Enabling DHCP reservations on M4250

[Retired_Member]

Hi all,

I am trying to add a couple of MAC address to a DHCP reservations list through the management Web UI of my M4250. I have already set up a DHCP pool and had the server assign IP's, now I want to move a couple of my NDI devices to maunally assigned an address within the DHCP server.

What I am doing is;

1. Afrer setting up the DHCP pool
2. I go into "DHCP Pool Config"
3. Have my pool selected under "Pool Name"
4. Change the "Type of Binding" field to "Manual"
5. Enter all the required information, including the "Hardware Address" and "Client ID" (the MAC address with 01 at the front)
6. Then hit "Apply"
7. And then I get this error
   1. "Error! Fialed to Set 'Hardware Address' with xx:xx:xx Error! Failed to Set 'Client ID' with XX:xx:xx:xx Error: Could not set host because neither hardware address not client-identifer is configured. Please configure hardware address or client-identifier for host first"

Do I need to set the MAC address that I want to use somewhere else first, if so where? I can't find any information on this. I have definatlly set the hardware and client id fields because it reads them back to me in the error.

Hopefully someone here has an answer because I don't see why this should be this hard. Thanks in advance.

Dave K

[Retired_Member · Accepted solution]

Hi, and thanks for your reply.

I have worked this out, with the help of one of your Pro AV team, and I was making a couple of mistakes. First, as you mentioned, I was adding these under the pool I was using for my main DHCP server, and not making a separate pool for each manual reservation I needed. Second, I hadn't cleared the dynamic reservations before I tried to make the manual ones.

I did end up doing all of this by using the CLI in the end using the following syntax.

service dhcp
ip dhcp pool "VLAN 200"
default-router 192.168.200.1
network 192.168.200.0 255.255.255.0
netbios-node-type b-node
exit

ip dhcp pool "Laptop"
default-router 192.168.200.1
hardware-address f8:75:a4:39:ad:de
host 192.168.200.10 255.255.255.0
netbios-node-type b-node
exit

ip dhcp pool "Printer"
default-router 192.168.200.1
hardware-address f8:75:a4:39:ad:de
host 192.168.200.11 255.255.255.0
netbios-node-type b-node
exit

I will close this post.

Cheers,

Dave K

[JohnC_V]

Hi HomerJayK,

Welcome to our community! 🙂

It seems that you are having problems adding a DHCP reservation on your switch. The MAC address that you want to use should be configured on the DHCP pool configuration after you created the pool. May I know the firmware version? If the switch is not running on the latest version, please do update the firmware first and re-do the configuration.

I hope this article might help too.

Regards,

John

NETGEAR Community Team

[Retired_Member · Accepted solution]

Hi, and thanks for your reply.

I have worked this out, with the help of one of your Pro AV team, and I was making a couple of mistakes. First, as you mentioned, I was adding these under the pool I was using for my main DHCP server, and not making a separate pool for each manual reservation I needed. Second, I hadn't cleared the dynamic reservations before I tried to make the manual ones.

I did end up doing all of this by using the CLI in the end using the following syntax.

service dhcp
ip dhcp pool "VLAN 200"
default-router 192.168.200.1
network 192.168.200.0 255.255.255.0
netbios-node-type b-node
exit

ip dhcp pool "Laptop"
default-router 192.168.200.1
hardware-address f8:75:a4:39:ad:de
host 192.168.200.10 255.255.255.0
netbios-node-type b-node
exit

ip dhcp pool "Printer"
default-router 192.168.200.1
hardware-address f8:75:a4:39:ad:de
host 192.168.200.11 255.255.255.0
netbios-node-type b-node
exit

I will close this post.

Cheers,

Dave K