Specifying a dual-tagged endpoint – Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Configuring MPLS VLLs
4
Specifying a dual-tagged endpoint
Dual-tagged packets contain both an outer VLAN tag and an inner VLAN tag. Dual-tagged VLL
endpoints enable MPLS VLL to recognize packets with two tags and make forwarding decisions
based on them. A dual-tagged endpoint can receive packets with two tags and forward them to the
other endpoint either untagged, single-tagged, or dual-tagged.
NOTE
Before configuring a dual-tagged endpoint, see
“By removing FDP from the configuration, no fdp
enable stays in the configuration of the VLPS endpoints, which cannot be removed.”
537.
To specify a dual-tagged endpoint for a VLL instance, enter commands such as the following:
Brocade(config-mpls)# vll test 100
Brocade(config-mpls-vll-test)# vlan 200 inner-vlan 300
Brocade(config-mpls-vll-test-vlan)# tagged e 3/11
Syntax: [no] vlan vlan-id inner-vlan vlan-id
Syntax: [no] tagged ethernet slot/port
The vlan vlan-id, which is the outer VLAN ID, can be in the range from 1 to 4094 and excludes the
default VLAN.
The inner-vlan vlan-id can be in the range from 1 to 4095 and includes the default VLAN.
Use the [no] form of the command to remove the dual-tagged VLL VLAN configuration and its
associated endpoints. For example, the command no vlan 200 inner-vlan 300 removes the
dual-tagged VLAN and associated endpoints. The single-tagged VLAN, vlan 200, is not deleted.
Similarly, the command no vlan 200 removes the single-tagged VLAN, vlan 200, and associated
endpoints. The dual-tagged VLAN, vlan 200 inner-vlan 300, is not deleted.
NOTE
A tagged port can be a part of one or more VLLs, and at the same time be part of one or more regular
VLANs and one or more VPLSs as a tagged member.
Viewing the VLL dual-tagged configuration
Use the show running config and show mpls vll commands to view the VLL dual-tagged
configuration. The following shows an example show running config output. For examples and
details of the show mpls vll commands, see
“Displaying information about MPLS VLLs”
547.
Brocade# show run
....
router mpls
vll test 100
vlan 100 inner-vlan 45
tag e2