
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.
Comentários a estes Manuais