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WiFi as WAN Issues with Select Hotspot Enabled Devices

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Friday, 26 August 2011

WiFi as WAN Issues with Select Hotspot Enabled Devices

(Cradlepoint WiFi as WAN Selection)

High speed mobile broadband has become more mainstream and widely available throughout most of the country. Several manufactures have been releasing MiFi type devices and smartphones, which offer a mobile hotspot feature allowing you to get multiple computers online. This can be great for those needing quick access to a handful of devices, but if you're looking to create a more substantial network (wired/wireless) you'll need a compatible 3G/4G router. This allows you to remove the 3,5 or 8 user limitation and gives you the option of integrating them into your home network as a failover solution. Traditionally this was done through a direct phone tether, however, this required most router manufactures to physically code firmware updates to support the phones.

This leads us to WiFi as WAN, which doesn't rely on any type of software to physically establish a connection between your cellular device and router. Companies like Pepwave, Cradlepoint and WiFi Ranger quickly jumped on board to develop solutions to streamline mobile connections into more advanced networks. This concept seemed to work really well, however, we've noticed that select devices WILL NOT connect via WiFi due to a new problem with IP conflicts. With so many phones now supporting mobile hotspots either officially or unofficially, it's near impossible to know for sure without each device to test.

The problem resides in the IP address that the phone is using and how the router uses DHCP to automatically assign an IP address for the device. Some of these hotspot enabled devices are outside the IP range or have wireless bridging disabled to prevent the connection from being established. There are some scenarios where this can be worked around by manually entering a static IP instead of relying on DHCP, but this option isn't present in Cradlepoint routers. In fact, the Pepwave Surf Mini or Surf 400 are the only models that allow you to assign a static IP for the WiFi connection. If you have either a hotspot enabled phone or MiFi type data card, we recommend either Pepwave or the WiFi Ranger, as they've proven to accept the largest range of hotspot enabled devices.

Devices known to fail WAW connections:
  • Sprint Overdrive Pro - Does not work in Cradlepoint CTR35, MBR95, CBR400, MBR1400 (Works in Pepwave and WiFi Ranger Products): Default Gateway 192.168.0.1
  • Sprint EVO - Does not work in Cradlepoint CTR35, MBR95, MBR1400 (Untested on other routers)
  • AT&T/Verizon iPhone - Does not work in Cradlepoint CTR35, MBR95, CBR400, MBR1400 (Works in Pepwave and WiFi Ranger Products): Default Gateway 172.20.10.1
  • Samsung Infuse - Does not work in Cradlepoint CTR35, MBR95, CBR400, MBR1400 (Untested on other routers)
  • Verizon Galaxy Tab - Does not work in Cradlepoint CTR35, MBR95, MBR1400 (Untested on other routers): Default Gateway 192.168.43.1
  • T-Mobile G2 - Does not work in Cradlepoint CTR35 (Untested on other routers)
  • Sprint MiFi 4082 Does not work in MBR95 (Untested on other routers): Default Gateway 192.168.1.1

Please let us know what devices are working for you on our EVDOForums - What hotspot enabled devices works for you [success/failure]?


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Last Updated ( Friday, 26 August 2011 )
 
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