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Pulling new IP without rebooting modem

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Pulling new IP without rebooting modem
redoct2k3 Offline
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#1
06-05-2012, 04:36 AM
I have an ARRIS TM502G.

I don't have access to the config file so I do not know what the MaxCPEAllowed is.

But when I change my router's mac, about 30 seconds later a new external IP is pulled automatically. Without rebooting the modem.

My entire goal is to change IP's without rebooting the modem, but perhaps there is a maximum of mac changes I can make before I need to reboot the modem? I've done it 5-6 times just testing.

Also, I am wondering why it takes 30 seconds to get a new IP. If at all possible, I would like to cut that down as much as I can.

Any help would be VERY appreciated.

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ABMJR Away
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#2
06-05-2012, 04:38 AM
you have no control over how long the DHCP serves a new IP..

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redoct2k3 Offline
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#3
06-05-2012, 04:40 AM
(06-05-2012, 04:38 AM)ABMJR Wrote: you have no control over how long the DHCP serves a new IP..

Yes, but what I am thinking is the router is taking its time telling the modem to update it's learned MAC table with the new mac.

Again, the modem IS not being rebooted. Nor does a single light change when doing this.
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ABMJR Away
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#4
06-05-2012, 05:18 AM
The modem is only a bridge and the DHCP server is on the UBR ..
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redoct2k3 Offline
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#5
06-05-2012, 05:30 AM
Yes but i have two modems on my account with my ISP.

One requires a reboot of the modem to get new IP.

This ARRIS TM502G is able to get one without rebooting.

How is that?
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ABMJR Away
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#6
06-05-2012, 06:01 AM
when you change the 1st device after the modem, the DHCP releases your IP as the 1st device after the CM determines an IP will be given from the DHCP.
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southernyankey1970 Away
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#7
06-05-2012, 10:13 AM
That wasn't too hard was it? Just ask intelligent questions and get intelligent answers....FOR FREE!
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redoct2k3 Offline
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#8
06-05-2012, 04:03 PM
If thats the case then why does one modem do it and the other not? I thought that MAC addresses were 'married' to the modem until a reboot?
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southernyankey1970 Away
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#9
06-05-2012, 04:19 PM
Yes, you cannot change the modem mac w/o reboooting. you can change the router mac but you ned to change the computer name/description AND the nic mac if you don't run a router (which requires that you reboot the pc)
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redoct2k3 Offline
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#10
06-05-2012, 04:45 PM
(06-05-2012, 04:19 PM)southernyankey1970 Wrote: Yes, you cannot change the modem mac w/o reboooting. you can change the router mac but you ned to change the computer name/description AND the nic mac if you don't run a router (which requires that you reboot the pc)

....My modem gets a new IP without a reboot when I change the mac on the router.
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