RB411 and Sierra MC8705

Hi all,

I’ve got this harware for a mobile hotpot. Sierra MC8705 is supported by Mikrotik and I expected no problems, but I am unable to make it work.

Card is recognized OK, and it see it in /ports and /system resources. The LTE interface goes up and shows a nice AT command dialog.

20:23:18 async,debug lte1: sent AT+CFUN=0 
20:23:18 async,debug lte1: rcvd OK 
20:23:18 async,debug lte1: sent AT+CFUN=1 
20:23:18 async,debug lte1: rcvd OK 
20:23:18 async,debug lte1: sent AT+CPIN? 
20:23:18 async,debug lte1: rcvd +CPIN: READY 
20:23:18 async,debug lte1: rcvd  
20:23:18 async,debug lte1: sent AT+CGDCONT=1,"IP","ac.vodafone.es" 
20:23:18 async,debug lte1: rcvd OK 
20:23:18 async,debug lte1: sent AT$QCPDPP=1,2,"vodafone","vodafone" 
20:23:18 async,debug lte1: rcvd OK 
20:23:18 async,debug lte1: sent AT+COPS=2 
20:23:18 async,debug lte1: rcvd OK 
20:23:20 async,debug lte1: sent AT+COPS=0,0,,2 
20:23:20 async,debug lte1: rcvd OK 
20:23:20 async,debug lte1: sent AT!SCACT=1,1 
20:23:29 async,debug lte1: rcvd OK 
20:23:30 lte,debug config ok 
20:23:33 async,debug lte1: sent AT+COPS? 
20:23:33 async,debug lte1: rcvd +COPS: 0,0,"vodafone ES",2 
20:23:33 lte,debug network registration state: 1 access technology: 2 
20:23:33 interface,info lte1 link up 
20:23:33 route,debug,event Interface change 
20:23:33 route,debug,event     interface=lte1 
20:23:33 route,debug,event     status=UP 
20:23:33 route,debug,event     mtu=1500 
20:23:33 route,debug,event Interface change 
20:23:33 route,debug,event     interface=lte1 
20:23:33 route,debug,event     status=UP,RUNNING 
20:23:33 route,debug,event     mtu=1500

But after that I have no connection to Internet.

The card configuration is shown in the screenshot below:

[admin@MikroTik] /interface lte> print
Flags: X - disabled, R - running 
 0 X  name="lte1" mtu=1500 mac-address=26:CA:A7:46:01:07 pin="5691" 
      apn="ac.vodafone.es" user="vodafone" password="vodafone" network-mode=3g 
      authentication=chap 

[admin@MikroTik] /interface lte> info lte1 
             status: call in progress
         pin-status: no password required
      functionality: full
       manufacturer: Sierra Wireless, Incorporated
              model: MC8705
           revision: T3_5_2_1AP R517 CNSZXD00000128 2012/02/07 13:03:25
   current-operator: vodafone ES
     current-cellid: 44436007
  access-technology: 3G
     signal-strengh: -83 dBm
   frame-error-rate: n/a
             earfcn: (band IMT2000, channel 10738)
               imei: 353567041330094
               imsi: 214019818036263
               uicc: n/a

mikrotik2.png
I’ve spent several days with no progress. I’ve changed the APN as Vodafone in Spain has several possible apns with no luck.

Any clue? I appreciate any pointers.

I think you need to put a DHCP client on LTE interface.

This is embarrasingly true!! :smiley: :smiley: :smiley:

Thanks very much. You made my day!