CPE210 Doesn't show up in DHCP Client List

CPE210 Doesn't show up in DHCP Client List

CPE210 Doesn't show up in DHCP Client List
CPE210 Doesn't show up in DHCP Client List
3 weeks ago - last edited 2 weeks ago
Model: CPE210  
Hardware Version:
Firmware Version:

 

I have a CPE210 in Client mode sending the signal back from a single IP Camera to my office router.   The CPE and camera are connected through a switch.

 

Problem is, the CPE210 doesn't register correctly in my router's DHCP list.    I've googled and searched this website without success.  Found others with somewhat similar issues, and read the suggestions, but they don't work.  

 

So here's some info:
The CPE 210 is in client mode.  The CPE's IP address is set to static at 192.168.1.50.   My router is at 192.168.1.1.  

The IP camera is also set to a static IP address at 192.168.1.16
Everything on 255.255.255.0 subnet mask.

 

When I look at the network DHCP listings in my router, it shows the Camera IP at 192.168.1.16, but that IP address is listed with the CPE210's mac address.    So in the DHCP listing, the camera's IP address is listed with the CPE210's mac address..     HUH?   I've never seen that before.

There is no separate listing for either the CPE antenna or the camera.   It's like they've been combined into one hybrid listing.

 

I can easily access the CPE210 now from my office computer by simply typing in the IP address of the CPE Antenna (192.168.1.50), but that IP address does not show up anywhere in my router's DHCP list.    I can't find a single reference to that IP address anywhere, but if I type it into my address bar, the browser goes right to it.

 

When I go into the CPE210's user interface and look under the STATUS tab, at the bottom is an ARP Table, and the CPE sees the other stuff on my network..   But my network doesn't see the CPE even though I can easily access the configuration page. 

 

What's going on and how do I fix this?

 

 

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1 Accepted Solution
Re:CPE210 Doesn't show up in DHCP Client List-Solution
2 weeks ago - last edited 2 weeks ago

Hi  @Murby 

 

Thanks for posting here.

Here are some recommendations:

1. Check CPE210’s Bridging Mode

  • In Client mode, the CPE210 should act as a transparent bridge (default behavior), but your observations suggest it might be performing MAC address translation (NAT or routing mode).
  • Solution:
    • Go to CPE210 settings → Confirm Network Mode is set to Client (not Router mode).
    • Check LAN/DHCP settings: Ensure DHCP Client is disabled (since you’re using a static IP).

2. Verify Switch Connection

  • If the switch has issues (e.g., loop or VLAN misconfiguration), it could cause incorrect MAC address learning.
  • Test Method:
    • Temporarily remove the switch and connect the camera directly to the CPE210’s LAN port, then check if the router’s DHCP list updates correctly.

3. Clear ARP Cache

  • The router or local devices may have outdated ARP entries.
  • Steps:
    • On your computer, run:
      arp -d 192.168.1.16  # Remove incorrect ARP entry  
      arp -d 192.168.1.50  
      
    • Restart the router to refresh DHCP and ARP tables.

4. Check for IP Conflicts

  • Ensure the camera (192.168.1.16) and CPE210 (192.168.1.50) are not conflicting with other devices.
  • Troubleshooting:
    • Scan all active devices in the router’s interface or use ping to test IP availability.

5. Update Firmware or Reset CPE210

  •  
    • Upgrade CPE210 to the latest firmware → TP-Link Official Site.
    • If the issue persists, perform a factory reset and reconfigure.


After these steps, the router should correctly display both devices (CPE210 and camera) separately, with accurate ARP entries. If the problem continues, please contact TP-Link support for further assistance.

 

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#2
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Re:CPE210 Doesn't show up in DHCP Client List-Solution
2 weeks ago - last edited 2 weeks ago

Hi  @Murby 

 

Thanks for posting here.

Here are some recommendations:

1. Check CPE210’s Bridging Mode

  • In Client mode, the CPE210 should act as a transparent bridge (default behavior), but your observations suggest it might be performing MAC address translation (NAT or routing mode).
  • Solution:
    • Go to CPE210 settings → Confirm Network Mode is set to Client (not Router mode).
    • Check LAN/DHCP settings: Ensure DHCP Client is disabled (since you’re using a static IP).

2. Verify Switch Connection

  • If the switch has issues (e.g., loop or VLAN misconfiguration), it could cause incorrect MAC address learning.
  • Test Method:
    • Temporarily remove the switch and connect the camera directly to the CPE210’s LAN port, then check if the router’s DHCP list updates correctly.

3. Clear ARP Cache

  • The router or local devices may have outdated ARP entries.
  • Steps:
    • On your computer, run:
      arp -d 192.168.1.16  # Remove incorrect ARP entry  
      arp -d 192.168.1.50  
      
    • Restart the router to refresh DHCP and ARP tables.

4. Check for IP Conflicts

  • Ensure the camera (192.168.1.16) and CPE210 (192.168.1.50) are not conflicting with other devices.
  • Troubleshooting:
    • Scan all active devices in the router’s interface or use ping to test IP availability.

5. Update Firmware or Reset CPE210

  •  
    • Upgrade CPE210 to the latest firmware → TP-Link Official Site.
    • If the issue persists, perform a factory reset and reconfigure.


After these steps, the router should correctly display both devices (CPE210 and camera) separately, with accurate ARP entries. If the problem continues, please contact TP-Link support for further assistance.

 

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#2
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