From: Craig Dorry (chdorry@yahoo.com)
Date: Thu Jun 26 2003 - 10:02:21 GMT-3
I have seen the difference in the forming of the
portchannels when bundling gig interfaces on the
cataly 6500 running native IOS. The problem is with
the keyword silent, the LTL (Local Target Logic)
doesn't get programmed correctly if there is any delay
between the first and last gig being added to the
bundle (or if one gig of a channel bounces). This has
affected many multicast applications on our network
causing the gig etherchannel to block the traffic
instead of forwarding it correctly. Switching to
desirable non-silent (from what I remember this caused
the two devices to send packet over the link before
bundling them) solved that problem with the LTL logic.
--- jfaure@sztele.com wrote:
> But, as you said, if you use mode desirable and
> don't specify any keyword,
> silent is assumed. And, if you use the interfaces
> with this EC config to
> form a Echannel with other pagp capable device, it
> works fine too. I have
> an FasthEtherchannel between two 3550 with this
> config and it seems to work
> properly, it doesn't matter if i put "silent" or
> "non-silent"
>
> I don't see the difference.
>
> Regards
>
>
>
> Juan Faure Ferrer
> email: jfaure@sztele.com
>
> Lmnea de Negocio de Telematica y CC
> Ingeniero de Integracisn de Redes y Sistemas
>
----------------------------------------------------------------------------
>
> SOLUZIONA TELECOMUNICACIONES
> Servicios Profesionales de UNION FENOSA
> Jerez, 3
> 28016 MADRID
> tel 91 579 30 00 fax 91 350 72 83
>
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>
>
>
>
>
> ccie2002@tampa
>
> bay.rr.com Para:
> jfaure@sztele.com,
>
> ccielab@groupstudy.com
> 24/06/03 16:16 cc:
>
> Asunto: Re:
> PagP & non-silent keyword
>
>
>
>
>
>
> >Basically you would use non-silent mode when
> connecting via etherchannel
> to
> another switch, or device that understands and uses
> PAgP. PaGP negotiation
> takes place.
>
> Silent mode would be used for connecting via
> etherchannel to non PAgP
> devices
> such as servers. PaGP is not negotiated
>
> By default if you don't specify non-silent with auto
> or desirable, then
> silent
> mode is used.
>
>
> Hi:
> >
> > I'm reading the 3550 config guide and the notes
> about Etherchannel
> > interfaces. I'm don't see the difference between
> the keywords
> "non-silent"
> > and "silent" for the auto and desirable modes.
> >
> > Anyone can explain the purpose of each one?
> >
> > Regards
> >
> >
> > Juan Faure Ferrer
> > email: jfaure@sztele.com
> >
> > Lmnea de Negocio de Telematica y CC
> > Ingeniero de Integracisn de Redes y Sistemas
> >
>
----------------------------------------------------------------------------
>
> >
> > SOLUZIONA TELECOMUNICACIONES
> > Servicios Profesionales de UNION FENOSA
> > Jerez, 3
> > 28016 MADRID
> > tel 91 579 30 00 fax 91 350 72 83
> >
>
---------------------------------------------------------------------------
> >
> >
> >
>
This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:11:10 GMT-3