KB.15.15

5. (Optional) Assign priorities to traffic passing through the provider network.

CAUTION: A reboot is required to enable/disable QinQ operations on the switch. When moving

between QinQ modes (qinq mixedvlan to qinq svlan or vice versa), the switch boots up

with a default configuration for the new qinq mode and the configuration parameters of the current

mode will be erased.

QinQ Configuration example

This configuration example uses four HP switches to establish a QinQ tunnel through the provider

network.

Figure 76 QinQ configuration example

The design parameters are as follows:

• The provider edge bridge and the provider core bridge are configured in svlan mode.

• Each customer is associated with a single S-VLAN connecting two separate sites: customer

A's VLANs (C-VLANs 1-10) are associated with S-VLAN 100; and customer B's VLANs (C-VLANs

1-20) are associated with S-VLAN 200.

NOTE:

• The VLANs of customers A and B can overlap: this will not result in intermixing of customer

frames in the provider cloud because the S-VLANs associated with each customer are different.

• Core devices are not mandatory to establish a QinQ tunnel. For example, two edge-bridges

can be connected directly to create a provider bridge network.

• The relationship between S-VLANs and C-VIDs is typically one to many. An alternative

configuration might associate a single customer's C-VIDs with more than one S-VLAN. Such

a configuration would most likely be used to tunnel distinct C-VIDs through various S-VLANs,

but seldom be used to send the same C-VID through multiple S-VLANs.

Figure 77 Configuration example: Edge Switch 1

324 QinQ (Provider bridging)