Extreme Networks ExtremeWare XOS 11.1, Manual

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Tunneling (VMANs)
ExtremeWare XOS 11.1 Concepts Guide
165
Configuring VMANs
You configure VMANs slightly differently on the BlackDiamond 10K switch and on the Aspen 8810
switch.
Configuring VMANs—Aspen 8810 Switch Only
On the Aspen 8810 switch, you cannot configure both VLANs and VMANs on the same slot; all ports
on each slot must belong exclusively to either VLANs or VMANs. If you do configure both VLANs and
VMANs on the same slot, the system returns an error message. The VMAN can span multiple modules,
but the same module cannot have both VLANs and VMANs.
Because the Aspen 8810 switch enables jumbo frames switch-wide, you enable jumbo frames prior to
configuring VMANs on that system.
To configure a VMAN, follow these steps:
1 Enable jumbo frames on the switch.
2 Create the tunnel by creating the VMAN.
3 Assign a tag value to the VMAN.
4 Add the ports in the tunnel to the VMAN.
5 Configure VMAN member ports as tagged on switch-to-switch ports and untagged on the ingress
and egress ports of the tunnel.
NOTE
You must configure the VMAN tunnel egress, or trunk, port as untagged so that the VMAN header is stripped from
the frame.
Configuring VMANs—BlackDiamond 10K Switch Only
The BlackDiamond 10K switch automatically enables jumbo frames on the ports that you add to a
VMAN.
To configure a VMAN, follow these steps:
1 Create the tunnel by creating the VMAN.
2 Assign a tag value to the VMAN.
3 Add the ports in the tunnel to the VMAN.
4 Configure VMAN member ports as tagged on switch-to-switch ports and untagged on the ingress
and egress ports of the tunnel.
NOTE
You must configure the VMAN tunnel egress, or trunk, port as untagged so that the VMAN header is stripped from
the frame.
VMAN Example—BlackDiamond 10K Switch
The follow example shows the steps to configure VMAN 1 on the Black Diamond 10808 switch shown
in
Figure 8 .