GE DS-82 - Manual (Page 82)

Chapter 4: Web-Based Management
78 GE-DS-82 and 82-PoE Ethernet Managed Switch User Manual
This page includes the following fields:
OBJECT DESCRIPTION
Enable Sets the Managed Switch to QinQ mode, and allows the
QinQ tunnel port to be configured.
Disable The Managed Switch operates in its normal VLAN mode.
QinQ
The default is for the Managed Switch to function in Disable mode.
QinQ TPID
The Tag Protocol Identifier (TPID) specifies the ethertype of incoming
packets on a tunnel access port.
• 802.1Q Tag : 8100
• vMAN Tag : 88A8
Default : 802.1Q Tag.
Port QinQ
Check: Sets the Port to QinQ mode. Or the port operates in its normal
VLAN mode.
Default: Un-check.
Check Configures IEEE 802.1Q tunneling (QinQ) for an uplink
port to another device within the service provider
network.
QinQ Uplink
Cancel Configures IEEE 802.1Q tunneling (QinQ) for a client
access port to segregate and preserve customer VLAN
IDs for traffic crossing the service provider network.
Q-in-Q Tunnel Setting
Business customers of service providers often have specific requirements for VLAN
IDs and the number of VLANs to be supported. The VLAN ranges required by different
customers in the same service-provider network might overlap, and traffic of
customers through the infrastructure might be mixed. Assigning a unique range of
VLAN IDs to each customer would restrict customer configurations and could easily
exceed the VLAN limit (4096) of the IEEE 802.1Q specification.
Using the QinQ feature, service providers can use a single VLAN to support customers
who have multiple VLANs. Customer VLAN IDs are preserved, and traffic from
different customers is segregated within the service-provider network, even when
they appear to be in the same VLAN. Using QinQ expands VLAN space by using a
VLAN-in-VLAN hierarchy and retagging the tagged packets. A port configured to
support QinQ is called a QinQ user-port. A port configured to support QinQ Uplink is
called a QinQ uplink-port.