Chateau LTE12 - icmp timeout

RouterOS General
1

Hi!

I’m trying to configure Chateau LTE12 for first time.

I see under interface list that lte1 is running.

 0  R default-name="lte1" name="lte1" mtu=1500 mac-address=6A:74:7F:49:55:1C pin="9009" apn-profiles=internet operator="21901" allow-roaming=no 
      network-mode=3g,lte band=""

I see that default route is added:

DAm dst-address=0.0.0.0/0 routing-table=main pref-src=“” gateway=lte1 immediate-gw=lte1 distance=2 scope=30 target-scope=10 suppress-hw-offload=no

   DAm   dst-address=0.0.0.0/0 routing-table=main pref-src="" gateway=lte1 immediate-gw=lte1 distance=2 scope=30 target-scope=10 suppress-hw-offload=no 

   DAc   dst-address=10.192.158.4/32 routing-table=main gateway=lte1 immediate-gw=lte1 distance=0 scope=10 suppress-hw-offload=no 
         local-address=10.192.158.4%lte1

I have added NAT rule:

 0    chain=srcnat action=masquerade out-interface=lte1 log=no log-prefix=""

However, running ping, results in timeout.

How to proceed? How to troubleshoot this problem on ROS 7.11.2.?

Thanks for any advice!
Regards,
Boris.

2

You may want to check your APN settings match your carrier. Sometimes a carrier will allow connection with another APN that doesn’t have internet services. If you google your carrier name and word “APN”, it will likely give you some clue. In winbox under Interface > LTE > “LTE APNs” button, if “Use Network APN” is checked, you need to uncheck that box & then set the found APN for your carrier.

You may also want make sure everything is update to date, including RouterOS, /system/routerboard/update, and the firmware update on the LTE interface itself – three things.

3

Not sure what effect “Use Network APN” has, but I unchecked this option in “LTE APNs” and icmp is working.

4

LTE needs an APN to connect. Some LTE network carriers will take anything, others require some specific settings, other still use “internet” since it a common default.

But RouterOS has no idea what your carrier’s APN is… And it has to be set to something. Sometimes carriers burn the APN information into SIM card itself, so the default on RouterOS is to read that SIM card for APN information. But that become an issue if the SIM card doesn’t have the information, or SIM-stored APN information is wrong.

So by unchecking, you’re telling it to use the APN name configured to connect to LTE, which is “internet”. If the “Use Network APN” is check it will IGNORE whatever name is configured in APN, and use the SIM card one.

5

Thanks for clarifications!