MP70s not completing TCP Handshake to access local Admin page

AirLink Routers
1

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?

220224 - MP70 TCP Handshakes
220224 - MP70 TCP Handshakes1356×796 315 KB

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
    ipconfig /release
    ipconfig /renew
    ipconfig /flushdns
    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

2

Hi Curtis,

Could you please describe the LEDs’ behavior after the device boots up?

Thanks,

3

jerdung - ALL LEDS are solid green (network of course blinks with traffic) but no WiFi LED.

As far as I can tell they are all receiving cellular signal. Should mention all my testing is well over the 5 minutes or so needed to let the SIM card initialize.

4

Hi Curtis,

Please follow this resolved topic.

If your issue still happens, please download the latest document below and follow it step-by-step carefully on pages 19&20 in order to put your device in recovery mode.

https://source.sierrawireless.com/resources/airlink/software_reference_docs/airlink-mp-series—configuration-guide/#sthash.Jr3xHmhR.dpbs

Thanks,

5

jerdung - the issue is that 4.15 now uses port 9443 instead of 9191 for gateway configuration.

Used port 9443 over ethernet and works fine.

You can close this.