Admin Guide

Table Of Contents
Chapter 4: System startup fundamentals
This section provides conceptual material on the boot sequence and boot processes of the switch.
Review this content before you make changes to the configurable boot process options.
spbm-config-mode boot flag
Shortest Path Bridging (SPB) and Protocol Independent Multicast (PIM) cannot interoperate with
each other on the switch at the same time. To ensure that SPB and PIM stay mutually exclusive, a
boot flag called spbm-config-mode is implemented.
The spbm-config-mode boot flag is enabled by default. This enables you to configure SPB
and IS-IS, but you cannot configure PIM either globally or on an interface.
If you disable the boot flag, save the config and reboot with the saved config. When the flag is
disabled, you can configure PIM and IGMP Snooping, but you cannot configure SPB or IS-IS.
Important:
Whenever you change the spbm-config-mode boot flag, you should save the configuration
and reboot the switch for the change to take effect.
For more information about this boot flag and Simplified vIST, see Configuring IP Multicast Routing
Protocols on Avaya Virtual Services Platform 7200 Series and 8000 Series, NN47227-504.
Boot sequence
The switch goes through a three-stage boot sequence before it becomes fully operational. After you
turn on power to the switch, the system starts.
The boot sequence consists of the following stages:
Stage 1: Loading Linux on page 34
Stage 2: Loading the primary release on page 35
Stage 3: Loading the configuration file on page 35
The following figure shows a summary of the boot sequence.
January 2017 Administering Avaya VSP 7200 Series and 8000 Series 33
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