Network Failover with Huawei E3276 USB Wireless Modem

Network Failover with Huawei E3276 USB Wireless Modem

The E3276 USB wireless modem reports itself as a network device. So you will have to add a network connection in Nodegrid that binds to it. Here are the steps:

1. Login as admin in the Web UI and browse to Network, then Connections. Click Add and configure following the screenshot below. Then click Save.

- Uncheck 'Connect Automatically' otherwise the modem will keep the cellular data channel opened permanently. You can connect manually using the button 'Up Connection' on the Network::Connections table, or configuring the new connection, ETH2, as a fallback from any primary interface.

2. Select the ETH2 connection in the connections table, then click 'Up Connection'. The LED in the USB E3276 modem will turn blue indicating the connection is established.

3. By default, the E3276 modem is set with IP address and assigns IP to the new interface in Nodegrid. You can open a CLI connection to Nodegrid as admin, then ping the IPs to confirm networking is ok:

Nodegrid 3.1.11 May 25 2016 - 00:54:07 nodegrid /dev/ttyS0

nodegrid login: admin


[admin@nodegrid /]# shell ping

PING ( 56 data bytes

64 bytes from seq=0 ttl=64 time=1.197 ms

[admin@nodegrid /]# shell ping -I eth2

PING ( 56 data bytes

64 bytes from seq=0 ttl=54 time=1873.743 ms

4. You may need to configure Dial Up or Networking parameters directly in the E3276 to comply with your local provider. You can do that by plugin it on your laptop, or create a device in Nodegrid for that.

Then click on Access icon and the Web button next to the E3276 device.

Enable Network failover by checking its checkbox:

Note: The Huawei E3276 4G LTE USB modem is supported in version 3.1.11 and later.

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