VLAN Management
Customer Port Multicast TV VLAN
245 Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3
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Packets from subscribers to the service provider network are forwarded as VLAN
tagged frames, in order to distinguish between the service types, which mean that
for each service type there is a unique VLAN ID in the CPE box.
All packets from the subscriber to the service provider network are encapsulated
by the access device with the subscriber’s VLAN configured as customer VLAN
(Outer tag or S-VID), except for IGMP snooping messages from the TV receivers,
which are associated with the Multicast TV VLAN. VOD information that is also
sent from the TV receivers are sent like any other type of traffic.
Packets from the service provider network that received on the network port to
the subscriber are sent on the service provider network as double tag packets,
while the outer tag (Service Tag or S-Tag) represent one of the two type of VLAN
as following:
• Subscriber’s VLAN (Includes Internet and IP Phones)
• Multicast TV VLAN
The inner VLAN (C-Tag) is the tag that determines the destination in the
subscriber’s network (by the CPE MUX).
Workflow
1. Configure an access port as a customer port (using the VLAN Management >
Interface Settings page). See QinQ for more information.
2. Configure the network port as a trunk or general port with subscriber and
Multicast TV VLAN as tagged VLANS. (using the VLAN Management > Interface
Settings page.
3. Create a Multicast TV VLAN with up to 4094 different VLAN(s). (The VLAN
creation is done via the regular VLAN management configuration)
4. Associate the customer port to a Multicast TV VLAN, using the Port Multicast
VLAN Membership page.
5. Map the CPE VLAN (C-TAG) to the Multicast TV VLAN (S-Tag), using the CPE
VLAN to VLAN page.
Mapping CPE VLANs to Multicast TV VLANs
To support the CPE MUX with subscriber’s VLANs, subscribers may require
multiple video providers, and each provider is assigned a different external VLAN.
CPE (internal) Multicast VLANs must be mapped to the Multicast provider
(external) VLANs.
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