Configuring WLAN Settings for an SSID Profile
You can configure WLAN settings using Instant UI or CLI.
In the Instant UI
To configure WLAN settings:
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In the Networks tab of the Instant main window, click the New link. The New WLAN window appears. The following figure shows the contents of WLAN Settings tab: |
Figure 1 WLAN Settings Tab
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Enter a name that uniquely identifies a wireless network in the Name (SSID) text box. |
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Based on the type of network profile, select any of the following options under Primary usage: |
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Click the Show advanced options link. The advanced options for configuration are displayed. Specify the following parameters as required. |
Table 1: WLAN Configuration Parameters
| Broadcast filtering
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Select any of the following values:
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All—When set to All, the IAP drops all broadcast and multicast frames except DHCP and ARP. |
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ARP—When set to ARP, the IAP converts ARP requests to unicast and send frames directly to the associated client. |
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Disabled— When set to Disabled, all broadcast and multicast traffic is forwarded. |
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| DTIM interval
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The DTIM interval indicates the delivery traffic indication message (DTIM) period in beacons, which can be configured for every WLAN SSID profile. The DTIM interval determines how often the IAP should deliver the buffered broadcast and multicast frames to associated clients in the powersave mode. The default value is 1, which means the client checks for buffered data on the IAP at every beacon. You can also configure a higher DTIM value for power saving. |
| Multicast transmission optimization
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Select Enabled if you want the IAP to select the optimal rate for sending broadcast and multicast frames based on the lowest of unicast rates across all associated clients. When this option is enabled, multicast traffic can be sent at up to 24 Mbps. The default rate for sending frames for 2.4 GHz is 1 Mbps and 5.0 GHz is 6 Mbps. This option is disabled by default. |
| Dynamic multicast optimization
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Select Enabled to allow IAP to convert multicast streams into unicast streams over the wireless link. Enabling Dynamic Multicast Optimization (DMO) enhances the quality and reliability of streaming video, while preserving the bandwidth available to the non-video clients.
NOTE: When you enable DMO on multicast SSID profiles, ensure that the DMO feature is enabled on all SSIDs configured in the same VLAN.
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| DMO channel utilization threshold
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Specify a value to set a threshold for DMO channel utilization. With DMO, the IAP converts multicast streams into unicast streams as long as the channel utilization does not exceed this threshold. The default value is 90% and the maximum threshold value is 100%. When the threshold is reached or exceeds the maximum value, the IAP sends multicast traffic over the wireless link.
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| Transmit Rates
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specify the following parameters:
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2.4 GHz—If the 2.4 GHz band is configured on the IAP, specify the minimum and maximum transmission rate. The default value for minimum transmission rate is 1 Mbps and maximum transmission rate is 54 Mbps. |
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5 GHz—If the 5 GHz band is configured on the IAP, specify the minimum and maximum transmission rate. The default value for minimum transmission rate is 6 Mbps and maximum transmission rate is 54 Mbps. |
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| Bandwidth Limits
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Under Bandwidth Limits:
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Airtime—Select this check box to specify an aggregate amount of airtime that all clients in this network can use for sending and receiving data. Specify the airtime percentage. |
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Each radio— Select this check box to specify an aggregate amount of throughput that each radio is allowed to provide for the connected clients. |
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Downstream and Upstream—Specify the downstream and upstream rates within a range of 1 to 65535 Kbps for the SSID users. If the assignment is specific for each user, select the Peruser checkbox. |
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| Wi-Fi Multimedia (WMM) traffic management |
Configure the following options for WMM traffic management. WMM supports voice, video, best effort, and background access categories. You can allocate a higher bandwidth for voice and video traffic than other types of traffic based on the network profile. Specify a percentage value for the following parameters:
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Background WMM share — Allocates bandwidth for background traffic such as file downloads or print jobs. |
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Best effort WMM share —Allocates bandwidth or best effort traffic such as traffic from legacy devices or traffic from applications or devices that do not support QoS. |
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Video WMM share — Allocates bandwidth for video traffic generated from video streaming. |
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Voice WMM share — Allocates bandwidth for voice traffic generated from the incoming and outgoing voice communication. |
In a non-WMM or hybrid environment, where some clients are not WMM-capable, you can allocate higher values for Best effort WMM share and Voice WMM share to allocate a higher bandwidth to clients transmitting best effort and voice traffic.
