception state for IPv4 unicast *****
> Index  Prefix              Adjacency
> 189177 216.45.66.0/23      Te2/1           , 0021.a0ef.268c
> 
> Weird on the FIB is in exception state...does that mean it is software switched?
> 
> Thanks,
> Rudy
> 
> On Mon, Jun 28, 2010 at 3:12 AM, Matt Nichols <nicholsm at cisco.com> wrote:
> That is an interesting point. Ca you get the output of
> 
> sh mls cef lookup x.x.x.x where x.x.x.x is the ip address of the destination you see performance problems with.
> sh mls cef exception status
> sh platform hardware pfc mode
> 
> Thanks
> 
> Matt
> 
> On Jun 27, 2010, at 10:52 AM, Gert Doering wrote:
> 
> > Hi,
> >
> > On Mon, Jun 28, 2010 at 12:41:46AM +0700, Rudy Setiawan wrote:
> >> Would the low TCAM of 239k (due to DFC3B daughter card) have something to do
> >> with this weird traffic?
> >
> > If your router is carrying full Internet routing tables (>330k), most
> > definitely.
> >
> > gert
> > --
> > USENET is *not* the non-clickable part of WWW!
> >                                                           //www.muc.de/~gert/
> > Gert Doering - Munich, Germany                             gert at greenie.muc.de
> > fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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> 
>