2-14
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-03
Chapter 2 Switch Installation
StackPower Cabling Configurations
Figure 2-12
shows a nine-switch data stack configured with three power stacks. A power stack can
include a maximum of four switches. You can configure multiple power stacks within a data stack, but
a power stack that spans multiple data stacks is not supported.
Figure 2-12
Power Stacking Catalyst 3750-X Switches within a Switch Data Stack
StackPower Partitioning Examples
Figure 2-13
and
Figure 2-14
show StackPower stacks of Catalyst 3750-X switches with failover
conditions. In
Figure 2-13
, the StackPower cable 2 is faulty. Therefore, this stack does not provide
redundancy.
Figure 2-13
Example of a StackPower Stack with a Failover Condition
In
Figure 2-14
, StackPower port B on the center switch has failed and this stack partitions into two
stacks. The top two switches share power, and the bottom switch is now a separate stack.
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
P
S
OK
AC OK
P
S
OK
CON
S
OLE
RE
S
ET
AUX
STACK 1
STACK 2
S
-PWR
XP
S
S
-PWR
AC OK
C
3
KX-PWR-715W
AC
P
S
OK
AC OK
C
3
KX-PWR-715W
AC
P
S
OK
253398
S
TACK 1
S
TACK 2
S
TACK 1
S
TACK 2
S
TACK 1
S
TACK 2
253401
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2
3