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9-7
Configuring Advanced Features
Stack Management
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In the default stack configuration, the Candidate
Auto Join
parameter is
enabled, but the Commander
Auto Grab
parameter is disabled. This prevents
Candidates from automatically joining a stack prematurely or joining the
wrong stack (if more than one stack Commander is configured in a subnet or
broadcast domain). If you plan to install more than one stack in a subnet, SMC
recommends that you leave
Auto Grab
disabled on all Commander switches and
manually add Members to their stacks. Similarly, if you plan to install a stack
in a subnet (broadcast domain) where stacking-capable switches are not
intended for stack membership, you should set the
Stack State
parameter (in
the Stack Configuration screen) to
Disabled
on those particular switches.
Overview of Configuring and Bringing Up a Stack
This process assumes that:
■
All switches you want to include in a stack are connected to the same
subnet (broadcast domain).
■
If VLANs are enabled on the switches you want to include in the stack,
then the ports linking the stacked switches must be on the primary
VLAN in each switch (which, in the default configuration, is the
default VLAN). If the primary VLAN is tagged, then each switch in the
stack must use the same VLAN ID (VID) for the primary VLAN. (See
“Which VLAN Is Primary?” on page 9-50, and “Stacking Operation with
Multiple VLANs Configured” on page 9-44.)
Member
IP Addr:
Optional.
Configuring an IP
address allows access
via Telnet or web
browser interface
without going through
the Commander switch.
This is useful, for
example, if the stack
Commander fails and
you need to convert a
Member switch to
operate as a replace-
ment Commander.
Stack Name:
N/A
Up to 15 Members
per stack.
When the switch joins the
stack, it automatically
assumes the Commander’s
Manager and Operator pass-
words and discards any pass-
words it may have had while a
Candidate.
Note:
If a Member leaves a
stack for any reason, it retains
the passwords assigned to the
stack Commander at the time
of departure from the stack.
Belongs to the same SNMP
communities as the
Commander (which serves
as an SNMP proxy to the
Member for communities to
which the Commander
belongs). To join other
communities that
exclude
the Commander, the
Member must have its own
IP address. Loss of stack
membership means loss of
membership in any commu-
nity that is configured only
in the Commander. See
"SNMP Community Opera-
tion in a Stack" on page 9-43.
IP Addressing and
Stack Name
Number Allowed
Per Stack
Passwords
SNMP Communities