Port-Based Q-In-Q - ZyXEL Communications OLT2406 User Manual

Table 67 Advanced Application > VLAN Stacking (continued)
LABEL
Role
Tunnel TPID TPID is a standard Ethernet type code identifying the frame and indicates whether the frame carries
Apply
Cancel

24.4.1 Port-based Q-in-Q

Port-based Q-in-Q lets the OLT treat all frames received on the same port as the same VLAN flows and
add the same outer VLAN tag to them, even they have different customer VLAN IDs.
Click Port-based QinQ in the Advanced Application > VLAN Stacking screen to display the screen as
shown.
Chapter 24 VLAN Stacking
DESCRIPTION
Select Normal to have the OLT ignore frames received (or transmitted) on this port with VLAN stacking
tags. Anything you configure in SPVID of the Port-based QinQ is ignored.
Select Access Port to have the OLT add the SP TPID tag to all incoming frames received on this port.
Select Access Port for ingress ports at the edge of the service provider's network.
Select Tunnel Port (available for Gigabit ports only) for egress ports at the edge of the service
provider's network. Select Tunnel Port to have the OLT add the Tunnel TPID tag to all outgoing frames
sent on this port.
In order to support VLAN stacking on a port, the port must be able to allow frames of 1526 Bytes (1522
Bytes + 4 Bytes for the second tag) to pass through it.
IEEE 802.1Q tag information. Enter a four-digit hexadecimal number from 0000 to FFFF that the OLT
adds in the outer VLAN tag of the frames sent on the tunnel port(s). The OLT also uses this to check if
the received frames are double-tagged.
The default value of this field is 0x88a8 defined in IEEE 802.1ad. It's used to identify the service tag of an
incoming frame.
The value of this field is 0x8100 as defined in IEEE 802.1Q. It's used to identify the customer tag of an
incoming frame. If the OLT needs to communicate with other vendors' devices, they should use the
same TPID.
Note: You can define up to four different tunnel TPIDs (including 8100) in this screen at a
time.
Click Apply to save your changes to the OLT's run-time memory. The OLT loses these changes if it is
turned off or loses power, so use the Save link on the top navigation panel to save your changes to
the non-volatile memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
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