Table of Contents
Advertisement
4.4
Port VLAN Membership
Introduction
Each bridge port can be member of one or more VLANs. A bridge port can only be member of a VLAN if this
VLAN already exists on the bridge.
The CLI commands explained in this section belong to the command group
Tagged and untagged membership
A bridge port can be tagged or untagged member of a VLAN:
Tagged
member: if the bridge port is tagged member of a VLAN, the VLAN header of received VLAN-
tagged frames is not stripped off when the frames are sent out on the bridge port. As a result, all frames
transmitted by the bridge port are tagged frames.
Untagged
member: if the bridge port is untagged member of a VLAN, the VLAN header of received
VLAN-tagged frames is stripped off when the frames are sent out on the bridge port. As a result, all
frames transmitted by the bridge port are untagged frames.
Rules for bridge ports
If you want to change the VLAN membership of a bridge port, you must take following rules into account:
A bridge port must be
A bridge port can be
A bridge port can be
A bridge port can
Rules for the OBC
If you want to change the VLAN membership of the OBC, you must take following rules into account:
The OBC can be member of all available VLANs supported by the bridge.
The OBC can be
untagged
The OBC must be member of the default VLAN.
Be careful when modifying the VLAN membership of the OBC, as violations of these rules are not
always reported by the Thomson Gateway.
Listing VLAN memberships
To display all port VLAN memberships, execute following command:
=>:eth bridge vlan iflist
Vid
Name
---
----
1
default
2
data
Bridge ports that are
E-DOC-CTC-20080229-0001 v1.0
untagged
member of
at least 1
untagged
member of
1 or more
tagged
member of
0 or more
never
be tagged
and
untagged member of the same VLAN.
member of
maximum one
Bridge interfaces (* = untagged)
--------------------------------
OBC*, ethport1*, ethport2*, ethport3*, ethport4*, WLAN*
untagged
member of a VLAN are indicated by an
4|
Ethernet Bridge and VLANs
:eth bridge vlan
VLAN.
VLANs.
VLANs.
VLAN.
.
asterisk
in the list.
17
Advertisement
Table of Contents
