Compaq WL110, Руководство пользователя

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6-2 Optimizing Performance
The ratio of network overhead in relation to “True Data” differs from one
networking service to another. However when the ratio of network overhead is
more than actually required, this may affect the performance of your wireless
LAN, because your “True Data” has to share the bandwidth capacity with the
network overhead.
Eliminating redundant traffic can significantly improve the performance of your
network. Using the AP Manager you can choose from one or more of the
following options:
■
Protocol Filtering (page 6-2): to filter protocols that are not relevant to
wireless stations.
■
Optimizing Wired Connections (page 6-4): to eliminate redundant error
messages due to failing connections.
■
Optimizing Wireless Connections (page 6-6): to avoid retransmission of
lost or collided frames.
Protocol Filtering
Some network protocols send large volumes of broadcasts to all stations. In
many cases, these protocols may not be required by your wireless stations. In
these cases, protocol filtering may prevent the transmission of unnecessary data,
saving more bandwidth for the communication of “true data” in your network.
Do You Need Protocol Filtering?
To diagnose whether or not the protocol broadcasts degrade the performance of
a wireless network, you can use the Remote Statistics tab as described on
“Remote Statistics Tab” on pag e5-23.
1. Start the AP Manager and select the Access Point and click the
Monitor
button.
2. From the
Monitor
menu, select
Remote Statistics
.
3. Select the
Remote
tab to display the interface statistics.
4. Compare the number of
Out collisions
with the number of
Bridge out packets
.
❏
When the number of “Out collisions” is less than 1% of the “Bridge out
packets”, this indicates that the wireless medium is performing fine, i.e.
protocol filtering is not required, but might still be considered.
❏
When the number of “Out collisions” is more than 1% of the “Bridge
out packets”, this indicates that the wireless medium is very busy.
If the wireless medium is busy, and you do not see many users or
excessive traffic on the network, it might be worth investigating whether
protocol filtering will improve your network performance.
5. Compare the number of
Unicast packets out
to the number of
Non-Unicast
packets out
.