Avaya Business Communications Manager 50 Instalační manuál stáhnout pdf (Strana 66)

66 Chapter 4 Determining DHCP server configuration and IP address

NN40170-305

The DHCP server on the main unit supplies IP configuration information for all IP devices (PCs

and IP Deskphones). The DHCP server also supplies specific connection information to the IP

Deskphones.

If an external DHCP server is present

If an external DHCP is present, then the Avaya BCM50 system uses the IP configuration supplied

by the external DHCP server. In this case, the DHCP server on the main unit supplies only IP

Deskpones with IP configuration information. The DHCP server on the main unit does not supply

any other devices with IP settings. This means that the administrator need not set up the external

DHCP server to supply configuration settings to the IP Deskphones.

The DHCP server on the main unit must configure a range of IP addresses to supply to the

IP Deskphones. The DHCP server uses the top 20 percent of a subnet.

For example, if the external DHCP server supplies the IP address 177.218.21.45 (subnet mask is

255.255.255.0) to the Avaya BCM50, then the BCM50 DHCP server reserves the range

177.218.21.200 to 177.218.21.254.

You can verify and change this default range using Business Element Manager.

The administrator must ensure that this range agrees with the network configuration—the external

DHCP server does not use the range.

BCM50a, BCM50ba, BCM50e, and BCM50be main units

(with integrated router)

You can select the DHCP server option to use with the Avaya BCM50 integrated router main

units. You can select to use the integrated router or you can disable the integrated router and use

the DHCP server that is on the main unit. Select the DHCP server option through Business

Element Manager (Configuration > Data Services > DHCP Server > General Settings tab).

If you select the standard DHCP server on the main unit, you must first disable the DHCP server

on the integrated router. You can then configure the DHCP server functionality in the same way as

a non-router version.

If you select the DHCP server on the integrated router you can configure the router using the router

WebGUI tool.

Warning: The DHCP server on the main unit is enabled (IP Deskphones only) by

default. If your network already contains a DHCP server, then disable the DHCP

server on the main unit. For more information about disabling the DHCP server

on the main unit, see the procedure To configure DHCP server settings on page

139.

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Avaya Business Communications Manager 50 Instalační manuál Strana 66