EVC per UNI Attributes

EVC-related attributes are divided into two groups:

1. EVC per UNI Attributes – these are attributes that can be set differently for each UNI associated with the EVC
2. EVC Attributes – these are general attributes that define the EVC and its behavior and apply on all UNIs associated with the EVC

UNI EVC ID

A string formed by the concatenation of the UNI ID and the EVC ID.

CE-VLAN ID / EVC Map

The map defines which value(s) of CE-VLAN ID are mapped to each of the virtual private EVCs on the UNI.

Each CE-VLAN ID can be mapped to at most one EVC. The CE-VLAN ID / EVC map is the basis for service identification, which is relevant for all virtual services (In private services, all CE-VLAN IDs are mapped to the single EVC, i.e., All-to-One Bundling=ENABLED).

Note that the map can vary between UNIs associated with the same EVC. This can happen when CE-VLAN IDs are not preserved, and instead are translated by the Service Provider.

More than one CE-VLAN ID can be mapped to an EVC only if Bundling is ENABLED at that UNI.

Any value of CE-VLAN ID not assigned to an EVC at a UNI must be dropped.

In the following example, there are three EVCs on the UNI. Each EVC has one CE-VLAN ID mapped to it. In addition, the UNI has CE-VLAN ID for untagged and priority tagged frames set to 17 (see #10 on UNI Attributes), so those frames are mapped to EVC3.