Advanced Traffic Management Guide K/KA/KB.15.15

Specific rules
Table 31 Specific rules for commander, candidate, and member switch
SNMP CommunitiesPasswordsNumber Allowed Per StackIP Addressing and
Stack Name
Standard SNMP
community operation.
The Commander also
operates as an SNMP
proxy to Members for
all SNMP communities
configured in the
Commander.
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.
Only one Commander
switch is allowed per stack.
IP Addr: Requires an
assigned IP address
and mask for access via
the network.
Stack Name:
Required
Commander
Uses standard SNMP
community operation if
the Candidate has its
own IP addressing.
Passwords optional. If
the Candidate
becomes a stack
Member, it assumes
the Commander's
Manager and
Operator passwords.
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.
n/aIP Addr: Optional.
Configuring an IP
address allows access
via Telnet or WebAgent
while the switch is not
a stack member. In the
factory default
configuration the switch
automatically acquires
an IP address if your
network includes DHCP
service.
Stack Name: N/A
Candidate
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
community that is
configured only in the
Commander.
When the switch joins
the stack, it
automatically assumes
the Commander's
Manager and
Operator passwords
and discards any
passwords 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.
Up to 15 Members per
stack.
IP Addr: Optional.
Configuring an IP
address allows access
via Telnet or WebAgent
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
replacement
Commander.
Stack Name: N/A
Member
288 Stack management for the 3500, 3500yl, 6200yl and 6600 switches