Extreme Networks ExtremeWare XOS Guide User Manual

Tunneling (VMANs)
ExtremeWare XOS 11.3 Concepts Guide
235
Guidelines for Configuring VMANs
The following are some guidelines for configuring VMANs:
● Each tunnel port that accesses the user, or customer port, can support (or belong to) only one VMAN
tunnel; the remaining ports throughout the VMAN tunnel can support many VMANs.
● Duplicate customer’s MAC address ingressing from multiple VMAN ports may disrupt the port
learning association process in the switch.
● VMAN ports can belong to load-sharing groups.
On the BlackDiamond 10K series of switches, if any port in the load-sharing group is enabled for
VMAN, all ports in the group are automatically enabled to handle jumbo size frames. Also, VMAN
is automatically enabled on all ports of the untagged load-sharing group.
● You must use mutually exclusive names for:
■ VLANs
■ VMANs
■ Ipv6 tunnels
Configuring VMANs
You configure VMANs slightly differently on the BlackDiamond 10K switch and on the BlackDiamond
8800 family of switches and the Summit X450 switch.
Configuring VMANs—BlackDiamond 8800 Family of Switches and the Summit X450
Switch Only
NOTE
On the BlackDiamond 8800 family of switches, 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. Similarly, each discrete Summit X450 switch must have all ports belonging to
either VLANs or VMANs; you cannot have VMAN and VLAN ports on the same switch.
Because the BlackDiamond 8800 family of switches and the Summit X450 switch enable 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.

Extreme Networks ExtremeWare XOS Guide Specifications

General

Brand	Extreme Networks
Model	ExtremeWare XOS Guide
Category	Software
Language	English