User's Manual

4-13
Cisco 3200 Series Wireless MIC Software Configuration Guide
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Chapter 4 Configuring Radio Settings
Configuring the Ethernet Encapsulation Transformation Method
Note The Antenna Gain (dB) setting is disabled on the WMIC.
Configuring the Ethernet Encapsulation Transformation Method
When the WMIC receives data packets that are not 802.3 packets, the WMIC must format the packets to
802.3 using an encapsulation transformation method. These are the two transformation methods:
• 802.1H—This method provides optimum performance for Cisco wireless products. This is the
default setting.
• RFC1042—Use this setting to ensure interoperability with non-Cisco wireless equipment. RFC1042
does not provide the interoperability advantages of 802.1H but is used by other manufacturers of
wireless equipment.
Beginning in privileged EXEC mode, follow these steps to configure the encapsulation transformation
method:
Note For best performance over your bridge links, adjust the CW-min and CW-max contention window
settings to to a value based on the number of non-root bridges associated to each root bridge. Refer to
the “CW-min and CW-max Settings for Point-to-Point and Point-to-Multipoint Bridge Links” section on
page 11-8 for instructions on adjusting these settings.
Enabling and Disabling Concatenation (2.4-GHz Only)
Use the concatenation command to enable packet concatenation on the WMIC radio. Using
concatenation, the WMIC combines multiple packets into one packet to reduce packet overhead and
overall latency, which increases transmission efficiency.
Beginning in privileged EXEC mode, follow these steps to enable concatenation and set the maximum
length of concatenation.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface dot11radio 0 Enter interface configuration mode for the radio interface.
Step 3
payload-encapsulation RFC1042 |
dot1h
Set the encapsulation transformation method to RFC1042 or
802.1h (dot1h, the default setting).
Step 4
end Return to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface dot11radio 0 Enter interface configuration mode for the radio interface.