[c-nsp] VSS to vPC - vPC to Etherchannel

[Joseph Hardeman]

Hi Andrew,

No actually they are configured as "mode on" no LACP.  I spoke with a CCIE
a couple of years ago and he told me that use mode on from switch to switch
and lacp from switch to server so thats what I am putting in.

Any thoughts on why the 2960's ports would turn up even with the 5010's
ports shut down?

Joe

On Sat, Mar 16, 2013 at 12:30 AM, Andrew Miehs <andrew at 2sheds.de> wrote:

> How did you configure the port channels? I assume you have configured them
> to use lacp?
> Show etherchannel summary shows?
>
>
> Sent from a mobile device
>
> On 16/03/2013, at 13:14, Joseph Hardeman <jwhardeman at gmail.com> wrote:
>
> > Hi Everyone,
> >
> > I saw a very strange thing tonight while putting some vPC ports to a some
> > access switches.  So my Topology is a VSS stack to a pair of 5010 over
> vPC.
> > I then have an active vPC from the 5010's to one 2960G port-channel.  I
> > now have this connected to several other 2960G's that are connected over
> > port-channels and I was wanting to connect those 2960's directly to the
> > 5010 over vPC,  Just like the first one is, for failover and redundancy.
> > Now with the ports on the 5010 in shutdown and the port channel in
> > shutdown, as soon as I apply the config on the port connected to a 2960,
> > the ports on the 2960 go from down/down to up/up even though the 5010
> ports
> > are shutdown.
> >
> > So several questions, why would the ports on the 2960's come up and what
> > can I check to see if something else is happening.  Second, is this path
> a
> > support configuration?  I mean, I have been told that its not "Supported
> By
> > Cisco" so that is their way of saying "weird stuff will happen".
> >
> > If I can't have vPC going to my VSS engines and then on the other side
> have
> > vPC going to another switch, then there goes the benefit of using VSS or
> > vPC and I might as well have just put everything down single links and
> not
> > even worried about providing instant failover on the chance I loose one
> of
> > the VSS Engines or a vPC switch.
> >
> > Any thoughts on what I am seeing?  I haven't seen anything like it
> before.
> >
> > Thanks
> >
> > Joe
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