Digi 6350-SR User Manual page 52

Troubleshooting
Digi 6350-SR/6355-SR LTE Router User Guide
Solid Green
3G connectivity confirmed Should the device be on 4G?
Yes
Verify 4G coverage is available in the area.
n
Check embedded cellular modem firmware. Does it match the
n
type of carrier?
Check Modem section of Digi 6350-SR/6355-SR config. Verify
n
Access Technology is set to Auto.
Contact carrier to verify SIM card supports 4G LTE. SIM card may
n
need a custom APN for 4G.
No
Test for Internet access on the device connected to the Digi 6350-
SR/6355-SR.
Online
Does the device has a usable IP Address?
If no, see if the client device is expecting a publicly reachable
n
and/or static IP address, check the SIM card and the Modem
section of the Digi 6350-SR/6355-SR configuration to verify both
are set up with the proper APN.
Are there any ports that are required but cannot be accessed on
the client device? Also check if the IP Passthrough has been enabled.
If yes, check the Services section of the configuration. Verify
n
none of the services are reserving the ports needed to access
the client device.
If no, check the Firewall -> Port Forwarding section of the
n
configuration. Verify that the desired ports are forwarded to the
appropriate IP addresses.
Offline
Is the client device receiving a DHCP address from the Digi 6350-
SR/6355-SR?
LTE troubleshooting tree
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