ntermittent WiFi clients unable to obtain IP / no Layer 2 connectivity – NWA130BE (Nebula)

Hi @Zyxel_Melen

We have now completed simultaneous packet captures on both the DHCP server and affected wireless clients.

Findings:

• DHCP Discover and Request packets are successfully transmitted from the wireless client.
• The DHCP server receives these packets and responds appropriately.
• However, the wireless client does not receive DHCP Offer/ACK responses.
• Additionally, affected clients using statically assigned IP addresses are still unable to communicate with the default gateway.
• Packet captures also show repeated ARP requests from wireless clients with no ARP replies received.

Wired clients on the same network/VLAN function correctly.

This indicates the issue is not DHCP pool exhaustion, as static IP communication also fails. The evidence instead points toward a Layer 2 forwarding/bridging issue affecting wireless clients between the AP infrastructure and the wired network.

My first post will also explain additional troubleshooting completed.

Kind regards

Sean