DHCP-based Provisioning

You can use a third-party DHCP server to automatically provide each device (acting as a DHCP client) with an IP address for the management interface so that individual MAC addresses are not required. The DHCP server can provide additional networking parameters such as subnet mask, default gateway, primary and secondary DNS servers, and two SIP server addresses. These network parameters have a time limit, after which the device 'renews' its lease on the addresses from the DHCP server.

The device can use a host name in the DHCP request. The host name is set to "acl_nnnnn", where nnnnn denotes the device's serial number. The serial number is the last six digits of the device's MAC address converted into decimal representation. In networks that support this feature and if the DHCP server registers this host name to a DNS server, you can access the device (through a Web browser) using the URL "http://acl_<serial number>" instead of the device's IP address. For example, if the device's MAC address is 00908f010280, the DNS name is "acl_66176".

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To enable the device as a DHCP client:

1.

Open the Network Settings page (Setup menu > IP Network tab > Advanced folder > Network Settings).

2.

From the 'Enable DHCP" drop-down list, select Enable.

3.

Click Apply.

4.

To activate the DHCP process, restart the device.

The following shows an example of a configuration file for a Linux DHCP server (dhcpd.conf). The devices are allocated temporary IP addresses in the range 10.31.4.53 to 10.31.4.75. TFTP is assumed to be on the same computer as the DHCP server (alternatively, the "next-server" directive may be used).

ddns-update-style ad-hoc;
default-lease-time 60;
max-lease-time 60;

class "gateways" {
	match if(substring(hardware, 1, 3) = 00:90:8f);
}
subnet 10.31.0.0 netmask 255.255.0.0 {
	pool {
		allow members of "AudioCodes";
        	range 10.31.4.53 10.31.4.75;
		filename "SIP_F6.60A.217.003.cmp –fb;device.ini";
        	option routers                  10.31.0.1;
        	option subnet-mask              255.255.0.0;
	}
}