Comments on: VLANs on ESX with Nortel Switches

By: Jason

Jason — Mon, 30 Jun 2008 20:26:52 +0000

Hello, anyone with Nortels I would love to know this. On our 3510 which is just like the 5510 but no stacking Intel cards always show asymmetrical flow control even though they can do symmetrical (send and receive pause frames)

Broadcoms show symmetrical

Anyone else see this at his/her site?

By: Duncan

Duncan — Wed, 25 Jun 2008 06:50:13 +0000

I ran into this exact same problem about a year ago. It drove me crazy, especially because I’m no networking guy… But in the end someone solved it.

By: Aleksander Zawisza

Aleksander Zawisza — Tue, 24 Jun 2008 13:28:01 +0000

If you’re using the CLI on a 55xx switch, you can ensure that the VLAN connecting to the VMware box is untagged by setting the port to “untagAll”. The command is:
vlan ports tagging untagAll

If you have multiple VLANs on the port and you want the default VLAN (called PVID) to be untagged you do:
vlan ports tagging untagPvidOnly

To set the default VLAN on a port, you do:
vlan ports pvid

Here’s a user guide describing in detail how to set up a resilient network configuration for VMware ESX using Nortel’s SMLT:
http://support.nortel.com/go/main.jsp?cscat=DOCDETAIL&id=678681&poid=14761