AX1800 v1.20 Router DHCP problem v1.20

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AX1800 v1.20 Router DHCP problem v1.20

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AX1800 v1.20 Router DHCP problem v1.20
AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 12:02:23 - last edited 2023-08-31 12:13:56
Model: Archer AX1800  
Hardware Version: V1
Firmware Version: 1.1.0 Build 20230725 Rel. 56344(4555)

 

The AX1800 works fine except for one problem.

 

I have added devices to the "Address Reservation" table.

 

The devices get IP adresses but not the one I have asigned to the MAC Adresses but a random one.

Is TP-Link "Address Reservation" defect or?

 

How can I overcome this problem?

 

Other qustions why dose "Address Reservation" start with x.x.x.100 and end at x.x.x.249?


Very best regards
Stig

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15 Reply
Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 14:00:24 - last edited 2023-08-31 17:07:12

  @SlySly 

 

Here's a guide for configuring Address Reservation on your router.

If your DHCP server IP address pool is from 192.168.1.100 to 192.168.1.249 (for example), make sure that IP addresses that you set in the Address Reservation table are within the same range.

Also beware that some devices like mobiles and laptops could use a random MAC addresses each time when they are connected to your wireless SSID.

Here's how to mitigate this behaviour.

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 16:57:31

  @terziyski  Thanks,

 

The IP adresses asigned is with in the range x.x.x.100 to x.x.x.249 and there is MAC spofing activ, I have veryfyed MAC adresses on the network with sniffing tool.

 

The device gets IP adress from the range x.x.x.100 to x.x.x.249 but the one I have reserved to the device.

 

Any other surgestions.

 

Vbr Stig

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 16:59:38

  @SlySly  sorry NO MAC spofing

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 17:21:27 - last edited 2023-09-01 20:47:40

  @SlySly 

 

So the IP address that devices received from AX23 are within its DHCP server IP pool, but are not the ones you've set into the Address Reservation table ?

Are these IP addresses (set into the Address Reservation table) within the DHCP server IP pool as well ?

Your router is Archer AX23 HW v1.2 - is that correct ? - you can check that on the device bottom sticker.

Was the Address Reservation working normally before ? Have you done any FW upgrade recently ?

Can you describe your network setup - any ISP provided devices or other network equipment, etc.? It would be easier to troubleshoot if you post a screenshots of your DHCP server settings, Addrres Reservation table and DHCP Client List table. You can cover/blure your MAC addresses first three hexadecimal pairs for privacy.

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 22:23:26

  @SlySly 

So the IP address that devices received from AX1800 are within its DHCP server IP pool, "Sly reply" YES

 

but not the ones you've set into the Address Reservation table ? Is that correct ? "Sly reply" partely correlt, some is OK and some is wrong.

 

Your router is Archer AX23 HW v1.2 - is that correct ? Was the Address Reservation working normally before the FW upgrade ? "Sly reply" Sorry I dont know I made an upgrade to the latest version when installing the router.

 

Can you describe your network setup
"Sly reply" simpel network, with NAT and DHCP 2 NAS drive, 2 Printers, Smart phones, TV (total of 31 node on the network)

 

any ISP provided devices or other network equipment, etc. 

"Sly reply" Fiberheadend from Waoo and It has been running for 3 years with no problems only a new Routre was been added ti the network (old one had problems with stability)

 

Can you post a screenshots of your DHCP server settings, Addrres Reservation table and DHCP Client List table ?

"Sly reply" Yes for sure

 

2 last  dev adr. in the client list is wrong

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 22:26:01

  @SlySly Sorry the 2 first in the client list

 

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-08-31 22:56:27 - last edited 2023-08-31 23:42:49

  @SlySly 

 

How many devices you've addedd to the AX23 Address Reservation table ?

I can see where the problem is with one of your PCs (Sly-dell-2-Pc) - it has two address reservations under the same name.

 

That's from Address Reservation Table:

That's from the DHCP Client List:

Another entry for Sly-dell-2-Pc with an issue.

From Address Reservation table:

From DHCP Client List table:

When Sly-dell-2-Pc address reservation is enabled/active, device should appear in the DHCP Client List table as "Permanent" but not with its Lease time as in the screenshot above.

 

Lets take for example Lenovo-Pc - that's how it should look like to be correct.

That's from Address Reservation Table:

That's from DHCP Client List table:

You can see the difference between those two devices.

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-09-01 05:21:48

  @terziyski 

 

31 devices has been added to the list, and yes Sly-dell-2-PC has 2 interfaces one wifi and one LAN.

 

Vbr Stig

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-09-01 05:35:29 - last edited 2023-09-01 05:40:02

  @SlySly 

 

All the entris in the address reservation including Sly-dell-2-Pc is entered the same way and I dont know why the do not apper as "Permanent"

 

Vbr Stig

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Re:AX1800 v1.20 Router DHCP problem v1.20
2023-09-01 06:29:30

  @SlySly 

 

Hi, except for the router, do you have any other access point or range extender in the same network?

If so, try connecting Sly-dell-2-Pc etc. to the router directly, also try to remove the address reservation for Sly-dell-2-Pc and add it back again to see if it will work.

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