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- Table of Contents
-
- 12-WLAN Advanced Features Configuration Guide
- 00-Preface
- 01-WLAN optimization configuration
- 02-Hotspot 2.0 configuration
- 03-WLAN probe configuration
- 04-WSA configuration
- 05-Wireless location configuration
- 06-WLAN process maintenance configuration
- 07-WLAN mesh configuration
- 08-Bonjour gateway configuration
- Related Documents
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| Title | Size | Download |
|---|---|---|
| 01-WLAN optimization configuration | 225.28 KB |
Restrictions and guidelines: WLAN optimization configuration
Configuring rejection of weak-signal clients
Configuring AP-triggered client reassociation
Configuring hidden node protection
Configuring multicast and broadcast buffering
Enabling or disabling an AP to ignore weak signals
Configuring roaming navigation
Configuring packet receiving timing adjustment
Enabling or disabling an AP to decrease the sleep interval of clients
Setting the maximum number of probe response attempts
Specifying a power supply mode for an AP to adjust the transmit power
Configuring the narrow bandwidth feature
Configuring transmit power adjustment
Configuring per-packet transmit power control
Configuring 802.11n packet suppression
Configuring fast forwarding of AP-to-client data frames
Setting the maximum retransmissions and retries for an EAPOL-Key packet
Configuring broadcast and multicast packet control
Configuring broadcast and multicast packet rate limiting
Enabling upstream ARP packet suppression
Enabling the AP to reply ARP requests of clients on behalf of the gateway
Configuring client fast keepalive
Configuring software retransmission
Configuring the packet DSCP precedence
Configuring WLAN optimization
About WLAN optimization
Proper channel planning and power control policies during WLAN deployment are important for good performance. However, in live WLAN networks, channel overlapping, collisions, and interference can easily occur because the none-overlapping channels are limited but the number of WLAN devices always increases.
The WLAN optimization features can help you improve the quality and stability of a WLAN.
Restrictions and guidelines: WLAN optimization configuration
Use WLAN optimization commands under the guidance of H3C Support.
There is no fixed combination of features for optimizing a specific WLAN. Select and adjust the features based on the application effect and WLAN performance.
The overall performance of a WLAN is determined by the network architecture as well as channel and power planning. Therefore, the WLAN optimization features cannot significantly increase the performance of a WLAN. In practice, if the features can improve the WLAN performance by 3%, the optimization is considered successful.
Configuring rejection of weak-signal clients
About this task
This feature enables an AP to reject clients with an RSSI lower than the specified threshold to release channel resources and enhance WLAN performance.
Restrictions and guidelines
After you enable this feature, wireless clients with an RSSI lower than the threshold might fail to access the WLAN.
After a client accesses the WLAN, an AP will not log off the client with an RSSI lower than the threshold but will reject the client after it disconnects from the network.
To avoid client access failures, set an appropriate RSSI value when enabling this feature.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure rejection of weak-signal clients.
option client reject { disable | enable [ rssi rssi-value ] }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, rejection of weak-signal clients is disabled.
Configuring AP-triggered client reassociation
About this task
A client with a low signal strength can roam to another AP only when its signal strength is lower than the manufacturer-defined signal strength for triggering roaming. Therefore, the client cannot obtain good network experience and service quality.
This feature enables an AP to send unsolicited deauthentication frames to a client when the signal strength of the client is lower than the specified RSSI threshold. Then, the client can reassociate with the AP or roam to another AP.
Restrictions and guidelines
To avoid unexpected client logoff, set an appropriate RSSI value when enabling this feature.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure AP-triggered client reassociation.
option client reconnect { disable | enable [ rssi rssi-value ] [ interval interval ] }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, AP-triggered client reassociation is disabled.
Configuring hidden node protection
About this task
This feature enables clients to send RTS or CTS frames before transmitting frames to avoid interference from hidden nodes.
Restrictions and guidelines
This feature takes effect only on 802.11g, 802.11n, and 802.11ac clients.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure hidden node protection.
option client hide-node-protection { disable | enable }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, hidden node protection is disabled.
Configuring multicast and broadcast buffering
About this task
With this feature enabled, the AC stops sending broadcast and multicast packets and buffers them if an associated client is in sleep state. This mechanism affects the performance of real-time multicast applications.
