Configuring 802.11G Protection Mode; Configuring 802.11N Protection; Enabling 802.11N Protection - H3C MSR Series Configuration Manual

Step

Configuring 802.11g protection mode

802.11g protection modes include RTS/CTS and CTS-to-self.
•
RTS/CTS—An AP sends an RTS packet before sending data to a client. After receiving the
RTS packet, all the devices within the coverage of the AP do not send data within the specified
time. Upon receiving the RTS packet, the client sends a CTS packet. This ensures that all the
devices within the coverage of the client do not send data within the specified time.
•
CTS-to-Self—An AP uses its IP address to send a CTS packet before it sends data to a client.
This ensures that all the devices within the coverage of the AP do not send data within the
specified time.
To configure the 802.11g protection mode:
Step
1. Enter system view.
2. Enter WLAN RRM view.
3. Configure the 802.11g
protection mode.

Configuring 802.11n protection

The following matrix shows the feature and router compatibility:
Feature
802.11n

Enabling 802.11n protection

When both 802.11n and non 802.11n clients access a WLAN network, interference easily occurs.
The access rate is degraded significantly because they adopt different modulation modes. To enable
both 802.11n and non-802.11n clients to operate correctly, enable 802.11n protection for an 802.11n
device to send RTS/CTS or CTS-to-self (the destination of the CTS packets is the device that sends
them) packets to non-802.11n devices, which then defer access to the medium.
The following cases require 802.11n protection to be enabled an 802.11n AP.
MSR80 MSR
0 900
Available
for
MSR800
No
-W and
MSR800
-10-W
Command
Command
system-view
wlan rrm
dot11g protection-mode
{ cts-to-self | rts-cts }
MSR90 MSR
0-E 930
Available
for MSR
930-W,
Available
MSR
for
930-W-G
MSR900
U, and
-E-W
MSR
930-W-G
T
30
Remarks
disabled.
Enabling 802.11g protection
reduces network performance.
Remarks
N/A
N/A
Optional.
By default, the 802.11g protection
mode is CTS-to-Self.
MSR
MSR 20
20-1X
Available Available
for for
routers routers
with a with a
SIC_WL SIC_WL
AN AN
module module
that that
supports supports
802.11n 802.11n
MSR 30 MSR 50
Available Available
for for
routers routers
with a with a
SIC_WL SIC_WL
AN AN
module module
that that
supports supports
802.11n 802.11n