3G gateway with RB.912UAG and huawei e173 u2

RouterOS Wireless Networking
1

Hi! I wan to make 3g gateway with huawei usb dongle e173 u2

a.) I’ve got link running; (no dialondemand, no addroute)
got an IP address, but pings do not go throw.

b.) I’ve got link running; with dialondemand, with addroute
got an IP address, but pings do not go throw. :frowning:

That’s the matter?!

/system routerboard pr
   model: 912UAG-5HPnD
   current-firmware: 3.07
routeros 5.25

 system resource usb print
 # DEVICE VENDOR                   NAME                  SPEED                
 0 1:1                             RB400 EHCI            480 Mbps             
 1 1:5    HUAWEI Technology        HUAWEI Mobile         480 Mbps

/interface ppp-client>
3  R name="ppp_3G_usb" max-mtu=1500 max-mru=1500 mrru=disabled port=usb1
      data-channel=0 info-channel=0 apn="internet.lmt.lv" pin="" user=""
      password="" profile=default phone="*99#" dial-command="ATDT"
      modem-init="" null-modem=no dial-on-demand=no add-default-route=no
      use-peer-dns=no keepalive-timeout=0 allow=pap,chap,mschap1,mschap2

/ip ad pr
 2 D xx.88.107.133/32   xx.112.112.209  ppp_3G_usb

route @config a):
 /ip ro pr
 #      DST-ADDRESS        PREF-SRC        GATEWAY            DISTANCE
 1   S  0.0.0.0/0                          ppp_3G_usb                1
 2 ADC  xx.112.112.209/32  xx.88.107.133   ppp_3G_usb                0
 4 ADC  192.168.50.0/24    192.168.50.1    ether1-local              0
2

Could someone post .cfg for LMT or TELE2 .lv or .ee or what ever, what might give a hint to solve…?

This is meant a kind of fail-over connection, but the first, let’s get a 3g working at least.

3

Do you have NAT masquerading turned on?
Also, you are not using Peer DNS? Why not use your ISPs?

4

Yes, I did (but it doesn't concern pinging from within router).

Strangest thing is, that same cfg, started to work next day.

Is it important - plug modem in working router or start RouterOs with modem plugged in?!

5

Doesn’t make a difference really.