With this feature disabled, the AC directly sends all broadcast and multicast packets regardless of whether an associated client is in sleep state.
Restrictions and guidelines
As a best practice, set the power management parameter to the maximum value on wireless clients before you disable this feature.
Disabling this feature disables clients in sleep state from receiving some broadcast and multicast packets.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure multicast and broadcast buffering.
option broadcast-multicast-buffer { disable | enable [ limit limit ] }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, multicast and broadcast buffering is enabled.
Configuring the EMR algorithm
About this task
Each 802.11 protocol supports a set of transmission rates. For example, 802.11g supports rates 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, and 54. A wireless device dynamically selects a set of transmission rates based on the channel quality and history data.
Perform this task to enable the ensure minimum rate (EMR) algorithm to ensure the connection reliability.
Restrictions and guidelines
Only 802.11n radios support this feature.
This feature might decrease the network throughput.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure the EMR algorithm.
option rate-algorithm emr { disable | enable }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, the EMR algorithm is disabled. A radio uses a rate that ensures the maximum throughput.
Configuring channel reuse
About this task
This feature enables an AP to ignore packets with a signal strength lower than the specified channel reuse level. This mechanism enables the AP to obtain more radio resources and improves the performance of APs working on the same channel.
Restrictions and guidelines
Enabling this feature might add hidden nodes.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure channel reuse.
option channel-reuse-optimization { disable | enable level level }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, channel reuse is disabled.
Enabling or disabling an AP to ignore weak signals
About this task
An AP determines that the channel is still occupied even though the signals it detects are weak, and does not forward frames any more. Ignoring packets with a signal strength lower than the specified RSSI threshold can increase frame sending and receiving efficiency.
Restrictions and guidelines
Ignoring weak signals might cause collisions and interference among devices on the same channel.
To avoid packet receiving failures, set an appropriate RSSI value when enabling this feature.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Enable or disable an AP to ignore weak signals.
option signal-ignore { disable | enable rssi rssi-value }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, a radio does not ignore weak signals.
Configuring roaming navigation
About this task
802.11 protocols do not provide any client roaming control mechanisms and some clients cannot actively roam to APs with better signal strength.
Perform this task to decrease the transmit power for beacons or probe responses of an AP to enable clients to roam to APs with better signal strength.
If you set the transmit power for beacons or probe responses, the system uses the default transmit power to transmit other packets.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure roaming navigation.
option roam-navigation { disable | enable rssi rssi-value { beacon-power power-value | probe-response-power power-value } }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, roaming navigation is disabled.
Configuring packet receiving timing adjustment
About this task
This feature enables an AP to adjust the timing for receiving packet to achieve the optimal receiving effect.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure packet receiving timing adjustment.
option rx-opportunity-optimize { disable | enable }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, packet receiving timing adjustment is disabled.
Enabling or disabling an AP to decrease the sleep interval of clients
About this task
A wireless client in sleep state listens for traffic indication map (TIM) information in beacon frames to determine whether the associated AP has buffered packets for it. This feature enables an AP to modify the TIM information in beacon frames to decrease the sleep interval of wireless clients to improve transmission efficiency.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Enable or disable an AP to decrease the sleep interval of clients.
option keep-active { disable | enable }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, a radio does not decrease the sleep interval of clients.
Configuring channel sharing
About this task
When this feature is enabled, an AP sends or does not send packets according to whether the detected signals are stronger or weaker than the specified power level. This mechanism avoids channel collision and interference.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure channel sharing.
option channel-share { disable | enable power-level power-level }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, channel sharing is enabled.
Setting the maximum number of probe response attempts
About this task
Perform this task to reduce the number of probe responses sent by a radio to save resources and improve network performance.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Set the maximum number of probe response attempts.
option probe-response-try { disable | enable number }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, the number of probe response attempts is not limited.
Specifying a power supply mode for an AP to adjust the transmit power
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Specify a power supply mode for an AP to adjust the transmit power.
option power-supply { disable | enable { local | poe | poeplus } }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, the transmit power corresponding to the local power supply mode is used.
