User's Manual

Table Of Contents
180 Operation
Chapter 4 - Operation and Administration
Hybrid VLAN Mode is Off and the VLAN List includes a single VLAN ID.
Hybrid VLAN Mode is On and the VLAN List is empty.
For transparent services it is also possible to configure an Access VLAN to be used
with untagged packets received on the Ethernet port of the SU. This parameter is
applicable only for a transparent service with Hybrid Mode set to On, or a
transparent service with Hybrid Mode set to Off and an empty VLAN list.
A maximum of one Access VLAN can be defined per SU.
Hybrid VLAN Mode of operation enables classification of both tagged and
untagged packets or untagged packets only, according to the following rules:
The guidelines that should be followed when defining VLAN IDs and related
parameters are:
A specific VLAN ID behind a certain SU can be associated only with a single
Service of a certain Service Type. It is not possible to define two Services of the
same Service Type for the same SU and VLAN ID. However, the same SU and
VLAN ID can be associated with two Services of different Service Types,
excluding the combination of L2 Service and Voice Service.
For each Service Type, a maximum of one Service that enables forwarding of
untagged packets can be assigned to an SU. Forwarding of untagged packets
is supported when either Hybrid VLAN Mode is On, or Hybrid VLAN Mode is
Off and the VLAN List is empty. It is not possible to define for the same SU two
Services of the same Service Type that enable forwarding of untagged packets.
However, the same SU and untagged packets can be associated with two
Services of different Service Types, excluding the combination of L2 Service
and Voice Service.
Table 4-7: Hybrid VLAN Mode
Hybrid VLAN
Mode
VLAN List Forwarded Packets
Off Exists Only packets tagged with a VLAN ID that exists in the VLAN List.
VLAN List can include up to 16 entries.
Empty All (both untagged and tagged with any VLAN ID)
On Exists Untagged packets, and packets tagged with a VLAN ID that exists in
the VLAN List. VLAN List can include up to 15 entries.
Empty Only untagged frames.