Programming instructions

212
3300 ICP Technician’s Handbook
(Cont’d) DHCP server
cannot assign IP
addresses for the
corresponding
subnet, even
though there are
enough IP
addresses.
1. For a Microsoft DHCP server, reboot the
server.
2. For the controller internal DHCP server,
disable DHCP and rebuild the scope.
L2 switch port is
shut down or not
configured
properly.
1. Check the L2 switch, and ensure that the
port is not shut down.
2. Ensure that this port can access the DHCP
server subnet (that is, access the port for
the same VLAN, etc.).
DHCP Discovery
OR
DHCP OFFER X
REJ
(VLAN) (after
releasing the
first IP from the
native DHCP
server)
DHCP Option 43
or 125 on
Release 7.0 or
later systems or
Option 30
(MITEL IP
PHONE) for
earlier Releases
is not program-
med on the
second scope of
the DHCP server
(or on the
second DHCP
server)
OR
VLAN ID is not
assigned
properly
1. Identify if there is one DHCP server for both
VLANs, or if there is one DHCP server per
VLAN (see “Network Configuration
Examples” on page 317).
2. For one DHCP server for both VLANs,
ensure that option 43 or 125 is properly
configured (Release 7.0 and later) or that
option 130 is programmed as String type
with value of “MITEL IP PHONE “ (prior to
Release 7.0), in the scope of Voice LAN.
3. For one DHCP server per VLAN, ensure
that option 43 or 125 (Release 7.0 and later)
or 130 (prior to Release 7.0) is defined.
4. Verify that the proper VLAN ID is assigned
in option 43 or 125 (Release 7.0 and later),
or 132 (prior to Release 7.0).
One DHCP
server for two
VLANs network
configuration: IP
helper address
on the router
interface is not
set up correctly.
1. On the router interface (on which DHCP is
not residing), enter the IP helper address
and specify the IP address of the DHCP
server on the other side of the subnet (that
is, always set up IP helper address on the
DHCP server client side).
2. Ensure the second scope is created for the
corresponding VLAN (see “Network
Configuration Examples” on page 317 for
more information).
Table 27: IP Phone Registration Troubleshooting (continued)
Error Message
on Display
Probable
Cause
Corrective Action
(Page 2 of 6)