Configuring the narrow bandwidth feature
About this task
This feature is applicable to the communication based train control (CBTC) system that is not sensitive to bandwidth but sensitive to signal reliability.
Perform this task to limit the bandwidth in subways to meet the requirements of the CBTC system. When the bandwidth decreases from 20 MHz to 5 MHz, the signal strength is greatly improved. The low bandwidth also reduces the risks of signal interference.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure the narrow bandwidth feature.
option subway-band-width { disable | enable { 5 | 10 } }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, the narrow bandwidth feature is disabled.
Configuring transmit power adjustment
About this task
This feature enables an AP to use the adjusted transmit power to transmit packets.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure transmit power adjustment.
option capacity-adjust { disable | enable [ all ] { increase | decrease } value }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, transmit power adjustment is disabled.
Configuring per-packet transmit power control
About this task
This feature enables an AP to dynamically perform transmit power control on a per packet basis. For example, the AP reduces the transmit power when it sends packets to a client with high RSSI. This feature can reduce power consumption, radiation, and interference and improve user experience.
Restrictions and guidelines
This feature is not applicable to 5 GHz radios of 802.11ac APs.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure per-packet transmit power control.
option tpc { disable | enable [ minpower minpower | powerstep powerstep | rssistep rssistep | rssithreshold rssithreshold ] }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, per-packet transmit power control is disabled.
Configuring 802.11n packet suppression
About this task
Perform this task to suppress 802.11n packets by defining the maximum number of aggregated MPDUs and the maximum A-MPDU length. The two thresholds take effect at the same time. If either threshold is reached, the AP stops aggregation and sends the A-MPDU.
This feature prevents 802.11n clients from affecting the performance of 802.11a and 802.11b/g clients.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure 802.11n packet suppression.
option dot11n-restraint { disable | enable packet-number packet-number packet-length packet-length } [ inbound | outbound ] [ tid tid-number ]
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, 802.11n packet suppression is disabled.
Configuring fast forwarding of AP-to-client data frames
About this task
This feature enables an AP to forward data frames to clients without extra processing (such as verification and counting) to improve processing efficiency.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure fast forwarding of AP-to-client data frames.
option client fast-forwarding { disable | enable level level-value }
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, fast forwarding of AP-to-client data frames is disabled.
Setting the maximum retransmissions and retries for an EAPOL-Key packet
About this task
In Robust Security Network Association (RSNA) authentication, an AP and a client use EAPOL-Key packets in the four-way handshake to negotiate the keys. After that, the AP and the client periodically exchange EAPOL-Key packets to update the keys.
During key negotiation or update, the AP keeps retransmitting an EAPOL-Key packet until a response is received or the maximum number of retries for an EAPOL-Key packet is reached.
The system starts to count the retries when the maximum number of retransmissions is reached.
For more information about RSN key negotiation or update, see WLAN user security configuration in WLAN Security Configuration Guide.
Restrictions and guidelines
To ensure successful RSN key negotiation or update, you can increase the maximum number of retransmissions and the maximum number of retries for an EAPOL-Key packet.
Procedure
1. Enter system view.
system-view
2. Enter service template view.
wlan service-template service-template-name
3. Set the maximum number of retransmissions for an EAPOL-Key packet and the retransmission interval.
option 4-way-handshake resend max-count [ interval interval ]
By default, the maximum number of retransmissions for an EAPOL-Key packet is three, and the retransmission interval is 300 milliseconds.
4. Set the maximum number of retries for an EAPOL-Key packet and the retry interval.
option 4-way-handshake retry max-count [ interval interval ]
By default, the maximum number of retries for an EAPOL-Key packet is three, and the retry interval is 5 seconds.
Configuring broadcast and multicast packet control
About this task
After this feature is enabled in an IPv4 network, the AP performs the following tasks for the requests received from the AC:
· Answers ARP requests.
· Discards DHCP requests.
· Forwards other basic IPv4 broadcast packets and multicast packets through radio interfaces.
After this feature is enabled in an IPv6 network, the AP performs the following tasks for the requests received from the AC:
· Discards RS messages and DHCPv6 requests.
· Forwards RA messages through unicast.
· Answers NS messages.
· Forwards other basic IPv6 broadcast packets and multicast packets through radio interfaces.
