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Configuring 802.11g protection, Enabling 802.11g protection – H3C Technologies H3C MSR 50 User Manual

Page 38

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29

Feature

MSR 900 MSR 930 MSR

20-1X

MSR 20

MSR 30

MSR 50

MSR

2600

802.11n No

Available
for MSR
930

(WLAN &

HSPA+),
MSR 930

(WLAN &

EVDO),
and MSR

930

(WLAN)

Available
for routers
with a

SIC_WLA

N module
that

supports

802.11n

Available
for routers
with a

SIC_WLA

N module
that

supports

802.11n

Available
for routers
with a

SIC_WLA

N module
that

supports

802.11n

Available
for routers
with a

SIC_WLA

N module
that

supports

802.11n

Available
for routers
with a

SIC_WLA

N module
that

supports

802.11n

The configured maximum bandwidth does not take effect on radios enabled with intelligent bandwidth
assurance. To validate the configured maximum bandwidth, you must disable the radios and then enable

them.

Step Command

Remarks

134.

Enter system view.

system-view

N/A

135.

Enter WLAN RRM view.

wlan rrm

N/A

136.

Configure the maximum

bandwidth.

802.11b:

dot11b max-bandwidth

11b-bandwidth

802.11g:

dot11g max-bandwidth

11g-bandwidth

802.11n:

dot11nmax-bandwidth

11n-bandwidth

By default:

The maximum bandwidth for

802.11b is 7000 kbps.

The maximum bandwidth for

802.11g is 30000 kbps.

The maximum bandwidth for
802.11n is 180000 kbps.

Configure the maximum
bandwidth close to and smaller

than the upper limit of the actual

traffic.

Configuring 802.11g protection

Enabling 802.11g protection

When both 802.11b and 802.11g clients access a WLAN network, interference easily occurs and access

rate is greatly degraded because they adopt different modulation modes. To enable both 802.11b and

802.11g clients to operate correctly, enable 802.11g protection for an 802.11g device to send Request to

Send/Clear to Send (RTS/CTS) or CTS-to-self (the destination of the CTS packets is the device that sends
them) packets to 802.11b devices, which defer access to the medium.
The following cases require 802.11g protection to be enabled on an 802.11g AP.

An 802.11b client associates with the 802.11g AP. In this case, 802.11g protection is always enabled
without manual intervention.

The 802.11g AP detects an overlapping 802.11b BSS or some 802.11b packets that are not destined
to it. To enable 802.11g protection, issue the dot11g protection enable command.

This manual is related to the following products: