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Forum Discussion
LM1200 repeatedly dropping link
I recently purchased an LM1200-100NAS to serve as an LTE failover connection for my homelab and noticed a strange issue while setting up my pfSense-based router to use the LM1200 as a secondary WAN c...
I just bought this and have the same issue with Verizon also. It connects, passes data then all of the sudden the cell link LED goes from green and flickers red then the LAN led goes out and the LAN connection is gone. Then everything reconnects, it does this cycle over and over. Not sure where to go from here. Can't really trouble shoot when the LAN connection drops. I'm using a Unifi UDM Pro. Seems like if I plug the modem straight into the PC I don't see the issue. Modem says it has the latest FW installed. How do I fix this?
I did some additional testing with the LM1200 in router mode and it essentially behaved the same (Link drops repeatidly unless DHCP force renewed, and then after the link is up IPv4 passes traffic, yet IPv6 does not)
ivioo wrote:
I just bought this and have the same issue with Verizon also. It connects, passes data then all of the sudden the cell link LED goes from green and flickers red then the LAN led goes out and the LAN connection is gone. Then everything reconnects, it does this cycle over and over. Not sure where to go from here. Can't really trouble shoot when the LAN connection drops. I'm using a Unifi UDM Pro. Seems like if I plug the modem straight into the PC I don't see the issue. Modem says it has the latest FW installed. How do I fix this?
Interesting that you are also seeing the same behavior with the link dropping when using Unifi hardware. I hadn't mentioned it in my initial post, but I have my LM1200 connected to a port on a Unifi Pro 24 POE switch (using a POE splitter to power the LM1200). Perhaps there is some inherent issue between the LM1200 and Unifi switchports and the DHCP thing is a red herring?