Restrictions and guidelines
This feature is applicable only when software forwarding is used.
Procedure
1. Enter system view.
system-view
2. Enter AP view or AP group view.
¡ Enter AP view.
wlan ap ap-name
¡ Enter AP group view.
wlan ap-group group-name
3. Configure an AP to discard broadcast and multicast packets.
rrop anti-bmc default-action deny
By default:
¡ In AP view, an AP uses the configuration in AP group view.
¡ In AP group view, an AP forwards broadcast and multicast packets through radio interfaces.
4. Configure an AP to discard IPv6 multicast packets.
rrop anti-bmc protocol ipv6 deny
By default:
¡ In AP view, an AP uses the configuration in AP group view.
¡ In AP group view, an AP takes the default action specified by the rrop anti-bmc default-action command on IPv6 multicast packets.
5. Configure basic broadcast and multicast packet control.
rrop anti-bmc network { disable | { ipv4-simple | ipv6-simple | ipv4-and-ipv6-simple } enable }
By default:
¡ In AP view, an AP uses the configuration in AP group view. If no configuration exists in AP group view, an AP uses the configuration in system view.
¡ In AP group view, an AP uses the configuration in system view.
¡ In system view, basic broadcast and multicast packet control is enabled for an IPv4 network.
6. (Optional.) Specify the action on ARP broadcasts for basic broadcast and multicast packet control.
rrop anti-bmc protocol arp mode { proxy-reply | unicast-forward }
By default:
¡ In AP view, an AP uses the configuration in AP group view. If no configuration exists in AP group view, an AP uses the configuration in system view.
¡ In AP group view, an AP uses the configuration in system view.
¡ In system view, an AP changes the ARP broadcast packets received from the wired side to unicast packets.
7. (Optional.) Specify the action on ND broadcast packets for basic broadcast and multicast packet control.
rrop anti-bmc protocol nd mode { proxy-reply | unicast-forward }
By default:
¡ In AP view, an AP uses the configuration in AP group view. If no configuration exists in AP group view, an AP uses the configuration in system view.
¡ In AP group view, an AP uses the configuration in system view.
¡ In system view, an AP changes the ND broadcast packets received from the wired side to unicast packets.
Configuring broadcast and multicast packet rate limiting
Procedure
1. Enter system view.
system-view
2. Enter AP view or AP group view.
¡ Enter AP view.
wlan ap ap-name
¡ Enter AP group view.
wlan ap-group group-name
3. Configure broadcast or multicast packet rate limiting.
rrop anti-bmc { broadcast | multicast } rate-limit { disable | enable }
By default:
¡ In AP view, an AP uses the configuration in AP group view.
¡ In AP group view, broadcast or multicast packet rate limiting is disabled.
4. Set the maximum number of broadcast or multicast packets that an AP can send per second.
rrop anti-bmc { broadcast | multicast } rate-limit pps max-pps
By default:
¡ In AP view, an AP uses the configuration in AP group view.
¡ In AP group view, the maximum number of broadcast or multicast packets that an AP can send per second is not specified.
Enabling upstream ARP packet suppression
About this task
Perform this task to protect APs against ARP flooding attacks. If the number of ARP packets that a client sends to an AP in one second reaches the specified threshold, the AP discards all ARP packets from the client within the specified suppression period.
Restrictions and guidelines
This feature does not take effect on ARP requests for the gateway.
Procedure
1. Enter system view, AP view, or AP group view.
¡ Enter system view.
system-view
¡ Enter AP view.
wlan ap ap-name
¡ Enter AP group view.
wlan ap-group group-name
2. Enable upstream ARP packet suppression.
rrop ul-arp attack-suppression { disable |enable [ threshold threshold-value ] [ block-time time ] }
By default:
¡ In AP view, an AP uses the configuration in AP group view. If no configuration exists in AP group view, an AP uses the configuration in system view.
¡ In AP group view, an AP uses the configuration in system view.
¡ In system view, upstream ARP packet suppression is disabled.
