[e-nsp] vlan and vman on the same switch

[Erik Bais]

Hi Marcin,

If you want to do this from a single port through the (3) devices to another port at the other side, there are several options.

If the traffic is multiple vlan's.. in that case a VMAN is a good option. (make sure you have the same Ethernet frame type in all 3 devices for VMAN's.)
If it regular untagged traffic, a single vlan should suffice.

It is possible to have multiple ports in a vman.. However all tagged traffic that you stuff into it, is what you get out of it. Make sure that you don't mixed customers their VMAN's, as it will also mix their vlan's :-)
If you have Cisco's on the other side (a trunked port) instruct the customer to prune vlan's and only allow the VLANs they need / want on the other side.   It is also quite possible to create broadcast storms if the customer is having multiple routes to the same locations. Be aware of this ..

Each port that you create for a specific VMAN, should be untagged on ingress/egress.

Hope this helps,
Erik Bais

-----Original Message-----
From: extreme-nsp-bounces at puck.nether.net [mailto:extreme-nsp-bounces at puck.nether.net] On Behalf Of Marcin Kuczera
Sent: vrijdag 12 oktober 2012 19:57
To: extreme-nsp at puck.nether.net
Subject: [e-nsp] vlan and vman on the same switch

hello,

could anyone help me with configuring VMAN on EXOS (x450, x650, x670) switches ?

Let's say, that there is a network with number of VLANs, L2 only.
I want to get a channel, that will be "open" - so at the edges of network, will be added as untagged.
So, someone connected to edge "untagged" ports will be able to transmit their own VLANs inside.
I though that VMAN is a good solution here, but I can't add any port to VMAN...

Is it a proper way to do QinQ ? If yes - then what's wrong, if not - what do you recommend ?

Regards,
Marcin

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