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Change MAC address on CM1200

pprindeville
Aspirant

Change MAC address on CM1200

Not sure this is the right channel, since my CM1200 isn't a router or a WiFi device, but not finding a better location...

 

Anyway, is there a way to duplicate the MAC address of the modem that my MSP gave me?  It's a tier 3 manufacturer and I have concerns about it...  Plus it's a router/firewall/WAP/modem and all I really want is a modem.  My employer provides its own firewall for home workers to use.

 

Thanks

 

Message 1 of 6
FURRYe38
Guru

Re: Change MAC address on CM1200

The CM modem is only a modem. The MAC address can not be changed. If the MAC address was changed then it would loose connect to the ISP since the ISP associates the modems MAC address with there services to be able to operate with the ISP.

 

A external router or firewall device can be connected to the CM modem.

My Setup ISP SparkLight | Internet Cable 1000↓/50↑ CAX80 Modem Mode |  Wifi Router MK83+ (Router Mode) | and RBK853 (Router Mode) | Switches NG GS105/8, GS308v3, GS110MX and XS505M | Additional NG HW: C7800/CAX80/CM1100/CM1200/CM2000, Orbi: CBK40, CBK752, RBK50, RBK853, RBK752, RBK953, SXK30 | NightHawk: MK63, MR6150, R7000, R7800, R7960P, R8000, R8500, R9000, RAXE500, RAX50, XR450, XR1000, EX7500/EX7700

Message 2 of 6
pprindeville
Aspirant

Re: Change MAC address on CM1200


@FURRYe38 wrote:

The CM modem is only a modem. The MAC address can not be changed. 

I've had other modems which did allow you to change the MAC address.

 

Message 3 of 6
FURRYe38
Guru

Re: Change MAC address on CM1200

Thats great. 

My Setup ISP SparkLight | Internet Cable 1000↓/50↑ CAX80 Modem Mode |  Wifi Router MK83+ (Router Mode) | and RBK853 (Router Mode) | Switches NG GS105/8, GS308v3, GS110MX and XS505M | Additional NG HW: C7800/CAX80/CM1100/CM1200/CM2000, Orbi: CBK40, CBK752, RBK50, RBK853, RBK752, RBK953, SXK30 | NightHawk: MK63, MR6150, R7000, R7800, R7960P, R8000, R8500, R9000, RAXE500, RAX50, XR450, XR1000, EX7500/EX7700

Message 4 of 6
pprindeville
Aspirant

Re: Change MAC address on CM1200

Don’t CM’s also have DOCSIS X.509 certificates that uniquely identify them more so than a MAC address?

https://www.cablelabs.com/resources/docsis-pki
Message 5 of 6
FURRYe38
Guru

Re: Change MAC address on CM1200

I presume so yes. All modems still have MAC addresses though. Something most ISPs use to associate with there network. 

My Setup ISP SparkLight | Internet Cable 1000↓/50↑ CAX80 Modem Mode |  Wifi Router MK83+ (Router Mode) | and RBK853 (Router Mode) | Switches NG GS105/8, GS308v3, GS110MX and XS505M | Additional NG HW: C7800/CAX80/CM1100/CM1200/CM2000, Orbi: CBK40, CBK752, RBK50, RBK853, RBK752, RBK953, SXK30 | NightHawk: MK63, MR6150, R7000, R7800, R7960P, R8000, R8500, R9000, RAXE500, RAX50, XR450, XR1000, EX7500/EX7700

Message 6 of 6
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