H3C Technologies H3C WX3000E Series Wireless Switches User Manual

Page 368

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352

Item Description

A-MSDU

Select the A-MSDU option to enable A-MSDU.
Multiple MAC Service Data Units (MSDU) can be aggregated into a single

A-MSDU. This reduces the MAC header overhead and thus improves MAC
layer forwarding efficiency.
At present, only A-MSDUs can be received.

IMPORTANT:

When 802.11n radios are used in a mesh WLAN, ensure that they have the

same A-MSDU configuration.

A-MPDU

Select the A-MPDU option to enable A-MPDU.
802.11n introduces the A-MPDU frame format. By using only one PHY header,
each A-MPDU can accommodate multiple Message Protocol Data Units

(MPDUs) which have their PHY headers removed. This reduces the overhead in

transmission and the number of ACK frames to be used, and thus improves
network throughput.

IMPORTANT:

When 802.11n radios are used in a mesh WLAN, ensure that they have the

same A-MSDU configuration.

short GI

Select short GI to enable short GI.
The 802.11a/g GI is 800ns. You can configure a short GI, 400 ns for
802.11n. The short GI increases the throughput by 10 percent.

4.

Expand Advanced Setup.

Figure 389 Radio setup (advanced setup)

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