
28 Chapter 1 CLI Basics
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You can use 256 port-, protocol-, and MAC SA-based VLANs for the stack with a
Pure BPS 2000 stack running software version 1.2. (The maximum number of
MAC SA-based VLANs available is 48). If you are working with a mixed, or
hybrid, stack, you can use 64 VLANs for the entire stack. When you change from
a Pure BPS 2000 Stack mode to a Hybrid Stack mode:
• If you have up to 64 VLANs on the Pure BPS 2000 Stack, they will be
retained when you change to a Hybrid Stack.
• If you have more than 64 VLANs on the Pure BPS 2000 Stack, you will lose
them all. The Hybrid Stack will return to the default VLAN configuration.
Also, a mixed, or hybrid, stack does not support multiple Spanning Tree Groups
(STG). You have a single instance of STG when working with a mixed stack.
• If you have up to 64 VLANs on the Pure BPS 2000 Stack, they will be
retained when you change to a Hybrid Stack.
• If you have more than 64 VLANs on the Pure BPS 2000 Stack, you will lose
them all. The Hybrid Stack will return to the default VLAN configuration.
Also, a mixed, or hybrid, stack does not support multiple Spanning Tree Groups
(STG). You have a single instance of STG when working with a mixed stack.
CLI command modes
Most CLI commands are available only under a certain command mode. The BPS
2000 has the following four command modes:
• User EXEC
• Privileged EXEC
• Global Configuration
• Interface Configuration
The User EXEC mode is the default mode; it is also referred to as exec. This
command mode is the initial mode of access upon first powering-up the BPS
2000. In this command mode, the user can access only a subset of the total CLI
commands; however, the commands in this mode are available while the user is in
any of the other four modes. The commands in this mode are those you would
generally need, such as ping and logout.
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