This setup has been in place for some time; no new PC's or phones, no changes to switch. Using Avaya IP phones, 2960 POE switch (12.2.44SE6 since upgraded)
Voice VLAN 146 ; PC Vlan 140, below is a typical port config:
switchport access vlan 140
switchport mode access
switchport voice vlan 146
switchport port-security maximum 2
switchport port-security violation protect
Port security was never triggered.
Started last week with one phone, a few more yesterday, couldn't contact the DHCP server . Upon review of the mac address table on the switch both devices were assigned to vlan 140. I reset the values on a few phones, re-configured them for VLAN 146 but still did not work.
Removed port security from the ports and the phone jumped onto vlan 146 and now work.
This is a configuration I have in use in many places, any ideas why this would have happened ?
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