Configure Cradlepoint Advanced WiFi Settings

Jesse Rothschild

How do I configure advanced WiFi Settings?

This is the product manual section for advanced WiFi Settings. To edit these settings, go to Networking>Local Networks>WiFi Radio #1 (2.4GHz) or WiFi Radio #2 (5GHz)

When you select either of the WiFi tabs (2.4 GHz or 5 GHz) in the Local Networks section, you have several additional options for configuring your wireless LANs under the WiFi Settings

configure advanced WiFi Settings

  • Region Selection: This allows an NCM user to select the channels visible in the UI based on geographic region. This will not allow a router to select a channel that is not allowed in the region it is programmed for.
  • Channel Selection Method: How a WiFi channel is selected
    • User Selection – Manually set the channel.
    • Random Selection – The router randomly sets the channel.
    • Smart Selection (Default) – Scans to determine the lowest interference WiFi channel.
  • Channel: (Shows if User Selection is selected.) The WiFi channel corresponds to a frequency the router uses to communicate with other devices. For 2.4 GHz, the range is 1 to 11, and 1, 6, and 11 do not overlap each other. If a WiMAX modem is attached, a higher number channel will increase the chance the router’s WiFi and modem’s WiMAX radios will conflict with each other, which may result in lower throughput. Select a channel from the dropdown list:
    • 1 (2412 MHz)
    • 2 (2417 MHz)
    • 3 (2422 MHz)
    • 4 (2427 MHz)
    • 5 (2432 MHz)
    • 6 (2437 MHz)
    • 7 (2442 MHz)
    • 8 (2447 MHz)
    • 9 (2452 MHz)
    • 10 (2457 MHz)
    • 11 (2462 MHz)
  • For 5.0 GHz, the ranges are 36 to 64 and 149 to 165. These channels do not interfere with a WiMAX modem.
    • 36 (5180 MHz)
    • 40 (5200 MHz)
    • 44 (5220 MHz)
    • 48 (5240 MHz)
    • 149 (5745 MHz)
    • 153 (5765 MHz)
    • 157 (5785 MHz)
    • 161 (5805 MHz)
    • 165 (5825 MHz)
  • Channel Selection Schedule: When using the “Smart” channel selection, this controls whether the router will periodically rescan for a better channel and change to it. Select from “Once,” “Daily,” “Weekly,” or “Monthly.” Note that there may be a momentary WiFi disconnection while the channel changes.
  • Client Timeout: If the access point is not able to communicate with the client it will disconnect it after this timeout (in seconds)
    • Note: if you set the value to zero the client will not timeout (Supported on NCOS 6.5.4+)
  • TX Power: Normally the wireless transmitter operates at 100% power. In some circumstances, however, there might be a need to isolate specific frequencies to a smaller area. By reducing the power of the radio, you can prevent transmissions from reaching beyond your corporate/home office or designated wireless area
  • RTS Threshold: When an excessive number of wireless packet collisions are occurring, wireless performance can be improved by using the RTS/CTS (Request to Send/Clear to Send) handshake protocol. The wireless transmitter will begin to send RTS frames (and wait for CTS) when data frame size in bytes is greater than the RTS Threshold. This setting should remain at its default value.
  • Fragmentation Threshold: Wireless frames can be divided into smaller units (fragments) to improve performance in the presence of RF interference and at the limits of RF coverage. Fragmentation will occur when frame size in bytes is greater than the Fragmentation Threshold. This setting should remain at its default value. Setting the Fragmentation value too low may result in poor performance.
  • DTIM: A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast messages. When the wireless router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Wireless clients detect the beacons and awaken to receive the broadcast and multicast messages. The default value is 1. Valid settings are between 1 and 255.
  • Beacon: Beacons are packets sent by a wireless router to synchronize wireless devices. Specify a Beacon Period value between 20 and 1000 milliseconds.
  • Short Slot: Slot Time is the period wireless clients use in determining if the channel is free for transmission. Enabling this value allows clients that can utilize a shorter time to do so. Disabling this option forces all clients to use a longer backoff check and thus may reduce network throughput while reducing the number of transmission collisions.
  • Wireless Mode: Select the WiFi clients the router will be compatible with. Greater compatibility is a tradeoff with better performance. For greatest compatibility with all WiFi devices, select “802.11 a/b/g/n”. For best performance, connect with only other 802.11n-compatible devices and select “802.11 n.”
    • 802.11 b
    • 802.11 b/g
    • 802.11 a/b/g/n
    • 802.11 b/g/n
    • 802.11 n
  • Protection: In Auto mode, the AP will use protection to improve performance in mixed-mode networks. Turn protection off to maximize throughput with 802.11n clients.
  • Airtime Fairness: will attempt to balance air time between faster and slower WiFi clients to more fairly distribute bandwidth
  • Channel Width: Selects whether the router uses a single 20 MHz channel to send/receive, or uses two adjacent 20 MHz channels to create a 40 MHz channel. Higher performance is possible with the 40 MHz channel. Selecting Auto is generally best. Enabling WiFi as WAN will force 20 MHz only mode.
  • Extended Channel: When operating in higher than 20 MHz mode the access point will use an extended channel either below or above the current channel. Optimal selection will depend on the channels of other networks in the area.
  • MCS: 802.11n uses multiple Modulation Coding Schemes to enable higher throughput in various environments. Since clients can dynamically change rates depending on environment, selecting Auto is generally best.
  • Short GI: Short GI is an optimization for shortening the interval between transmissions. May be incompatible with older clients.
  • RADIUS Timeout: (Default: 3600 seconds) When using an Enterprise security mode clients will be forced to re-authenticate with the RADIUS server at this interval in seconds. This allows administrators to revoke access so when an attached client’s authentication expires, the client must re-authenticate.
  • RADIUS Retry: (Default: 60 seconds) When using an Enterprise security mode, if a RADIUS query fails to receive a response from the server it will delay by this interval (in seconds) before attempting another query. This helps protect the network from floods of authentication requests if the RADIUS server is temporarily unreachable.

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