VLAN Management
VLANs
198 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)
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Customer traffic is encapsulated with an S-tag with TPID 0x8100, regardless of
whether it was originally c-tagged or untagged. The S-tag allows this traffic to be
treated as an aggregate within a provider bridge network, where the bridging is
based on the S-tag VID (S-VID) only.
The S-Tag is preserved while traffic is forwarded through the network service
provider's infrastructure, and is later removed by an egress device.
An additional benefit of QinQ is that there is no need to configure customers' edge
devices.
QinQ is enabled in the VLAN Management > Interface Settings page.
VLAN Configuration Workflow
To configure VLANs:
1. If required, change the default VLAN by using the Configuring Default VLAN
Settings section.
2. Create the required VLANs by using the Creating VLANs section.
3. Set the desired VLAN-related configuration for ports and enable QinQ on an
interface using the Configuring VLAN Interface Settings section.
4. Assign inte rfaces to VLAN s by using the Configuring Port to VLAN section or
the Configuring VLAN Membership section.
5. View the current VLAN port membership for all the interfaces in the Configuring
VLAN Membership section.
6. If required, configure VLAN groups as described in the MAC-based
Groups<300-500> and Protocol-based VLANs< <300-500> sections.
7. If required, configure TV VLAN as described in the Access Port Multicast TV
VLAN and Customer Port Multicast TV VLAN<300-500> sections.