we have catalyst 4506 and 4507 switches serving both voice and data.
we have noticed that when soft rebooting a nortel 2004 phone it was taking 10 mins to reset.
a trace on the switchport serving the phone showed numerous dhcp discover frames being generated but not being replied to until 10 mins had elapsed.
a trace on the uplink trunks serving the switch showed only a single dhcp dicover frame after 10 mins.
the ports are all configured as
switchport access vlan xxx
switchport mode access
switchport voice vlan xxx
switchport port-security maximum 5
switchport port-security aging time 10
no snmp trap link-status
we removed the port security config and the phone rebooted fully after less than a minute.
we changed the time of the port security aging parameter and this directly affected how quickly the phone rebooted.
so... the port security config is stopping the switch forwarding dhcp discover frames for the period of the port security aging time.
can anyone explain why this is happening
the switches are running native ios 12.2(50)sg
this only occurs with soft reboots not cold reboots