Configuring Advanced Features

HP ProCurve Stack Management

■There is no limit on the number of stacks in the same IP subnet (broadcast domain), however a switch can belong to only one stack.

■If multiple VLANs are configured, stacking uses only the primary VLAN on any switch. In the factory-default configuration, the DEFAULT_VLAN is the primary VLAN. (See “Stacking Operation with Multiple VLANs Configured” on page 9-47and “Which VLAN Is Primary?” on page 9-53.)

■Stacking allows intermediate devices that do not support stacking. This enables you to include switches that are distant from the Commander.

Commander Switch

 

Switch with Stacking

 

 

Candidate Switch

 

 

 

Disabled or Not Available

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Member Switch

 

 

 

 

 

Figure 9-3. Example of a Non-Stacking Device Used in a Stacking Environment

Specific Rules

Table 9-2outlines the specific rules for switches operating in a stack.

Table 9-2. Specific Rules for Commander, Candidate, and Member Switches

IP Addressing and

Number Allowed

Passwords

SNMP Communities

Stack Name

Per Stack

 

 

 

 

 

 

Commander IP Addr: Requires an

Only one

The Commander’s Manager

Standard SNMP community

assigned IP address

Commander

and Operator passwords are

operation. The Commander

and mask for access

switch is allowed

assigned to any switch

also operates as an SNMP

via the network.

per stack.

becoming a Member of the

proxy to Members for all

Stack Name: Required

 

stack.

SNMP communities config-

 

 

If you change the

ured in the Commander.

 

 

Commander’s passwords, the

 

 

 

Commander propagates the

 

 

 

new passwords to all stack

 

 

 

Members.

 

Features

Advanced Configuring

 

 

9-9