Mailinglist Archive: opensuse (4633 mails)

["Greg Wallace" <gregwallace@xxxxxxxxxxx>]

On Tuesday, January 23, 2007 @ 11:26 PM, Jim Cunning wrote:

>On Tuesday 23 January 2007 18:07, Greg Wallace wrote:
>[...]
>> >Ok.  I found it.  I picked "Use This Mac Address" which already had an
>> >address in it but was grayed out until I selected it.  Is that the Mac
>> >Address of the modem, or of the router?
>I don't know. You might be able to tell by comparing that value with the
MAC 
>address displayed by 'ifconfig eth0' on your workstation (assuming you use 
>eth0 to connect to your LAN and router. Choosing the "Default MAC Address" 
>would definitely have used the router's MAC address on the WAN interface.

I think this means use the router's mac address.


>> >Thanks,
>> >Greg Wallace
>>
>> I've been doing some googling on this and I'm still a bit confused.  When
>> you choose, for example, "Use This Mac Address", if that's not the mac
>> address that the modem picked earlier (from, say, a different router)
will
>> it be accepted, or wouldn't you still have to re-boot the modem to get it
>> to use that new address?
>Probably the latter.  Unless you have all routers that you might from time
to 
>time connect to your cable modem using the same MAC address on the WAN 
>interface, you'll have to reset the modem on each change.

Right.

>> Or am I still not understanding this process? 
>You're getting there.  In your case, this is probably just a learning
exercise 

Yes.  I learned a lot from this.

>but not really necessary, since you were able to connect to your ISP after 
>resetting the modem.  This feature of most routers is essential, however, 
>when an ISP requires that packets arriving at the cable modem be from some 
>known (to them) MAC address, often one registered with them when signing up

>for their service. This way it looks like the original computer NIC is
still 
>connected directly to the modem, even though there's a router between the 
two.

So that would be when you'd choose Use This Mac Address and key in the one
provided by the ISP, right?



>Jim Cunning

Greg Wallace


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