Programming instructions

Installation

If a different router is need for any IP Consoles, repeat step 6 for

Option 3 and set the Value to the IP address of the router.

7. In the DHCP Lease Viewer form, ensure that there is no DHCP IP

Address Lease for the IP Console MAC Addresses. If there is, delete

it and then power off and power on the device.

8. In the DHCP Server form, enable the internal DHCP server.

To use an alternative DHCP server (see page 307 and page 308):

1. In the DHCP Server form, disable the internal DHCP server.

2. Program your DHCP server with options 128-133.

3. Upgrade the IP Phones/ firmware to 2.0.0.18 or later.

4. Program your DHCP server with the following options:

- 43 Vendor Specific Information, string value

- 125 Vendor-Identifying Vendor-Specific Information, string value.

5. Delete options 128-133.

Program DHCP for VLAN (prior to Release 7.0):

Follow this procedure if using two DHCP servers: central server (external)

on a default VLAN and other (3300 DHCP Server) on the voice VLAN.

Note: IP sets require a firmware upgrade to support the new DHCP

options introduced in Release 7.0; otherwise, the sets will fail to boot. Such

failures can occur, for example, in a resilient cluster of mixed software

releases or when sets with old firmware are added to a controller after it

was upgraded to Release 7.0. For the sets to boot, DHCP options 128-133

must be present in the DHCP server. After the sets have booted, options

128-133 may be removed to avoid future conflicts with standard use or

other vendors’ use of these options

Note: Ensure that all LLDP-compliant telephones are upgraded to

firmware version 2.0.0.18 or later before you use LLDP on your network

for VLAN Discovery.

Note: LLDP-MED non-compliant telephones cannot use LLDP for VLAN

discovery. They must use DHCP VLAN discovery. Non-compliant sets are:

5001, 5005, 5010, 5020 IP Phones, 5140 IP Appliance, 5201, 5205, 5207,

5215 (single mode), 5220 (single mode), 5230 IP Phones, 5240 IP

Appliance, 5485 IP Pager, and 5550 IP Console keypad.