DHCP offering endlessly on Mikrotik and connected APs through Zyxel NSW200-28P switch
Freshman Member
When I connect my mikrotik APs through the Zyxel NSW200-28P with my Mikrotik router I cannot get DHCP bind with those devices even those connected through wireless network. All other connections via DHCP works on that switch, only the APs and wireless clients.
On other switch (TP-Link) it works flawlessly but I need PoE injector with separate power supply. That is the reason I want to use Zyxel switch
I have all management features disabled (STP, RSTP, LLDP, Storm Control etc.) only VLANs are enabled but they are working perfectly. In the event logs I see broadcast and multicast storm on the port that the router is connected into.
All Replies
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Hi @Matylda,
May I know the VLAN setting on the AP connection ports and the router port? And which management VLAN and SSID VLAN are your AP using?
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The AP needs tagged packets for 200, 300 and 400 VLAN. It is already working on the TP-Link switch, but not on Zyxel.
I have the port on Zyxel for AP set as it is in the attached screenshot below. Management VLAN is also 200. Uplink port is the same but is has also 500 set in the allowed VLANs which is used in other ports.
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Hi @Matylda,
May I know if the issue only occurred on the ports where PVID has been set to 200 and 500? If yes, please change the PVID to 1 since the switch will untag the VLAN ID of the packets when it matches your PVID.
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500 ports work, because they are left untagged. I changed the PVID of the ports that I want them to be tagged with 200 to 1 and it works now, but why does it untag when the PVID is set to the same VLAN? No other switch in my network does that.
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Hi @Matylda
PVID = Cisco switchport trunk native vlan. For more details, you may reference the below FAQ:
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