Cisco Catalyst 3750-X User Manual

5-19
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 5 Managing Switch Stacks
Understanding Switch Stacks
Stack master election
specifically determined
by the cryptographic
software image and the IP
services feature set and
the IP services feature set
Assuming that all stack members have the
same pr
iority value:
1. Make sure that one stack member has
the cryptographic image installed and
the IP services feature set enabled and
that the other stack member has the
noncryptographic image installed and
the IP services feature set enabled.
2. Restart both stack members at the same
time.
The stack member with the cryptographic image and
the IP servic
es feature set is elected stack master.
Note Only Catalyst 3650-E or 3750 switches
running Cisco IOS Release 12.2(53)SE or
earlier could be running the
noncyrptographic image.
Stack master election
specif
ically determined
by the cryptographic
software image and the IP
base feature set
Assuming that all stack members have the
same pr
iority value:
1. Make sure that one stack member has
the cryptographic image installed and
the IP base feature set enabled and that
the other stack member has the
noncryptographic image installed and
the IP base feature set enabled.
2. Restart both stack members at the same
time.
The stack member with the cryptographic image and
the IP base fea
ture set is elected stack master.
Note Only Catalyst 3650-E or 3750 switches
running Cisco IOS Release 12.2(53)SE or
earlier could be running the
noncyrptographic image.
Stack master election
specif
ically determined
by the MAC address
Assuming that both stack members have the
same priority value, configuration file, and
feature set, restart both stack members at
the same time.
The stack member with the lower MAC address is
elected sta
ck master.
Stack member number
conf
lict
Assuming that one stack member has a
higher priority value than the other stack
member:
1. Ensure that both stack members have
the same stack member number. If
necessary, use the switch
current-stack-member-number
renumber new-stack-member-number
global configuration command.
2. Restart both stack members at the same
time.
The stack member with the higher priority value
re
tains its stack member number. The other stack
member has a new stack member number.
Add a stack member
1. Power off the new switch.
2. Through their StackWise Plus ports,
connect the new switch to a powered-on
switch stack.
3. Power on the new switch.
The stack master is retained. The new switch is
added to the sw
itch stack.
Table 5-2 Switch Stack Configuration Scenarios (continued)
Scenario Result

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing