Specifications

Configuring Routing Between VLANs
Feature Information for Routing Between VLANs
71
Technical Assistance
Feature Information for Routing Between VLANs
Table 42 lists the features in this module and provides links to specific configuration information. Only
features that were introduced or modified in Cisco IOS Releases 12.0(3)S or a later release appear in the
table.
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specific command, see the command reference documentation.
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Note Table 42 lists only the Cisco IOS software release that introduced support for a given feature in a given
Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS
software release train also support that feature.
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Table 42 Feature Information for Routing Between VLANs
Feature Name Releases Feature Information
IEEE 802.1Q-in-Q VLAN Tag Termination 12.0(28)S,
12.3(7(X17,
12.0(32)S1,
12.2(31)SB
IEEE 802.1Q-in-Q VLAN Tag Termination simply adds
another layer of IEEE 802.1Q tag (called “metro tag” or
“PE-VLAN”) to the 802.1Q tagged packets that enter the
network. The purpose is to expand the VLAN space by
tagging the tagged packets, thus producing a
“double-tagged” frame. The expanded VLAN space allows
the service provider to provide certain services, such as
Internet access on specific VLANs for specific customers,
and yet still allows the service provider to provide other
types of services for their other customers on other VLANs.
VLAN Range Using the VLAN Range feature, you can group VLAN
subinterfaces together so that any command entered in a
group applies to every subinterface within the group. This
capability simplifies configurations and reduces command
parsing.
12.0(7)XE The interface range command was introduced.