Ethernet Switches & Routers

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New Contributor
Posts: 2
Registered: ‎05-24-2012

VLAN tagging question

I'll start off by stating the obvious - I'm no network guru.

I've inherited some IBM branded Brocade switches. The 'show version' command tells me that they're "Stackable TurboIron-X24".

I'm trying to setup 2 ESXi hosts using one of these switches. I've created VLAN 10, and added 2 ports using 'tagged e xx'.

Now on the 2 ESXi hosts, I've created a vSwitch for vMotion, and assigned physical host NICs that are plugged into the above ports. I've given them IP addresses like 10.0.0.1/24 and 10.0.0.2/24. When I ping one from the other, I get no reply. To make it work, I had to assign VLAN ID 10 to the vSwitch.

Is this expected behaviour ? I would've thought that the traffic would've been tagged appropriately on the way into the switch port and nothing would need to be done on the hosts themselves ?

I'm (almost) sure that in the past using Cisco switches I've not had to add the VLAN ID to the vSwitch.

Thanks in advance.

New Contributor
Posts: 2
Registered: ‎12-28-2011

Re: VLAN tagging question

If i'm following your post correctly, you've setup vlan 10 on port 1 and 2 in tagged (as in 802.1q vlan tag) mode. If you don't want to have to configure a vlan on your vSwitch, set vlan 10 to untagged on those ports.

vlan 10

untagged eth 1 to 2

New Contributor
Posts: 2
Registered: ‎05-24-2012

Re: VLAN tagging question

Thanks for the reply Chris. So to confirm, tagging ports is the equivalent of making them trunk ports in Cisco land ?

Yes this is the opposite of what I intended. I'll untag them and remove the VLAN ID from the vSwitch. This should fix it.

Thanks for the help.

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