LevelOne GEL-5261, User Manual

Page: 160 / 570

Chapter 5
| VLAN Configuration
IEEE 802.1Q Tunneling
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5.
Configure the SPVLAN ID as the native VID on the QinQ tunnel access port (see
“Adding Static Members to VLANs” on page 152 ).
6.
Configure the QinQ tunnel uplink port to Uplink mode (see “Adding an
Interface to a QinQ Tunnel” on page 163 ).
7.
Configure the QinQ tunnel uplink port to join the SPVLAN as a tagged member
(see
“Adding Static Members to VLANs” on page 152 ).
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.
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)
Use this field to set a custom 802.1Q ethertype value for the 802.1Q Tunnel
TPID. This feature allows the switch to interoperate with third-party switches
that do not use the standard 0x8100 ethertype to identify 802.1Q-tagged
frames. For example, if 0x1234 is set as the custom 802.1Q ethertype on a trunk
port, incoming frames containing that ethertype are assigned to the VLAN
contained in the tag following the ethertype field, as they would be with a
standard 802.1Q trunk. Frames arriving on the port containing any other
ethertype are looked upon as untagged frames, and assigned to the native
VLAN of that port.
The specified ethertype only applies to ports configured in Uplink mode (see
“Adding an Interface to a QinQ Tunnel” on page 163 ). If the port is in normal
mode, the TPID is always 8100. If the port is in Access mode, received packets
are processes as untagged packets.
Avoid using well-known ethertypes for the TPID unless you can eliminate all
side effects. For example, setting the TPID to 0800 hexadecimal (which is used
for IPv4) will interfere with management access through the web interface.
Web Interface
To enable QinQ Tunneling on the switch:
1.
Click VLAN, Tunnel.
2.
Select Configure Global from the Step list.