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R7000 Different MAC Addresses?

callmesov
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R7000 Different MAC Addresses?

I recently picked up a standalone modem and an R7000 to replace the combination modem/router I have with BrightHouse. When configuring it I noticed the MAC address listed on the sticker on the bottom of the router was different than the one the router was actually defaulting to. I noticed this after struggling for an hour trying to figure out why port forwarding wasn't working.

 

I changed the MAC to match the one on the bottom of the router and power cycled my modem, which fixed the port forwarding issue as far as I can tell.

 

Why the two different MAC addresses, and what are the rammifcations (if any) of changing it from the default one to what is listed on the router label. 

Model: R7000|Nighthawk AC1900 Dual Band WiFi Router
Message 1 of 4

Re: R7000 Different MAC Addresses?

Look on the Advanced tab in the router interface. Then  the Advanced Home button.

 

I see separate Mac addresses for Router Information and Internet Port. Last two characters are different. Only one of these is on the device itself.

 

I leave it to someone else to explain what that means.

Just another user.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 2 of 4
TheEther
Guru

Re: R7000 Different MAC Addresses?

One MAC address is for the Internet/WAN port and the other is shared among the LAN ports, which are part of a switch. It's analogous to the fact that routers have two IP addresses, one on each port.

Changing the MAC address should not have any bearing on port forwarding.
Message 3 of 4
antinode
Guru

Re: R7000 Different MAC Addresses?

> I recently picked up a standalone modem and an R7000 [...]

   Does "picked up" mean bought new or used?  If used, did you do a full
("factory") reset first?

> When configuring it I noticed the MAC address listed on the sticker on
> the bottom of the router was different than the one the router was
> actually defaulting to.

   How "different"?  Which "the one the router was actually defaulting
to"?  The router has more than one interface, and each has its own MAC
address.

> [...] trying to figure out why port forwarding wasn't working.

   It's not immediately obvious to me how any MAC address would affect
port forwarding, but I wouldn't rule it out.


> Last two characters are different.


   I'd expect the last one digit to differ.

Message 4 of 4
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