RE: Nexus 5K vPC Peer link 1Gb over OM2 Fiber

This is why I asked. You *don't* want to run vPC in this case. If the
servers are only single attached they become "orphan ports" and there is some
additional problems in forwarding logic in reaching these hosts. vPC is for
when your hosts are dual attached to both vPC peers.

Brian McGahan, CCIE #8593 (R&S/SP/Security), CCDE #2013::13
bmcgahan_at_INE.com<mailto:bmcgahan_at_INE.com>

Internetwork Expert, Inc.
http://www.INE.com<http://www.ine.com/>

From: Ian Blaney [mailto:ian.blaney_at_gmail.com]
Sent: Thursday, April 04, 2013 4:13 PM
To: Ryan West
Cc: Brian McGahan; ccielab_at_groupstudy.com
Subject: Re: Nexus 5K vPC Peer link 1Gb over OM2 Fiber

I guess I should have put OT on the subject line as this is more real world
related but I hope someone gets something out of it plus I wanted to abuse the
free real world knowledge of people that are subscribed to this list :o)

Many thanks for looking into it.

Unfortunatley this is the distance between the 2 buildings where the switches
are currently located. At the moment the uplinks from the servers and access
switches are only 1Gb which support up to 550m using standard 1000BASE-SX SFPs
over legacy OM2 fiber. There are plans to upgrade the fiber and eventually
move the servers to 10Gb but unfortunately its not in the current budget. What
is in the current budget is a pair of Nexus which I wanted to impress people
with features like vPC but it looks like they will have to wait.

Ian
On Thu, Apr 4, 2013 at 11:00 PM, Ryan West
<rwest_at_zyedge.com<mailto:rwest_at_zyedge.com>> wrote:
On Thu, Apr 04, 2013 at 16:27:56, Brian McGahan wrote:
> Subject: RE: Nexus 5K vPC Peer link 1Gb over OM2 Fiber
>
> It actually does appear to be supported. Below are two 5Ks running
> 5.1(3)N1(1a) that allow this config:
>
Maybe that error message was on a thread with both 7k and 5k's and that
message came from the 7k. I was able to find documentation about the 7k
requiring 10G.

-ryan

Blogs and organic groups at http://www.ccie.net<http://www.ccie.net/>
Received on Thu Apr 04 2013 - 18:28:41 ART