cable modem mac address

cable modem mac address
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Subject Author Date
cable modem mac address cdoc 03-22-2006
Posted by cdoc on March 22, 2006, 10:41 pm
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Hello
I apologize in advance as I am sure this question has been asked a
thousand times but I could not find the exact answer I was looking for
googling.
I helped someone setup a router on a cable modem today and had to clone
the mac address to get it to work.
Cable provider is Comcast. Modem Surfboard SB4100.
Is there a way to force the modem to reset to a new mac address?

NMFall 20%
Posted by Warren on March 22, 2006, 11:27 pm
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cdoc wrote:
> Hello
> I apologize in advance as I am sure this question has been asked a
> thousand times but I could not find the exact answer I was looking for
> googling.
> I helped someone setup a router on a cable modem today and had to clone
> the mac address to get it to work.
> Cable provider is Comcast. Modem Surfboard SB4100.
> Is there a way to force the modem to reset to a new mac address?
>

Your syntax is a bit off. I don't think you're asking to change the cable
modem's MAC address, but rather you're trying to get a new device (the
router) to work behind an cable modem that isn't being changed.

Power-down the cable modem, the router, and the computer. Wait a half a
minute or so, and then power things up in order: Modem first (let it sync),
then router, and finally the computer.

--
Warren H.

==========
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Any resemblance to the views of anybody living or dead is
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response -- unless you count my dog who desperately wants
to go outside now.

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Posted by DLR on March 23, 2006, 12:50 pm
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Warren wrote:
> cdoc wrote:
>> Hello
>> I apologize in advance as I am sure this question has been asked a
>> thousand times but I could not find the exact answer I was looking for
>> googling.
>> I helped someone setup a router on a cable modem today and had to clone
>> the mac address to get it to work.
>> Cable provider is Comcast. Modem Surfboard SB4100.
>> Is there a way to force the modem to reset to a new mac address?
>>
>
> Your syntax is a bit off. I don't think you're asking to change the cable
> modem's MAC address, but rather you're trying to get a new device (the
> router) to work behind an cable modem that isn't being changed.
>
> Power-down the cable modem, the router, and the computer. Wait a half a
> minute or so, and then power things up in order: Modem first (let it sync),
> then router, and finally the computer.
>
I'd go for 10 minutes.

Posted by Eric on April 2, 2006, 10:10 am
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Warren Wrote: > Power-down the cable modem, the router, and the
computer. Wait a half a
> minute or so, and then power things up in order: Modem first (let it sync),
> then router, and finally the computer.

Then, DLR wrote: "I'd go for 10 minutes"

Nope. 3-5 seconds is just fine when reseting a modem. If you're having
to wait 10 minutes for a simple power cycle to be sucessful, something
else is going on.


Posted by DLR on April 11, 2006, 2:26 am
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Eric wrote:
> Warren Wrote: > Power-down the cable modem, the router, and the
> computer. Wait a half a
>> minute or so, and then power things up in order: Modem first (let it sync),
>> then router, and finally the computer.
>
> Then, DLR wrote: "I'd go for 10 minutes"
>
> Nope. 3-5 seconds is just fine when reseting a modem. If you're having
> to wait 10 minutes for a simple power cycle to be sucessful, something
> else is going on.
>
Around here TWC learns the Mac address at the other end and you have to
be off long enough for the head end to notice and forget the Mac. Don't
know what the polling time is but 10 minutes always works. 10 seconds
rarely does.

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