ProCurve Stack Management 
Operation 
■  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 8-45 and “The Primary VLAN” 
on page 2-7.) 
■  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 
Disabled or Not Available 
Member Switch 
Candidate Switch 
Figure 8-3.  Example of a Non-Stacking Device Used in a Stacking Environment 
Specific Rules 
Table 8-2. Specific Rules for Commander, Candidate, and Member Switch 
IP Addressing and 
Stack Name 
Number Allowed 
Per Stack 
Passwords  SNMP Communities 
Commander   IP Addr: Requires an 
assigned IP address 
and mask for access 
via the network. 
Stack Name: Required 
Only one 
Commander 
switch is allowed 
per stack. 
The Commander’s Manager 
and Operator passwords are 
assigned to any switch 
becoming a Member of the 
stack. 
If you change the 
Commander’s passwords, the 
Commander propagates the 
new passwords to all stack 
Members. 
Standard SNMP community 
operation. The Commander 
also operates as an SNMP 
proxy to Members for all 
SNMP communities config-
ured in the Commander. 
Candidate  IP Addr: Optional.  n/a  Passwords optional. If the  Uses standard SNMP 
Configuring an IP  Candidate becomes a stack  community operation if the 
address allows access  Member, it assumes the  Candidate has its own IP 
via Telnet or web  Commander’s Manager and  addressing. 
browser interface  Operator passwords. 
while the switch is not 
a stack member. In the 
factory default configu-
ration the switch auto-
matically acquires an 
IP address if your 
network includes DHCP 
service. 
If a candidate has a password, 
it cannot be automatically 
added to a stack. In this case, 
if you want the Candidate in a 
stack, you must manually add 
it to the stack. 
Stack Name: N/A 
8-8