I like to know what happened when an IP phone is connected the network.
How does it get the IP address?
What recognizes the IP phone MAC address?
It does this based on the voice vlan configured on the switchport. The phone will broadcast for an address in the subnet configured on the voice vlan interface.
The phone gets its IP address from a DHCP server based on its VLAN membership. The phone registers with Callmanager based on its MAC address. For a more detailed explanation of the phone boot process, see the following link.
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