Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 488)

464 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Configuring VPLS instances
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Brocade(config-mpls-vpls-test)# no vc-mode raw-pass-through
For VPLS instances with an ISID configuration, first remove the ISID configuration, then disable
VPLS raw-pass-through mode.
When the user attempts to disable VPLS raw pass through mode on a VPLS instance with ISID, the
system displays the following error message.
Brocade(config-mpls-vpls-test)# no vc-mode raw-pass-through
Error – Cannot remove tagged-mode setting while VPLS ISID configuration exists
Syntax: [no] vc-mode raw-pass-through
For information on displaying the raw mode configuration, refer to “Displaying the VPLS raw pass
through mode configuration”
Configuration example
The following is an example output of a running configuration with VPLS raw pass through mode
configured.
router mpls
vpls test 100
vc-mode raw-pass-through
vpls-peer 10.100.100.100
vlan 100 inner-vlan 45
tag e 2/1
vpls name_raw 3
vpls-peer 10.200.200.200
vlan 300 inner-vlan 500
tagged ethe 3/1 ethe 3/11 ethe 3/13
vpls vctagged 200
vc-mode tagged
vpls-peer 10.300.300.300
vlan 200
tag e 2/2
VPLS tagged mode
VPLS tagged mode enables the preservation of the VLAN tag information in the payload. In VPLS
tagged mode, the VLAN priority of the original (incoming) packets is carried across the MPLS cloud
to remote peers.
By default, VPLS packets are sent across the MPLS cloud in raw mode. To use VPLS tagged mode,
enable it per VPLS instance on both sides of the communicating edge routers. When this feature is
enabled, the VLAN tag is determined as follows:
• When the original packet has one VLAN tag, the payload tag is the (outer) VLAN tag of the
original packet
• When the original packet has dual VLAN tags, the payload tag is the inner VLAN tag of the
original packet
• When the original packet is untagged, the payload tag is the configured VLAN on the VPLS
untagged endpoint, and the CoS is zero