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Wireless IAD User Manual
84
After pressing Next, you will see the
web page listed as the right one.
Choose the protocol that you would
like to use.
Please refer to Quick Setup for more
information if you don’t know how to
set the configuration.
Enable QoS:
Check this item to enable IP QoS for a
PVC. It can improve performance for
selected classes of applications. For
more details please refer to
Advanced/Quality of Service
section.
If you choose PPPoE (or Bridging),
you will see the option for 802.1Q
VLAN Tagging.
802.1Q VLAN Tagging:
802.1Q-compliant switch ports can be
configured to transmit tagged or
untagged frames. A tag field
containing VLAN (and/or 802.1p
priority) information can be inserted
into an Ethernet frame. If a port has an
802.1Q-compliant device attached
(such as another switch), these
tagged frames can carry VLAN
membership information between
switches, thus letting a VLAN span
multiple switches. However, it is
important for network administrators to
ensure ports with non-802.1Q-
compliant devices attached are
configured to transmit untagged
frames. Many NICs for PCs and
printers are not 802.1Q-compliant. If
they receive a tagged frame, they will
not understand the VLAN tag and will
drop the frame. Also, the maximum
legal Ethernet frame size for tagged
frames was increased in 802.1Q (and
its companion, 802.3ac) from 1,518 to
1,522 bytes.
After checking Enable 802.1Q VLAN
Tagging, you will have to enter a
VLAN ID, as shown in the figure.
VLAN ID:
The VLAN Identifier is a 12 bit field. It
uniquely identifies the VLAN to which
the frame belongs to and can have a
value between 0 and 4095.
Click Next to continue.
Notice that 802.1Q VLAN
Tagging function can only be
invoked under PPPoE and
Bridging Mode; the system will
not provide this option while
setting PPPoA or IPoA mode.