DHCP Clients not getting leases with Cisco VLAN
Posted on 2014-03-31
I am absolutely stumped on this one. I have a 3650 core switch with a whole heap of 2960s switches either directly connected or daisy chained one deep from the core.
We are transitioning there network into VLAN's and we created a VLAN for there phones to move into by Creating VLAN 3. VTP Status is showing the results across all switches make a change on core clients get the updates.
However we have a Microsoft Hype-V server with a NIC dedicated to VLAN 3 running DHCP to offer the phones a ip address. Problem is that some of the phones get a lease on VLAN 3 and these are usually on the directly connected switches, but the Phones on the outer switches do not.
I ran test on the default VLAN to see if a computer would pick up a lease on the out edge switches and it does, but if you plug the phone in it does not. Bring the phone to the core or directly connected switches and it picks up a lease straight away.
Can anyone assist I have racked my brains trying to solve this one.