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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
192
4.8.2.2 802.1Q Tunnel Port Configuration
Adding an Interface to a QinQ Tunnel
Follow the guidelines in the preceding section to set up a QinQ tunnel on the Managed Switch. Use the VLAN Port Configuration
or VLAN Trunk Configuration screen to set the access port on the edge switch to 802.1Q Tunnel mode. Also 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.
Command Usage:
Use the 802.1Q Tunnel Configuration screen to set the Managed Switch to QinQ mode before configuring a
tunnel port (see “Enabling QinQ Tunneling on the Switch”).
Use the TPID field to set a custom 802.1Q ethertype value on the selected interface. 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.
All ports on the switch will be set to the same ethertype.
Figure 4-8-9.802.1Q Tunnel Port Configuration page screenshot