Mitel MiVoice Business Troubleshooting Manual page 68

C 3
HAPTER
IP Phone Registration Troubleshooting (Continued) (Sheet 3 of 8)
Table 3.8:
Error Message on
Display
DHCP Discovery
OR
DHCP OFFER X
REJ
(VLAN) (after
releasing the first IP
from the native
DHCP server)
Possible Cause
DHCP Option 43 or
125 on 3300
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.
One DHCP server
for two VLANs
network
configuration: IP
helper address on
the router interface
is not set up
correctly.
Corrective Action
Identify if there is one DHCP server for both
1.
VLANs, or if there is one DHCP server per
VLAN (see "Network Configuration Examples"
in the "Typical Network Configurations" chapter
of the Technician's Handbook).
For one DHCP server for both VLANs, ensure
2.
that option 43 or 125 is properly configured
(3300 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.
For one DHCP server per VLAN, ensure that
3.
option 43 or 125 (Release 7.0 and later) or 130
(prior to Release 7.0) is defined.
Verify that the proper VLAN ID is assigned in
4.
option 43 or 125 (Release 7.0 and later), or 132
(prior to Release 7.0).
On the router interface (on which DHCP is not
1.
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).
Ensure the second scope is created for the
2.
corresponding VLAN (see "Network Configura-
tion Examples" in the "Typical Network Config-
urations" chapter of the Technician's Handbook
).
P
HONES
H
ARDWARE
61