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| Content filtering
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Select Enabled to route all DNS requests for the non-corporate domains to OpenDNS on this network.
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| Band
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Select a value to specify the band at which the network transmits radio signals. You can set the band to 2.4 GHz, 5 GHz, or All. The All option is selected by default.
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| Inactivity timeout
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Specify an interval for session timeout. If a client session is inactive for the specified duration, the session expires and the users are required to log in again. The minimum value is set to 60 seconds and the default value is 1000 seconds.
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| Hide SSID
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Select this checkbox if you do not want the SSID (network name) to be visible to users.
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| Disable SSID
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Select this checkbox if you want to disable the SSID. On selecting this, the SSID will be disabled, but will not be removed from the network. By default, all SSIDs are enabled.
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| Can be used without Uplink
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Select the checkbox if you do not want to SSID profile to use uplink.
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| Max clients threshold
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Specify the maximum number of clients that can be configured for each BSSID on a WLAN. You can specify a value within the range of 0 to 255. The default value is 64.
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| Local probe request threshold
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Specify a threshold value to limit the number of incoming probe requests. When a client sends a broadcast probe request frame to search for all available SSIDs, this option controls system response for this network profile and ignores probe requests if required. You can specify a Received signal strength indication (RSSI) value within range of 0 to 100 dB.
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In the CLI
To configure WLAN settings for an SSID profile:
(Instant Access Point)(config)# wlan ssid-profile <name>
(Instant Access Point)(SSID Profile <name>)# essid <ESSID-name>
(Instant Access Point)(SSID Profile <name>)# type {<Employee> | <Voice>| <Guest>}
(Instant Access Point)(SSID Profile <name>)# broadcast-filter <type>
(Instant Access Point)(SSID Profile <name>)# dtim-period <number-of-beacons>
(Instant Access Point)(SSID Profile <name>)# multicast-rate-optimization
(Instant Access Point)(SSID Profile <name>)# dynamic-multicast-optimization
(Instant Access Point)(SSID Profile <name>)# dmo-channel-utilization-threshold
(Instant Access Point)(SSID Profile <name>)# a-max-tx-rate <rate>
(Instant Access Point)(SSID Profile <name>)# a-min-tx-rate <rate>
(Instant Access Point)(SSID Profile <name>)# g-max-tx-rate <rate>
(Instant Access Point)(SSID Profile <name>)# g-min-tx-rate <rate>
(Instant Access Point)(SSID Profile <name>)# bandwidth-limit <limit>
(Instant Access Point)(SSID Profile <name>)# per-user-bandwidth-limit <limit>
(Instant Access Point)(SSID Profile <name>)# air-time-limit <limit>
(Instant Access Point)(SSID Profile <name>)# wmm-background-share <percentage-of-traffic_share>
(Instant Access Point)(SSID Profile <name>)# wmm-best-effort-share<percentage-of-traffic-share>
(Instant Access Point)(SSID Profile <name>)# wmm-video-share <percentage-of-traffic_share>
(Instant Access Point)(SSID Profile <name>)# wmm-voice-share <percentage-of-traffic_share>
(Instant Access Point)(SSID Profile <name>)# rf-band {<2.4>|<5.0>|<all>}
(Instant Access Point)(SSID Profile <name>)# content-filtering
(Instant Access Point)(SSID Profile <name>)# hide-ssid
(Instant Access Point)(SSID Profile <name>)# inactivity-timeout <interval>
(Instant Access Point)(SSID Profile <name>)# work-without-uplink
(Instant Access Point)(SSID Profile <name>)# local-probe-req-thresh <threshold>
(Instant Access Point)(SSID Profile <name>)# max-clients-threshold <number-of-clients>
(Instant Access Point)(SSID Profile <name>)# end
(Instant Access Point)# commit apply