Installation manual

IP DECT Installation Page 100
15-601085 Issue 04f (11 June 2009)IP Office
VLAN and the Boot Phase of an IP Base Station
DHCP
Because the IP Base Station is not VLAN active during the beginning the start up two DHCP scopes are required (This
procedure applies regardless of the Ethernet switch being used):
The following scenario with arbitrary VLAN IDs details the steps an IP Base Station would go through in a typical dual-
VLAN implementation.
Step A. DHCP scope within the native VLAN:
1.IP Base Station boots up and obtains an address on the native VLAN.
2.The data VLAN DHCP Public option 225 directs the IP Base Station to go to voice VLAN.
Step B. DHCP scope within the voice VLAN:
1.IP DECT Base Station releases the data VLAN address and obtains an address on the voice VLAN and all other
parameters.
2.The voice VLAN does not have the DHCP Public option 225, because an IP Base Station already on the voice VLAN
does not need to be directed to go there.
3. IP Base Station is operational on the voice VLAN.
If a reboot or power cycle occurs, the IP DECT Base Station returns to step A.
If an IP Base Station cannot obtain an address on the voice VLAN, due to network or DHCP problems, it falls back
automatically to untagged frames (native VLAN).
· Note: The IP Office DHCP server cannot be used for VLAN environments, only for native VLAN. Therefore, it can
only be used for step A, not step B.
Local Configuration of the IP DECT Base Stations
The ADMM Configurator has to be a member of the native VLAN for the first configuration.