Avaya 38DHB0002UKDD manual The Boot Process, The Start up Process

Introduction The Boot Process - Page 7

The Boot Process

The boot process is shown in the diagram below. When reset the IPNC first checks for any directly connected Leased lines. It then checks its configuration, which is stored in “flash memory”.

When first installed, the IPNC has a default configuration, which includes an IP address and specifies DHCP server operation. After initial configuration and subsequent changes, the flash memory may contain a different mode of operation and a new address.

Note: It is critical that any configuration changes must have been downloaded to the flash memory in order for them to be implemented at start-up. See Configuration Files on page 23.

If the IPNC has a non-default configuration and address value, it simply adopts the defined mode and address.

Alternatively, if the IPNC is in the configuration mode, it first adopts DHCP Client mode and broadcasts a request for an address. If it receives one, it assumes another server is present and adopts Client mode. If it does not receive an address, it adopts the role of a DHCP Server and will provide IP addresses to clients when they are requested as shown in the following diagram:-

The Start up Process

Adopt Specified

Mode and Address

Power Up

Check for:

WAN X.21, V.35

NoDefaultYes Configuration?

Adopt DHCP

Client Mode

Broadcast Request

for IP Address

Yes

Load Address

Received and

Retain Client Mode

IP Address

Received?

No

Load Default

Address and Adopt

Server Mode

Ready

INDeX IPNC Cassette Administration Manual	Introduction - Page 7
38DHB0002UKDD – Issue 7 (22/11/02)	The Boot Process