Enabling the AP to reply ARP requests of clients on behalf of the gateway
About this task
Perform this task to enable the AP to reply ARP requests of clients on behalf of the gateway. If the MAC address of the gateway changes during a reply period, ARP failures might occur. To resolve this issue, you can specify a limit for the number of ARP requests that the AP can reply on behalf of the gateway in a reply period. When the number of ARP requests that the AP has replied reaches the limit, the AP will forward an ARP request to the gateway and perform either of the following tasks:
· If the gateway replies to the ARP request, the AP starts a new reply period with the new MAC address of the gateway.
· If the gateway does not reply to the ARP request, the AP starts a new reply period with the original MAC address of the gateway.
Restrictions and guidelines
As a best practice to reduce the gateway's service load, enable this feature when the gateway's service load is heavy or the network condition is poor.
Procedure
1. Enter system view, AP view, or AP group view.
¡ Enter system view.
system-view
¡ Enter AP view.
wlan ap ap-name
¡ Enter AP group view.
wlan ap-group group-name
2. Enable the AP to reply ARP requests of clients on behalf of the gateway.
rrop arp ap-proxy-gateway { disable | enable [ count count ] }
By default:
¡ In AP view, an AP uses the configuration in AP group view. If no configuration exists in AP group view, an AP uses the configuration in system view.
¡ In AP group view, an AP uses the configuration in system view.
¡ In system view, the AP does not reply ARP requests of clients on behalf of the gateway.
Configuring client fast keepalive
About this task
The client keepalive feature enables an AP to send keepalive packets to clients at the specified interval to determine whether the clients are online. To quickly determine whether clients are online and save radio resources, configure this feature to set the maximum number of keepalive packets that an AP can send to a client. The AP logs off a client if it does not receive any replies from the client after sending the specified number of keepalive packets to the client.
Restrictions and guidelines
This feature is mainly used in scenarios with high client mobility. If the network quality is poor, reduce the maximum number of keepalive packets that an AP can send to a client. As a best practice, use the default setting in scenarios with stable clients.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter AP group AP model view.
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Configure the client fast keepalive feature.
rrop client fast-keep-alive { disable | enable [ count count-value ] }
By default:
¡ In radio view, a radio uses the configuration in the AP group's radio view.
¡ In an AP group's radio view, the client fast keepalive feature is enabled.
Configuring software retransmission
About this task
Perform this task to configure software retransmission and set the maximum number of software retransmissions for the specified type of packets.
Procedure
1. Enter system view.
system-view
2. Enter AP view or an AP group's AP model view.
¡ Enter AP view.
wlan ap ap-name
¡ Execute the following commands in sequence to enter an AP group's AP model view:
wlan ap-group group-name
ap-model ap-model
3. Enter radio view.
radio radio-id
4. Enable software retransmission and set the maximum number of software retransmissions.
rrop software-retry { unicast [ eap ] | broadcast-multicast } enable count count
By default:
¡ In radio view, a radio uses the configuration in an AP group's radio view.
¡ In an AP group's radio view, the maximum number of software retransmissions varies by device model.
¡
Enabling client inspection
About this task
The client inspection feature enables you to view information about packets exchanged and time consumed in each stage of the client association process.
In the current software version, the client inspection feature supports only client association, client association failure, and IP address lease extension events.
Procedure
1. Enter system view.
system-view
2. Enter AP view or AP group view.
¡ Enter AP view.
wlan ap ap-name
¡ Enter AP group view.
wlan ap-group group-name
3. Enable client inspection.
wlan client inspect enable
By default, client inspection is disabled.
Configuring the packet DSCP precedence
About this task
Perform this task to configure the DSCP precedence for TCP or UDP packets with the specified port numbers. A greater DSCP precedence value represents a higher packet priority.
Procedure
1. Enter system view.
system-view
2. Enter AP view or AP group view.
¡ Enter AP view.
wlan ap ap-name
¡ Enter AP group view.
wlan ap-group group-name
3. Specify a DSCP value for TCP packets.
rrop traffic-policy priority tcp port-num-list dscp value
By default:
¡ In AP view, an AP uses the configuration in AP group view.
¡ In AP group view, no DSCP value is specified for TCP packets.
4. Specify a DSCP value for UDP packets.
rrop traffic-policy priority udp port-num-list dscp value
By default:
¡ In AP view, an AP uses the configuration in AP group view.
¡ In AP group view, no DSCP value is specified for UDP packets.
