ZyXEL Communications XGS4600 Series, Руководство пользователя

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Chapter 24 VLAN Stacking
XGS4600 Series User’s Guide
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24.4.1 Port-based Q-in-Q
Port-based Q-in-Q lets the Switch treat all frames received on the same port as the same VLAN flows
and add the same outer VLAN tag to them, even if they have different customer VLAN IDs.
Click Port-based QinQ in the Advanced Application > VLAN Stacking screen to display the screen as
shown.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to set the
common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Role Select Normal to have the Switch ignore frames received (or transmitted) on this port with VLAN
stacking tags. Anything you configure in SPVID and Priority of the Port-based QinQ or the Selective
QinQ screen are ignored.
Select Access Port to have the Switch 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 Switch 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.
Tunnel TPID TPID is a standard Ethernet type code identifying the frame and indicates whether the frame
carries IEEE 802.1Q tag information. Enter a four-digit hexadecimal number from 0000 to FFFF that
the Switch adds in the outer VLAN tag of the frames sent on the tunnel ports. The Switch also uses
this to check if the received frames are double-tagged.
The value of this field is 0x8100 as defined in IEEE 802.1Q. It is used to identify the customer tag of an
incoming frame. If the Switch 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.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch 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.
Cancel Click Cancel to begin configuring this screen afresh.
Table 97 Advanced Application > VLAN Stacking (continued)
LABEL DESCRIPTION