Avaya 38DHB0002UKDD Manual Do Utilizador

Introduction 

The Boot Process - Page 7 

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:- 

No

Broadcast Request

for IP Address 

Load Address 

Received and 

Retain Client Mode

Load Default 

Address and Adopt 

Server Mode 

IP Address 

Received? 

Adopt Specified 

Mode and Address 

Adopt DHCP 

Client Mode 

Power Up 

Check for: 

WAN X.21, V.35 

Default 

Configuration? 

Ready 

Yes

Yes

No 

 

 

INDeX IPNC Cassette Administration Manual 

Introduction - Page 7 

38DHB0002UKDD – Issue 7 (22/11/02) 

The Boot Process