H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 368)

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)