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ProSAFE XS728T, DHCP on trunk port?
Is it possible to do DHCP on trunk ports?
On my Netgear switch, I have VLANs 128 and 192. I've made port 23 and 24 trunk ports. I'm connecting an access poing to the trunk ports because the SSIDs I'm using needs VLANs. Everything is working except the access point is not getting a dhcp address. It's still on the factory IP.
How does the trunk port know which dhcp to give (128 and 192)
tantony wrote:
The AP is connected to trunk port 24, and I tagged it with VLANS 128 and 192 because the AP SSIDs are using those VLANS. The port PVID is 1. So if I change the port PVID to 128, the AP will get DHCP from that VLAN?
Yes, untagged traffic will be associated to the VLAN 128 then.
tantony wrote:
I'm assuming the SSIDs will still work?
Of corse, yes. Not sure why you intend to expose the management VLAN to the wireless, up to you...
tantony wrote:
The AP is connected to trunk port 24, and I tagged it with VLANS 128 and 192 because the AP SSIDs are using those VLANS. The port PVID is 1. So if I change the port PVID to 128, the AP will get DHCP from that VLAN? I'm assuming the SSIDs will still work?
I guess it makes sense why the AP is not getting a dhcp now because the PVID is 1 no ports are members of VLAN 1.
Yep - no DHCP server on the VLAN, too.
20 Replies
The trunk port does not have to know...
Either the undefined WLAN AP does the BOOTP/DHCP untagged (so the switch PVID does define the VLAN these packets are associated to), or the WLAN AP has a tagged management VLAN configured.
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