[c-nsp] cef load-sharing per-packet bizzare behavior
rodunn at cisco.com
Thu Oct 7 10:45:16 EDT 2004
Trying to catch back up...
Version of code?
Sounds like cosmetic bug.
On Tue, Sep 21, 2004 at 11:31:16AM +0300, Yasser Aly wrote:
> Interesting feedback you provide. I have a situation that appears to be
> similar to me. Having a FastEthernet interface on 7507 where DCEF is
> applied. The Fast Ethernet has a sub-interface running dot1Q. Doing show
> interface f1/1/0 shows traffic only in the input rate counter, output rate
> counter is always Zero, this is not true as monitoring this interface via
> MRTG shows traffic flow in both directions.
> Any thoughts ?
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Rodney Dunn
> Sent: Wednesday, September 15, 2004 11:40 PM
> To: Pete Templin
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] cef load-sharing per-packet bizzare behavior
> Yes....fifo is always distributed once dCEF is enabled.
> That's why I say make them all FIFO unless you know you need some fancy
> queueing of some sort and that way you don't have to worry about it.
> 99% of the time the customers don't even notice a difference with WFQ off
> vs. fifo but I have seen a couple instances where it is noticeable with low
> speed links.
> Anything above 2Mbps is FIFO by default anyway so you are good to go on
> those. It's the 2 Mbps or less that bites.
> On Wed, Sep 15, 2004 at 03:28:42PM -0500, Pete Templin wrote:
> > Rodney Dunn wrote:
> > > Oh..and one thing I did just remember during lab testing.
> > >
> > > Make sure if these are T1's you either do:
> > > fair-queue
> > > or
> > > no fair-queue
> > >
> > > so it's no doing RSP based WFQ and the packets are dCEF switched.
> > Any tricks for other media?
> > What should Ethernet interfaces show as their queueing strategy (i.e.
> > is "fifo" distributed)?
> > Pete
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