Configuring Switches in a Stack
3-12 Hardware Installation
Once
installed
in
a
stack,
the
switches
behave
and
perform
as
a
single
switch.
As
such,
you
can
start
with
a
single
switch
and
add
more
switches
as
your
network
expands.
You
can
also
mix
different
products
in
the
family
in
a
single
stack
to
provide
a
desired
combination
of
port
types
and
functions
to
match
the
requirements
of
individual
applications.
In
all
cases,
a
stack
of
switches
performs
as
one
large
product,
and
is
managed
as
a
single
network
entity.
When
switches
are
installed
and
connected
as
described
back
in
“
Connecting
High
‐
Speed
Stacking
Cables
”
on
page 3
‐
10,
the
following
occurs
during
initialization:
•
The
switch
that
will
manage
the
stack
is
automatically
established
and
is
referred
to
as
the
Manager
switch.
•
All
other
switches
are
established
as
Member
switches
in
the
stack.
•
The
hierarchy
of
the
switches
that
will
assume
the
function
of
backup
manager
is
also
determined
in
case
the
current
manager
malfunctions,
is
powered
down,
or
is
disconnected
from
the
stack.
•
The
Console
port
on
the
manager
switch
remains
active
for
out
‐
of
‐
band
(local)
switch
management,
but
the
Console
port
on
each
member
switch
is
deactivated.
This
enables
you
to
set
the
IP
address
and
system
password
using
a
single
Console
port.
Now
each
switch
can
be
configured
locally
using
only
the
manager’s
Console
port,
or
in
‐
band
using
a
remote
device
and
the
CLI
set
of
commands
described
in
this
section.
For
procedures
used
for
various
types
of
connections
to
the
Console
port,
refer
to
“
Connecting
to
Console
Port
for
Local
Management
”
on
page 3
‐
17.
Once
a
stack
is
created
(more
than
one
switch
is
interconnected),
the
following
occurs:
1.
Switch
(unit)
IDs
are
arbitrarily
assigned
on
a
first
‐
come,
first
‐
served
basis.
2.
Switch
IDs
are
saved
against
each
module.
Then,
every
time
a
board
is
power
‐
cycled,
it
will
initialize
with
the
same
switch
ID.
This
is
important
for
port
‐
specific
information
(for
example:
ge.4.12
is
the
12th
Gigabit
Ethernet
port
on
switch
number 4).
3.
The
management
election
process
uses
the
following
precedence
to
assign
a
management
device:
a.
Previously
assigned/elected
management
switch
b. Management
assigned
priority
(values
1–15)
c.
Hardware
preference
level
d. Highest
MAC
Address
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