H3C MSR Series Configuration Manual

Also see for MSR Series: Troubleshooting guide Command reference Configuration guide Manual Configuration guide

Contents

H3C MSR Series Configuration Manual Manual pdf 37 page image

30Step Command Remarksdisabled.Enabling 802.11g protectionreduces network performance.Configuring 802.11g protection mode802.11g 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 theRTS packet, all the devices within the coverage of the AP do not send data within the specifiedtime. Upon receiving the RTS packet, the client sends a CTS packet. This ensures that all thedevices 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 thespecified time.To configure the 802.11g protection mode:Step Command Remarks1. Enter system view. system-view N/A2. Enter WLAN RRM view. wlan rrm N/A3. Configure the 802.11gprotection mode.dot11g protection-mode{ cts-to-self | rts-cts }Optional.By default, the 802.11g protectionmode is CTS-to-Self.Configuring 802.11n protectionThe following matrix shows the feature and router compatibility:Feature MSR800MSR900MSR900-EMSR930MSR20-1X MSR 20 MSR 30 MSR 50802.11nAvailableforMSR800-W andMSR800-10-WNoAvailableforMSR900-E-WAvailablefor MSR930-W,MSR930-W-GU, andMSR930-W-GTAvailableforrouterswith aSIC_WLANmodulethatsupports802.11nAvailableforrouterswith aSIC_WLANmodulethatsupports802.11nAvailableforrouterswith aSIC_WLANmodulethatsupports802.11nAvailableforrouterswith aSIC_WLANmodulethatsupports802.11nEnabling 802.11n protectionWhen 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 enableboth 802.11n and non-802.11n clients to operate correctly, enable 802.11n protection for an 802.11ndevice to send RTS/CTS or CTS-to-self (the destination of the CTS packets is the device that sendsthem) 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.