Interlogix GE-DS-242-PoE, User Manual

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Chapter 4: Console Management
GE-DS-242-PoE Managed Ethernet Switch User Manual 71
OBJECT DESCRIPTION
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.
Figure 4-32: Q-in-Q Tunnel Setting interface
To configure QinQ Port
1. Enable global QinQ function: select
QinQ
enable
"Enable"
.