Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 783)

Brocade 6910 Ethernet Access Switch Configuration Guide 733
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IEEE 802.1Q Tunneling
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• The native VLAN (VLAN 1) is not normally added to transmitted frames. Avoid using VLAN 1 as
an SPVLAN tag for customer traffic to reduce the risk of misconfiguration. Instead, use VLAN 1
as a management VLAN instead of a data VLAN in the service provider network.
• There are some inherent incompatibilities between Layer 2 and Layer 3 switching:
• Tunnel ports do not support IP Access Control Lists.
• Layer 3 Quality of Service (QoS) and other QoS features containing Layer 3 information are
not supported on tunnel ports.
• Spanning tree bridge protocol data unit (BPDU) filtering is automatically disabled on a
tunnel port.
General Configuration Guidelines for QinQ
1. Enable Tunnel Status, and set the Tag Protocol Identifier (TPID) value of the tunnel access port
(in the Ethernet Type field. This step is required if the attached client is using a nonstandard
2-byte ethertype to identify 802.1Q tagged frames. The default ethertype value is 0x8100.
(See
“Enabling QinQ Tunneling on the Switch” on page 733 .)
2. Create a Service Provider VLAN, also referred to as an SPVLAN (see “Configuring VLAN Groups”
on page 722 ).
3. Configure the QinQ tunnel access port to Access mode (see “Adding an Interface to a QinQ
Tunnel” on page 736 ).
4. Configure the QinQ tunnel access port to join the SPVLAN as an untagged member (see
“Adding Static Members to VLANs” on page 724 ).
5. Configure the SPVLAN ID as the native VID on the QinQ tunnel access port (see “Adding Static
Members to VLANs” on page 724 ).
6. Configure the QinQ tunnel uplink port to Uplink mode (see “Adding an Interface to a QinQ
Tunnel” on page 736 ).
7. Configure the QinQ tunnel uplink port to join the SPVLAN as a tagged member (see “Adding
Static Members to VLANs” on page 724 ).
Enabling QinQ Tunneling on the Switch
Use the VLAN > Tunnel (Configure Global) page to configure the switch to operate in IEEE 802.1Q
(QinQ) tunneling mode, which is used for passing Layer 2 traffic across a service provider’s
metropolitan area network. You can also globally set the Tag Protocol Identifier (TPID) value of the
tunnel port if the attached client is using a nonstandard 2-byte ethertype to identify 802.1Q tagged
frames.
CLI References
• “Configuring IEEE 802.1Q Tunneling” on page 388
Parameters
These parameters are displayed:
• Tunnel Status – Sets the switch to QinQ mode. (Default: Disabled)
• Ethernet Type – The Tag Protocol Identifier (TPID) specifies the ethertype of incoming packets
on a tunnel port. (Range: hexadecimal 0800-FFFF; Default: 8100)