Avaya BCM50 Guide de configuration télécharger pdf (Page 477)

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Chapter 65 DHCP overview 477

Networking Configuration Guide

• S2 Retry count: 1

With external DHCP server

With the DHCP Status set to Enabled (Automatic), which is the default, the BCM first attempts

to get a dynamic IP address from a DHCP server. The external DHCP server responds with an IP

address, for example 47.166.50.108/255.255.255.192, as well as domain information such as

europe.nortel.com.

If the BCM receives an address assignment from a DHCP server, the BCM DHCP Server services

only Nortel IP Phones requesting DHCP information. It does not service PCs. This is equivalent to

setting the DHCP Status to Enabled (IP Phones Only).

The VoIP settings allow any Nortel IP telephone using DHCP to get the BCM address and connect

to the system:

• S1 IP address:

47.166.50.108

• S1 Port: 7000

• S1 Action: 1

• S1 Retry count: 1

• S2 IP address:

47.166.50.108

• S2 Port: 7000

• S2 Action: 1

• S2 Retry count: 1

BCM is unable to reach external DHCP server

In an instance where a BCM is unable to connect the DHCP server it had previously been using, it

uses configuration information that exists from the previous lease. After the BCM is unable to get

a dynamic IP address from a server, it uses the IP address saved from the previous lease. The VoIP

information remains unchanged, since the IP address for the BCM LAN has not changed. The

BCM still attempts to renew it’s dynamic IP address each time it reboots, so if the external DHCP

server becomes available again, it will get a new dynamic IP address.

BCM using a dynamic address is changed to a static address

If a BCM had been using a dynamic IP address, and is manually changed to use a static

IP address, the VoIP information for the BCM LAN changes as well.

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Avaya BCM50 Guide de configuration Page 477

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