Re: OT: Nexus5K/3560

Robert:

There is a mistake in the VPC diagram in the config guide. You cannot do a
vpc from a 5k going down to 2 different chassis-ID. However, you can do
from a 2k to 2 different 5K. That is why you were getting offline. I was
trapped in that too.

Robert Steeneken <r.steeneken_at_gmail.com>
08/11/2009 02:11 PM

To
Ram Shummoogum/Quebec/IBM_at_IBMCA
cc
ccielab_at_groupstudy.com
Subject
Re: OT: Nexus5K/3560

I can't see why not, I did also some tests with VPC between 5K and 2K but
got to many offline 2K's. I didn't found it very stable. Between a 5K and
3750E it worked liked a charm. But I agree for production I wouldn't use
it yet.

On Tue, Aug 11, 2009 at 7:48 PM, Ram Shummoogum <rshummoo_at_ca.ibm.com>
wrote:
Hi:

There are 2 N5K back to back in LACP as VPC peers. I want to connect a
3560, one link going to first 5K and the second to the other 5k and let
STP take care of the loop.
I don't want to VPC them.
Is this possible. My guts is telling me yes. Unfortunately no access to
test.

FYI: I did the 2k/5K VPC last week. works ok. Note that once you do VPC
between the 2K and the 5K, you cannot do VPC for a server connected to the
2k.
Etherchannel is not supported also on the 2K ( a server with 2 legs
connected on the same 2K)
Also, you cannot span a destination port on the 2K. However, you can do
source span.

I think VPC is still fragile as it came out on 31st on July on the 5K so
walk carefully. I lost my 2 X5K by just doing a no spannin vlan 100
on an edge port.
I had to reboot both to restore.

Blogs and organic groups at http://www.ccie.net
Received on Tue Aug 11 2009 - 14:18:59 ART