Switchport dot1q-tunnel service match cvid – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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Configuring IEEE 802.1Q Tunneling
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When a tunnel uplink port receives a packet from a customer, the customer tag (regardless of
whether there are one or more tag layers) is retained in the inner tag, and the service
provider’s tag added to the outer tag.
•
When a tunnel uplink port receives a packet from the service provider, the outer service
provider’s tag is stripped off, and the packet passed on to the VLAN indicated by the inner tag.
If no inner tag is found, the packet is passed onto the native VLAN defined for the uplink port.
Example
Console(config)#interface ethernet 1/1
Console(config-if)#switchport dot1q-tunnel mode access
Console(config-if)#
Related Commands
show interfaces switchport (282)
switchport dot1q-tunnel service match cvid
This command creates a CVLAN to SPVLAN mapping entry. Use the no form to delete a VLAN
mapping entry.
Syntax
switchport dot1q-tunnel service svid match cvid cvid
svid - VLAN ID for the outer VLAN tag (Service Provider VID). (Range: 1-4093)
cvid - VLAN ID for the inner VLAN tag (Customer VID). (Range: 1-4094)
Default Setting
Default mapping uses the PVID of the ingress port on the edge router for the SPVID.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
•
The inner VLAN tag of a customer packet entering the edge router of a service provider’s
network is mapped to an outer tag indicating the service provider VLAN that will carry this
traffic across the 802.1Q tunnel. This process is performed in a transparent manner as
described under
•
When priority bits are found in the inner tag, these are also copied to the outer tag. This allows
the service provider to differentiate service based on the indicated priority and appropriate
methods of queue management at intermediate nodes across the tunnel.
•
Rather than relying on standard service paths and priority queuing, QinQ VLAN mapping can be
used to further enhance service by defining a set of differentiated service pathways to follow
across the service provider’s network for traffic arriving from specified inbound customer
VLANs.
•
Note that all customer interfaces should be configured as access interfaces (that is, a
user-to-network interface) and service provider interfaces as uplink interfaces (that is, a
network-to-network interface). Use the
uplink
command to set
an interface to access or uplink mode.