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When traffic is prioritized at the host or entry point of the network, network
devices can base forwarding decisions on priority information defined in the
packet.
Priority Packet prioritizes traffic on the basis of priority filters—parameters you
assign to be applied to outgoing (transmit) packets. Using the Priority Filter
Wizard, you can set up predefined or custom priority filters on the basis of
node (MAC) address, Ethernet type, or various properties of the protocol and
port.
Priority Packet provides two methods for prioritizing traffic, IEEE_802.1p
tagging and Intel High Priority Queue. To use Priority Packet, you need to
enable IEEE_802.1p Tagging and then install Priority Packet.
To enable IEEE_802.1p tagging on an adapter, do as follows:
1. In the Control Panel, double-click Network.
2. Select the adapter and click Properties.
3. Select the Advanced tab and enable IEEE_802.1p tagging.
To install Priority Packet, run the setup program on the Drivers CD. This
program is located at x:\prtpkt\setup.exe, where x is the drive letter of
the CD-ROM drive.
Note: IEEE_802.1p tagging increases the size of the packets it tags. Some
hubs and switches will not recognize the larger packets and will
drop them. Check the documentation for your hubs and switches to
see whether they support 802.1p. If they do not or if you are not
sure, you have two choices.
v You can use High Priority Queue (HPQ) instead (see the next section), or
v You can configure the switch to strip the tags from the packets and send
them on to the next destination as normal traffic.
Intel High Priority Queue
If your network infrastructure devices do not support IEEE_802.1p, or if
you’re not sure, you can still define filters and send packets as high priority
by assigning them to the High Priority Queue (HPQ).
To do this, you use Priority Packet when you create or assign a filter. This
method does not provide the precise priority levels of 802.1p tagging, but it
does assign high or low priority to traffic and sends packets having high
priority first. Therefore, if there are multiple applications on a system
sending packets, the packets from the application with a filter are sent out
first. HPQ does not change network routing, nor does it add any
information to the packets.
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PRO/100 SP Mobile Combo Adapter: User’s Guide