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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...
Having the same issue on Google Fi (which is actually T-Mobile, but a different APN).
- LM1200 is set as Router mode or Bridge Mode: Bridge Mode
- Carrier Name: Google Fi (on T-Mobile)
- APN name: h2g2
- IP Type: IPv4
- Is LM1200 connecting to WAN backhaul: No
- Router client brand and model: Netgate 7100 1U (pfSense Plus 21.05.1)
- Broadband modem brand and model: N/A (Fiber ONT)
Logs from pfSense:
Nov 21 01:01:55 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 01:02:17 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 02:50:06 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 02:50:28 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 05:14:39 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 05:15:01 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 07:02:51 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 07:03:13 pfsense kernel: e6000sw0port2: link state changed to UP
Serdar wrote:- LM1200 is set as Router mode or Bridge Mode: Bridge Mode
- Carrier Name: Google Fi (on T-Mobile)
- Router client brand and model: Netgate 7100 1U (pfSense Plus 21.05.1)
Logs from pfSense:
Nov 21 01:01:55 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 01:02:17 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 02:50:06 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 02:50:28 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 05:14:39 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 05:15:01 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 07:02:51 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 07:03:13 pfsense kernel: e6000sw0port2: link state changed to UP
I am seeing the same thing on Verizon with pfSense, but was able to temporarily work around it by manually releasing and relinquishing the DHCP lease, then forcing a renew. Sometimes it requires doing this a few times for it to work, but once the link stabilizes, it stays up.
Serdar wrote:
Having the same issue on Google Fi (which is actually T-Mobile, but a different APN).
- LM1200 is set as Router mode or Bridge Mode: Bridge Mode
- Carrier Name: Google Fi (on T-Mobile)
- APN name: h2g2
- IP Type: IPv4
- Is LM1200 connecting to WAN backhaul: No
- Router client brand and model: Netgate 7100 1U (pfSense Plus 21.05.1)
- Broadband modem brand and model: N/A (Fiber ONT)
Logs from pfSense:
Nov 21 01:01:55 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 01:02:17 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 02:50:06 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 02:50:28 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 05:14:39 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 05:15:01 pfsense kernel: e6000sw0port2: link state changed to UP Nov 21 07:02:51 pfsense kernel: e6000sw0port2: link state changed to DOWN Nov 21 07:03:13 pfsense kernel: e6000sw0port2: link state changed to UP
For your case, since the connection is down and up in a certain intervals, please try to enable the Keepalive setting and set the interval smaller than what you see in the log. Some networks can reset the data connection if there is no data traffic for a certain period of time. Enabing Keepalive feature will keep the data connection alive. Please let me know whether this helps or not.
Thanks
