Summary: I have 3 MP70s that have come from Sierra Wireless that are all failing connection to the local admin page (whether via ethernet or USB). All three are responding with a [RST, ACK] packet (resetting the handshake) to the [SYN] packet from the laptop. One of the devices is brand new from the factory. Factory resets doesn’t change anything in the wireshark packet capture - still get [RST, ACK]. Anybody have any idea what is going on?
Of the 3 - 1 was newly purchased, 2 warranty repaired for being unresponsive with 4.14 firmware. I can’t access admin control of any of the devices to see what firmware they are one, but all three came directly from manufacturer or warranty repair. The other 8 units in my fleet are perfectly happily. Different tried laptops / cables doesn’t matter, the 3 MP70s refuse connection to local admin and are unconfigurable. Same laptops / cables work fine on the rest of my fleet units. I WireSharked the TCP handshake and found [RST, ACK] responsive from the router to all the [SYN] packets from the laptop.
Log of troubleshooting with no change:
turned off windows defender
turned off windows firewall
Network Reset commands ran:
netsh int ip reset resettcpip.txt
netsh winhttp reset proxy
netsh int ip reset
netsh winsock reset
Tried USB to .14 address
Tried different laptops / cables
Tried Edge / Chrome / Mozilla, tried HTTPS and HTTP
Tried setting manual IP address and DNS entries in ethernet port