My switch has only a port bind to VLAN 6. From there, it attach to PoE system with IP Phones and its system.
For testing, I add one VLAN 6 port and try to see whether there is DHCP service on this VLAN. However, I find that the PC sitting it VLAN6 doesn't get any IP address at all.
How does the IP phone get its IP address ? In case the IP gateway provide the DHCP service, my PC at VLAN 6 should get the IP address. However, it doesn't while the IP handset can.
I have also attached a DHCP request for a testing workstation in VLAN 6 asking for IP address. It seems that no DHCP server in this VLAN can accept the request. Any idea ?