Alcatel-Lucent 7750 SR OS Basic User Manual

System Initialization
Page 162 7750 SR OS Basic System Configuration Guide
Configuration and Image Loading
When the system executes the boot.ldr file, the initialization parameters from the BOF are
processed. Three locations can be configured for the system to search for the files that contains the
runtime image. The locations can be local or remote. The first location searched is the primary
image location. If not found, the secondary image location is searched, and lastly, the tertiary
image location is searched.
If the
BOF cannot be found or loaded, then the system enters a console message dialog session
prompting the user to enter alternate file locations and file names.
When the runtime image is successfully loaded, control is passed from the bootstrap loader to the
image. The runtime image attempts to locate the configuration file as configured in the BOF. Like
the runtime image, three locations can be configured for the system to search for the configuration
file. The locations can be local or remote. The first location searched is the primary configuration
location. If not found, the secondary configuration location is searched, and lastly, the tertiary
configuration location is searched. The configuration file include chassis, IOM, MDA, and port
configurations, as well as system, routing, and service configurations.
Figure 6 displays the boot sequence.
Figure 6: System Initialization - Part 2
CLI
WAIT
A
B
Y
N
(user in control)
GET FIRST/NEXT
RUNTIME IMAGE
REQUIRED?
Y
CHECK FOR
PRIMARY
SECONDARY
TERTIARY
IMAGE OK?
ALL IMAGES?
STARTUP
FAILED
GET FIRST/NEXT
RUNTIME IMAGE
ALL CONFIGS CONFIG FOUND
NEED
OPERATIONALOPERATIONAL
Y
N
N
N
Y
Y
Boot with defaults
SNMP shutdown
Issue trap
Issue log entry
Issue console msg
OPERATIONAL
SNMP shutdown
Issue trap
Issue log entry
Issue console msg
CONFIG OK?
PROCESS
CONFIG FILE
PERSIST
PROCESSED
OK?
?
PERSISTENCE
?
?
PROCESS
PERSISTENCE &
CONFIGURATION
FILES
CHECK FOR
PRIMARY
SECONDARY
TERTIARY
N
N
N
Y
Y
Y
See Figure 3 on page
See Figure 3
on page 159

Alcatel-Lucent 7750 SR OS Basic Specifications

General

Brand	Alcatel-Lucent
Model	7750 SR OS Basic
Category	Network Router
Language	English