How to setup internet sharing with iBurst Modem

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soundbase

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I am trying to setup internet sharing on my USB iBurst modem. I am using a Mac. I have enabled sharing on the Mac, and then I have used a crossover cable to my Macbook. And this is all working. But I want to try use my Wireless ADSL router instead for the sharing as opposed to the crossover cable. Is this possible? I merely want to use the switch and the wireless on the router.

When I was using the crossover cable, I had to add some DNS servers to my Macbook for it to receive internet access through the sharing.

On the ADSL router, I have given the Router a fixed IP address under the LAN settings, and put in a primary and secondary DNS server (41.208.247.5, 196.46.70.10. These seemed to work when I used the crossover cable).

Under the Internet tab, I have set the encapsulation to bridge mode. Is this correct?

On the Macbook it is picking up an IP address on the right range (the Macbook is set to DHCP, not manual). And it is also picking up the DNS servers.

I still have no access on the macbook. Is there something else I am doing wrong? Anything else I need to setup on the router for it to provide Internet access to my Macbook?
 
Suggestion : set and enable DHCP on the router

Then you just enable DHCP on your Mac's - no need to struggle with IP's etc.

Should you need a static DHCP address, the router should also have a function to cater for that - simply put the MAC address and IP you want to assign to that specific IP into the router's DHCP config and that's that.
 
Hi Librarian. The router is actually setup as DHCP enabled. I had it first with a fixed IP address. Now it has DHCP enabled. And my other machines are picking up IP's on the correct range. But still no internet access. Even though I have shared my iBurst connection through my ethernet port. It was working with the crossover cable, so there must just be something I am missing on the router somewhere.
 
But if you use the router (which in itself is has dhcp functionality) then I think you need to enable something on the router that tells it that it mustn't act as a dhcp server and must act as a dhcp extension or something like that

I think its called dhcp relay server.
 
DHCP server relay

I can choose DHCP relay. Then I need to put an IP address. Is this the IP address of the router or the IP address of the Machine that has the iBurst modem connected to it?

I have used both, and I still cannot share my iBurst connection. The switch part, and DHCP are working fine. The router is assigning each machine an IP on the range. But My Mac with the iBurst USB Modem is not sharing its internet connection through the switch to the macbook.
 
Have you tried using the ip of the mac sharing the connection as well as the router's ip itself as the dns in the macbook?

Also, can you ping the mac from the macbook?
 
Does the iBurst router connect to iBurst, or how do you initiate your PPPoE connection?

Suppose your iBurst router can handle (and initiate) PPPoE, and it's IP is 192.168.0.10... then :

DHCP settings :

Gateway IP : 192.168.0.10
DNS servers -use openDNS IP :
208.67.222.222
208.67.220.220
DHCP range : 192.168.0.100 to 192.168.0.200

Then it should work.
 
The other options I have under the LAN settings are:

Dynamic Route: Direction:

Multicast:

IGMP Snoop:

Do any of these need to be changed?
 
To initiate the iBurst connection, I have created a PPoE connection on my Mac (the mac creates a virtual ethernet connection for the iBurst). I click connect (like a dial-up type connection, and then it connects to iBurst. I have shared this connection through my ethernet.

I cannot change the IP settings that iBurst creates. iBurst assigns you an IP once it connects.
 
Last edited:
soundbase said:
To initiate the iBurst connection, I have created a PPoE connection on my Mac (the mac creates a virtual ethernet connection for the iBurst). I click connect (like a dial-up type connection, and then it connects to iBurst. I have shared this connection through my ethernet.

I cannot change the IP settings that iBurst creates. iBurst assigns you an IP once it connects.
Click to expand...

I think he means you must use that ip adress as an example. Just substitute hes with yours.
 
Yes, I have tried using the IP address of the mac that is sharing the connection, plus the router's IP address as DNS.

I can ping the router, and the mac that is sharing the address from my Macbook. I just cannot ping any outside addresses.
 
Ok, the only way I can get it to work is to assign fixed IP addresses to my Mac with the iBurst connection, and the Macbook. So I am still having them go through the ADSL router, but they have fixed IP addresses.
 
I have an MTN USB modem and share as follows:

MASTER MAC:
Sys Prefs >> Sharing >> [x] Internet Sharing
--Share your connection from {HAUWEI Mobile}
(the MTN modem)
Sys Prefs >> Network >> Airport >> Advanced...
TCP/IP Tab:
Configure Manually
IP Address: 192.168.1.1
Subnet: 225.225.225.240
Router: 192.168.1.1
DNS Tab:
I use opendns

SLAVE MAC
Sys Prefs >> Network >> Airport >> Advanced...
TCP/IP Tab:
Configure Manually
IP Address: 192.168.1.2
Subnet: 225.225.225.240
Router: 192.168.1.1
DNS Tab:
I use opendns

WIRELESS ROUTER
IP Address: 192.168.1.3
Subnet, router, DNS as above
No bridge mode or anything else
secured obviously

Works just fine - is this what you are wanting to do?
 
Yes, this is what I am wanting to do.

I see that you have had to setup manual addresses as well. Can you not setup the Wireless router as DHCP.

I can only get it to work, when the machines have a fixed IP address.
 
Why do you want DHCP?

The server mac is providing the connection via its USB port. Sharing it is seamless with static IP. I think if you let the router do DHCP and give it a private address (say 192.168.1.1) and set all other Airports to DHCP to get address from the router, it should work - I see no reason why not.

I will try the same in the morning and report back...
 
Not gonna work. The gateway is the Mac with the USB modem (ie, in my scenario, .1.1)

The router at DHCP has no means of knowing which route is the one to the internet because it changes each time.

The slave mac needs an address (ie, .1.1) which it won't get from the router, as the router has no idea.

Perhaps this is confusing. The static ip works....
 
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