Troubleshooting LTE troubleshooting tree
Digi EX15 User Guide
59
n If yes, check if the IP Passthrough has been enabled.
l If yes, are there any ports that are required but cannot be
accessed on the client device? Also check if the IP
Passthrough has been enabled.
o
If yes, check the Services section of the configuration.
Verify none of the services are reserving the ports needed
to access the client device.
o
If no, check the Firewall -> Port Forwarding section of
the configuration. Verify that the desired ports are
forwarded to the appropriate IP addresses.
l If no, see if the client device is expecting a publicly reachable
and/or static IP address, check the SIM card and the Modem
section of the configuration to verify both are set up with
the proper APN.
n If no, verify Ethernet ports for connection status and check
Cat5/ Cat6 cable integrity. Is IP Passthrough mode enabled?
l If yes, clear DHCP leases by waiting 5 minutes, then reboot
the Digi EX15. If clearing DHCP leases didn't fix issue, check
that the passthrough IP works with a /30 subnet. If not,
contact carrier to change IP on SIM card (may just need a
reboot if using a standard APN).
l If no, verify the Network > Interfaces > LAN section of the
config is setup with a static IP and the DHCP server is
enabled.
Online, but with VPN issues
Reduce the Modem > MTU option in the configuration to 1400.
Alternately, if you have control of the router connected to the Ethernet
port of the Digi EX15, change that router's WAN MTU seting to 1400.
Briefly online
1. Disconnect Ethernet cable from the Digi EX15; power cycle. Wait
for the Digi EX15 to fully connect, then reconnect Ethernet port.
2. Verify the Digi EX15 is using the correct APN (e.g. on Verizon you
can connect with the standard vzwinternet APN, but the SIM
card is meant to connect with a static APN such as
ne01.vzwstatic)
3. If that didn't fix the issue, try removing the 192.168.210.254 IP
address from the Network > Interfaces > Default IP > Default
Gateway option in the config.
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