Allied Telesis 2914 Series, Инструкция по установке и эксплуатации, Страница: 66 / 114

2914 Series Fiber Network Adapters with WoL Installation and User’s Guide
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Overview
The AT-2914GP/SP network adapter is installed on a PC and connects
the PC to the Ethernet network through the fiber optic port and a Powered
Device (PD) through the PoE+ copper port. A PD is a device powered
through an Ethernet cable by a Power Supply Equipment (PSE). A PC
with the AT-2914GP/SP network adapter is a PSE; a VoIP phone, Wi-Fi
access point, and security camera are PD’s.
Figure 28 illustrates the configuration of the PC’s and VoIP phones as an
example using the AT-2914GP/SP network adapters.
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Figure 28. VoIP Phone Configuration Example
When you connect VoIP phones to your network through PCs, you should
separate voice traffic from data traffic using VLAN because voice traffic
must have higher priority over other types of traffic.
When VLAN’s are enabled and configured, incoming traffic on the fiber
link are routed to the copper port or the PC, depending on the VLAN ID in
the frames. Tagged frames with unmatched VLAN ID and untagged
frames are discarded. Outbound traffic from the PC and VoIP phone are
sent to the switch on the fiber link.
In the Figure 28, you assign the VLAN ID 150 and QoS 5 to VoIP voice
traffic from the copper port and the VLAN ID 10 and QoS 0 to the PC
traffic. The voice traffic has the higher priority (QoS 5) than the PC traffic
(QoS 0).
When frames from the copper port does not have a VLAN ID assigned,
these frames remain untagged when they arrive at the switch. For more
tagging examples, See “Configuring VLAN Tagging on Adapter Ports” on
page 67.
To assign a VLAN ID and priority for the PC traffic and traffic from the
copper port, see Chapter 4, “Configuring the VLAN and Priority” on page
55.