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AT-2716POE Fast Ethernet Fiber & PoE Adapter Installation and User’s Guide
59
Example 2 shows a scenario where non VLAN aware VoIP phone is
present. In this scenario, the copper port of the AT-2716 POE is
responsible for tagging the VoIP data with VLAN 2. This data is then sent
through the fiber port to the network backbone. Network data continues to
be tagged with VLAN 1 and is segmented from VoIP data.
Example 3 shows a scenario where a VLAN aware phone is present and
has VLAN tagging enabled. VoIP data is transmitted tagged with VLAN 2
between the phone and the copper port. The AT-2716POE passes this
data unchanged from the copper port through the fiber port to the network
backbone. Network data continues to be tagged with VLAN 1 and is
segmented from VoIP data.
Each AT-2716POE port is capable of transmitting and receiving tagged
or non-tagged packets giving the network administrator several options as
listed in Table 3.
Table 3. AT-2716 POE VLAN Settings
Fiber Port
VLAN Settings
Copper Port
VLAN Settings
Effect of VLAN Tags on
Ethernet Packets
Disabled (0)
Disabled (0)
Packets are not tagged on either
port. Packets from the host
computer on the fiber port are
unchanged. Packets on the
copper port are bridged to the
fiber port unchanged.
Enabled
Disabled (0)
Packets from the host computer
are tagged on the fiber port.
Packets
on the copper port are
unchanged
and bridged to the
fiber port unchanged.
Disabled (0)
Enabled
Packets from the host computer
are untagged and passed through
to the fiber port unchanged.
Packets on the copper port are
tagged and bridged to the fiber
port.
Enabled
Enabled
Packets from the host computer
are tagged on the fiber port.
Packets on the copper port are
tagged and bridged to the fiber
port.