Zyxel IES-5106 [47/1156] Double tag pvc dtpvc

Zyxel IES-5106 [47/1156] Double tag pvc dtpvc
Chapter 1 Getting to Know Your MSC
Management Switch Card User’s Guide
47
XVLAN (VLAN translation)
XVLAN (VLAN translation) changes the VLAN tag on traffic received from a subscriber port to
another VLAN ID for the service provider’s network. This makes it easier to deploy customer-
specific VLANs because all the CPE devices can use the same VLAN configuration. You only need to
configure XVLAN on the DSLAM to use unique VLAN IDs for each subscriber’s traffic. XVLAN on the
VLC13XXGs also supports translating single-tagged frames to double-tagged frames.
Multicast VLAN
Multicast VLAN is designed for applications (such as Media-on-Demand (MoD)) using multicast
traffic across an Ethernet ring-based service provider network. Multicast VLAN allows one single
multicast VLAN to be shared among different subscriber VLANs on the network. This improves
bandwidth utilization by reducing multicast traffic in the subscriber VLANs and simplifies multicast
group management.
Transparent LAN Service (TLS)
Use TLS (also known as VLAN stacking) to add an outer VLAN tag to the inner IEEE 802.1Q tagged
frames that enter the network. By tagging the tagged frames (“double-tagged” frames), the service
provider can manage up to 4,094 VLAN groups with each group containing up to 4,094 customer
VLANs. This allows a service provider to provide different services based on specific VLANs, for
many different customers.
VDSL Double-Tag VLAN
DT VLAN (Double-Tag VLAN) adds two VLAN tags to untagged frames received on a VDSL port.
These two VLAN tags consist of an inner c-tag (customer tag) and an outer s-tag (service provider
tag). The line card drops any tagged frames it receives from a subscriber.
Double-Tag PVC (DTPVC)
DTPVCs (Double-Tag Permanent Virtual Circuits) add double VLAN tags to untagged frames received
from a DSL subscriber on the specified PVC. These double VLAN tags consist of an inner c-tag
(customer tag) and an outer s-tag (service provider tag). The line card drops any tagged frames
received on the DTPVC. DTPVCs support DHCP relay, IGMP, IEEE 802.1x and PPPoE agent.
PPPoA-to-PPPoE (PAE) PVC
This feature allows the system to translate PPPoA packets to PPPoE packets (and vice versa) to
allow communication between CPE clients and an access concentrator (such as a BRAS) through the
switch.
PPPoE Intermediate Agent Information
Similar to DHCP relay option82, you can set the system to insert line information into client PPPoE
Active Discovery Initialization (PADI) packets. This allows a PPPoE termination server to identify
and authenticate a PPPoE client.

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