Difficulties in connecting to the internet with a 3g router

RouterOS Beginner Basics
1

Hi, All
i have been trying for several days now to connect my lan to the internet through Mikrotik OS 3.x then a 3g router (ericsson w25) i dont know if am doing something wrong below is my network diagram and system reports …thanks in advance.

[admin@MikroTik] > ip address print
Flags: X - disabled, I - invalid, D - dynamic 
 #   ADDRESS            NETWORK         BROADCAST       INTERFACE              
 0   ;;; default configuration
     192.168.88.1/24    192.168.88.0    192.168.88.255  ether1                 
 1   ;;; Public
     192.168.1.2/24     192.168.1.0     192.168.1.255   ether1                 
 2   ;;; Lan
     192.168.10.1/24    192.168.10.0    192.168.10.255  ether2




[admin@MikroTik] > ip route print
Flags: X - disabled, A - active, D - dynamic, 
C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, 
B - blackhole, U - unreachable, P - prohibit 
 #      DST-ADDRESS        PREF-SRC        G GATEWAY              DISTANCE IN..
 0 A S  0.0.0.0/0                          r 192.168.1.1          1        et..
 1 ADC  192.168.1.0/24     192.168.1.2                            0        et..
 2 ADC  192.168.10.0/24    192.168.10.1                           0        et..
 3 ADC  192.168.88.0/24    192.168.88.1




[admin@MikroTik] > ip firewall nat print
Flags: X - disabled, I - invalid, D - dynamic 
 0   chain=srcnat action=masquerade out-interface=ether1

netdiag.jpg

2

i think you need to configure your mikrotik dhcp as cleint according to your router which have dhcp server

3

I did try that but with no success…am out of ideas

4

It’s kind of hard to troubleshoot this with the information you’re giving.

From the laptop, can you ping the RouterOS router (192.168.10.1)?
From the RouterOS router, can you ping the 3G router (192.168.1.1)?
From the laptop, can you ping the 3G router (192.168.1.1)?

How are you testing, what are you expecting the test results to be, and what result are you getting instead?

5

thanks…from the laptop i can ping the router os router 192.168.10.1, i connect to the router with winbox on that ip
from the the router i can ping the 3g router but only from the ether1 interface, from ether2 interface doesnt work
From the laptop i cant ping the 3g router 192.168.1.1
even when in the router i can ping google.com when i use the ether1 interface.
please help me

6

That doesn’t make sense. Post the output of “/ip address print detail”, “/ip route print detail”, “/interface print”, and “/ip firewall export”.

Also, just to confirm, in the network diagram you posted do you have ether1 and ether2 swapped? The diagram doesn’t match your other information.

7

thanks buddy let me check then get right back to you

8

this is detailed info… hope this helps

[admin@MikroTik] > ip address print detail
Flags: X - disabled, I - invalid, D - dynamic 
 0   ;;; default configuration
     address=192.168.88.1/24 network=192.168.88.0 broadcast=192.168.88.255 
     interface=ether1 actual-interface=ether1 

 1   ;;; Public
     address=192.168.1.2/24 network=192.168.1.0 broadcast=192.168.1.255 
     interface=ether1 actual-interface=ether1 

 2   ;;; Lan
     address=192.168.10.1/24 network=192.168.10.0 broadcast=192.168.10.255 
     interface=ether2 actual-interface=ether2 
[admin@MikroTik] > ip route print detail
Flags: X - disabled, A - active, D - dynamic, 
C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, 
B - blackhole, U - unreachable, P - prohibit 
 0 A S  dst-address=0.0.0.0/0 gateway=192.168.1.1 interface=ether1 
        gateway-state=reachable distance=1 scope=30 target-scope=10 

 1 ADC  dst-address=192.168.1.0/24 pref-src=192.168.1.2 interface=ether1 
        distance=0 scope=10 

 2 ADC  dst-address=192.168.10.0/24 pref-src=192.168.10.1 interface=ether2 
        distance=0 scope=10 

 3 ADC  dst-address=192.168.88.0/24 pref-src=192.168.88.1 interface=ether1 
        distance=0 scope=10 
[admin@MikroTik] > interface print
Flags: D - dynamic, X - disabled, R - running, S - slave 
 #     NAME                                              TYPE             MTU  
 0  R  ether1                                            ether            1500 
 1  R  ether2                                            ether            1500 
[admin@MikroTik] > ip firewall export
# jul/22/2011 05:25:11 by RouterOS 3.20
# software id = 7PEZ-EYN
#
/ip firewall connection tracking
set enabled=yes generic-timeout=10m icmp-timeout=10s tcp-close-timeout=10s \
    tcp-close-wait-timeout=10s tcp-established-timeout=1d \
    tcp-fin-wait-timeout=10s tcp-last-ack-timeout=10s \
    tcp-syn-received-timeout=5s tcp-syn-sent-timeout=5s tcp-syncookie=no \
    tcp-time-wait-timeout=10s udp-stream-timeout=3m udp-timeout=10s
/ip firewall nat
add action=masquerade chain=srcnat comment="" disabled=no out-interface=\
    ether1
/ip firewall service-port
set ftp disabled=no ports=21
set tftp disabled=no ports=69
set irc disabled=no ports=6667
set h323 disabled=no
set sip disabled=no ports=5060,5061
set pptp disabled=no
[admin@MikroTik] >
9

any body ???

10

According to what you’ve posted it should be working. Your configuration looks good. I don’t know how to help you.

11

thanks sir, if i could just ping the interface where the 3g router connects to the ros (ether1) from my computer i think my problem should be over…thats my problem now i keep getting ping timeouts when i ping ether1 even in the same router frm ether2…

12

help pleeeaaaasssssse am stuck :frowning:

13

What petrn suggested in your other thread about the same problem will probably work.

14

Thanks fewi