Mailing List Archive: nsp: force10

the throttles counter

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fungk124_2hot at hotmail

Dec 19, 2006, 10:43 PM

Post #1 of 3 (3237 views)
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the throttles counter

On some interfaces in my E300 the throttles counter had incremented (applox. 30times/sec).
What does this counter mean and what can cause this counter to increment?

E300, 6.5.1.8, 48-port 10/100/1000Base-T line card (EF3)

Thanks,
keio
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awaite at pandora

Dec 20, 2006, 5:49 AM

Post #2 of 3 (3011 views)
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the throttles counter [In reply to]

Those are ethernet flow-control frames, and are usually generated by a
slower speed device on the switching fabric receiving packets faster
than it can handle. They're not necessarily bad, but 30/sec seems a
little fast. Try to isolate the issue to a single host or hosts, and put
them on their own broadcast domain.

Adam Waite
Network Engineer
Pandora Media

o k wrote:
>
> On some interfaces in my E300 the throttles counter had incremented
> (applox. 30times/sec).
> What does this counter mean and what can cause this counter to increment?
>
> E300, 6.5.1.8, 48-port 10/100/1000Base-T line card (EF3)
>
>
>
> Thanks,
> keio
>
> ------------------------------------------------------------------------
> $B:G?7$N(B Windows Live $B%a%C%;%s%8%c!<!#(B $B:#$9$0%H%i%$!*(B
> <http://promotion.live.jp/messenger/>
> ------------------------------------------------------------------------
>
> _______________________________________________
> force10-nsp mailing list
> force10-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/force10-nsp
>

fungk124_2hot at hotmail

Dec 21, 2006, 12:47 AM

Post #3 of 3 (3009 views)
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the throttles counter [In reply to]

Thanks Adam,

I have a NAS head with 4 NICs connected to E300.A few days ago, the NAS head had got stuck during boot up. At that time the throttles couter was imcrementing, so the NAS seemed to keep sending the flow-control frames for a few hours. E300 would have recieved 31*4 pause frames per second continually.
When it occured, E300 showed strange behaviour. I rebooted the NAS and the throttles counter stopped incrementig. After that, E300 began to work fine.

Thanks again.
Keio

> Date: Wed, 20 Dec 2006 05:49:25 -0800> From: awaite at pandora.com> To: fungk124_2hot at hotmail.co.jp> CC: force10-nsp at puck.nether.net> Subject: Re: [F10-nsp] the throttles counter> > Those are ethernet flow-control frames, and are usually generated by a> slower speed device on the switching fabric receiving packets faster> than it can handle. They're not necessarily bad, but 30/sec seems a> little fast. Try to isolate the issue to a single host or hosts, and put> them on their own broadcast domain.> > Adam Waite> Network Engineer> Pandora Media> > o k wrote:> >> > On some interfaces in my E300 the throttles counter had incremented> > (applox. 30times/sec).> > What does this counter mean and what can cause this counter to increment?> >> > E300, 6.5.1.8, 48-port 10/100/1000Base-T line card (EF3)> >> >> >> > Thanks,> > keio> >> > ------------------------------------------------------------------------> > $B:G?7$N(B Windows Live $B%a%C%;%s%8%c!<!#(B $B:#$9$0%H%i%$!*(B> > <http://promotion.live.jp/messenger/>> > ------------------------------------------------------------------------> >> > _______________________________________________> > force10-nsp mailing list> > force10-nsp at puck.nether.net> > https://puck.nether.net/mailman/listinfo/force10-nsp> > >
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