Orbi WiFi 7 RBE973
Reply

Address Reservation not working/ being ignored

pwhite1989
Tutor

Address Reservation not working/ being ignored

Hi all,

 

I am having an issue where I have reserved an IP address (192.168.1.2) for MAC (B8:27:EB:A1:BA:F5),  but whenever that particular device is connected, it just gets assigned an IP address from the pool (i.e. 192.168.1.8). I'm sure I'm doing something wrong - I just can't figure out what!

 

Use Router as DHCP Server is ticked:

The Starting IP Address is 192.168.1.3

The Ending IP Address is 192.168.1.254

 

There is only one device in the Address Reservation Table:

192.168.1.2   =>   B8:27:EB:A1:BA:F5

 

However, the device appears in the Attached Devices table like this:

192.168.1.8   =>   B8:27:EB:A1:BA:F5

This is not what I want - I want it to be assigned the reserved address

 

Side note - I have rebooted and reset both my router (R7000, V1.0.9.64_10.2.64) and the device itself.

 

And help would be greatly appreciated 😄

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

Accepted Solutions
antinode
Guru

Re: Address Reservation not working/ being ignored

> [...] (R7000, V1.0.9.64_10.2.64) [...]

 

   That may not be the most popular firmware version.  Have you tried
any other (older) firmware version(s)?

 

   I have no recent experience with address reservation on an R7000, so
I know nothing, but your description looks good to me.

 

> [...] I have reserved an IP address (192.168.1.2) for MAC
> (B8:27:EB:A1:BA:F5), [...]

 

   A Raspberry Pi?  (Which?)  Wired or wireless interface?  (Each should
have its own MAC address.)  And it's using DHCP, not a static address
(for that interface)?

 

> [...] but whenever that particular device is connected, it just gets
> assigned an IP address from the pool (i.e. 192.168.1.8). [...]

 

   Always the same, or variable, depending on what else is connected?

 

   Is some other device camped on "192.168.1.2"?


> [...] I'm sure I'm doing something wrong - I just can't figure out
> what!

 

   I'd say that it's probable, but I don't see it (yet), either.

View solution in original post

Message 2 of 4

All Replies
antinode
Guru

Re: Address Reservation not working/ being ignored

> [...] (R7000, V1.0.9.64_10.2.64) [...]

 

   That may not be the most popular firmware version.  Have you tried
any other (older) firmware version(s)?

 

   I have no recent experience with address reservation on an R7000, so
I know nothing, but your description looks good to me.

 

> [...] I have reserved an IP address (192.168.1.2) for MAC
> (B8:27:EB:A1:BA:F5), [...]

 

   A Raspberry Pi?  (Which?)  Wired or wireless interface?  (Each should
have its own MAC address.)  And it's using DHCP, not a static address
(for that interface)?

 

> [...] but whenever that particular device is connected, it just gets
> assigned an IP address from the pool (i.e. 192.168.1.8). [...]

 

   Always the same, or variable, depending on what else is connected?

 

   Is some other device camped on "192.168.1.2"?


> [...] I'm sure I'm doing something wrong - I just can't figure out
> what!

 

   I'd say that it's probable, but I don't see it (yet), either.

Message 2 of 4
pwhite1989
Tutor

Re: Address Reservation not working/ being ignored

  > [...] And it's using DHCP, not a static address
  > (for that interface)?

 

This was it! I went to  

cat /etc/network/interfaces

which had nothing in it.  I then went to

 

cat /etc/dhcpcd.conf 

which showed that it was using a static IP.

What would be your suggestion? Change the static IP  to 192.168.1.2 or change it to DHCP?

Thank you for your help!

 

 

Message 3 of 4
antinode
Guru

Re: Address Reservation not working/ being ignored

> [...] What would be your suggestion? Change the static IP to
> 192.168.1.2 or change it to DHCP? [...]

 

   Your choice.  Around here, I have many systems with static addresses,
mostly old stuff where DHCP is not supported (well or at all).  I also
have others with reserved dynamic addresses, mostly newer stuff, and/or
devices like printers or Internet-of-Junk gizmos, which don't have
convenient user interfaces (keyboard+display).  My DHCP pool is pretty
small (16), and its only customer at the moment is a Roku box.

 

   For a portable device, like, say, a laptop computer, DHCP makes much
more sense.  The question is whether you want to do your management on
the individual device(s) or on the router (DHCP server).

Message 4 of 4
Top Contributors
Discussion stats
  • 3 replies
  • 8962 views
  • 0 kudos
  • 2 in conversation
Announcements

Orbi WiFi 7