RBwAPR-2nD ( LTE KIT ) - no connection after LTE link down/up ( LTE state: 11 )

RouterOS General
1

Hi,

I have RBwAPR-2nD,6.41rc47. LTE interface is configure as passthrought to VLAN interface. ( ID: vlan400 ).

Regularly after some time of working connection thru LTe interface became unavailable.

The logs says in this case that:

07:00:49 lte,info LTE: not registred, state: 11 
07:00:49 interface,info LTE link down 
07:00:49 dhcp,info dhcp deassigned 10.228.136.62 from E4:8D:8C:D9:A5:FF 
07:00:50 lte,info LTE: registered, home 
07:00:51 interface,info Vlan400 link down 
07:00:51 interface,info Vlan400 link up 
07:00:52 lte,info LTE apn: internet found peer: E4:8D:8C:D9:A5:FF 
07:00:52 interface,info LTE link up 
07:01:25 dhcp,info internet assigned 10.227.45.23 to E4:8D:8C:D9:A5:FF

and after that at 7:00 o’clock there is no internet connection via vlan400. What is more, client receive dhcp addres from vlan, but traceroute die on LTE gateway.
To fix that I need to re-enable LTe interface. After that is work for couple of days. It’s repeat not so regularly ( sometimes after 5 days, sometimes after 2 days, last time it work almost 7 days without this problem )

2

which modem interface you use on the board?

3

Sorry, but I don’t understand your question fully. This device has only one modem interface (LTE). I have also only one APN configure as passthrough to virtual lan ( named vlan400)

Here is a short configuration:

/interface ethernet
set [ find default-name=ether1 ] arp=proxy-arp name=Eth
/interface vlan
add arp=proxy-arp interface=Eth name=Vlan400 vlan-id=400
/interface lte
set [ find ] mac-address=AC:FF:FF:00:00:00 name=LTE network-mode=lte pin=xxxx
/interface lte apn
set [ find default=yes ] authentication=pap passthrough-interface=Vlan400 \
    passthrough-mac=auto password=internet user=internet
4

I switched off passthrough and make single masquerade. After that it seems that problem with dropping internet access does not occur.