[119589] in North American Network Operators' Group
Re: OT: VSS + MEC - port-channel dynamically cloned?
daemon@ATHENA.MIT.EDU (Ross Vandegrift)
Tue Nov 24 14:00:39 2009
From: Ross Vandegrift <ross@kallisti.us>
Date: Tue, 24 Nov 2009 13:57:20 -0500
To: Leland Vandervort <leland@taranta.discpro.org>
In-Reply-To: <1259045489.12138.5.camel@leland-gandi>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Tue, Nov 24, 2009 at 07:51:29AM +0100, Leland Vandervort wrote:
> Essentially, for all of the MEC connections, the VSS has created a clone
> of the configured port-channel to bind the actual physical connections,
> rather than binding them under the configured port-channel (and suffixed
> the port-channel number with A or B depending on which chassis was first
> to bind).
IOS does this when ethernet channel members cannot join the bundle due
to negotiation mismatch. If the currently active elements are
incompatible with a new element, the A/B interfaces are created.
These are called "secondary aggregators" in IOS-speak.
http://www.cisco.com/en/US/tech/tk389/tk213/technologies_configuration_exam=
ple09186a0080094470.shtml#po1a
--=20
Ross Vandegrift
ross@kallisti.us
"If the fight gets hot, the songs get hotter. If the going gets tough,
the songs get tougher."
--Woody Guthrie
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