Cisco 500 Series Administration Guide

Administration: Stack Management
Stack Unit Mode
Cisco 500 Series Stackable Managed Switch Administration Guide 84
5
Consistency of Stack Unit Modes in the Stack
All units in the stack must have the same stack unit mode.
When the stack is initialized, it runs a topology discovery algorithm that collects
information on the units of the stack.
After a unit is selected to become the master, it can reject its neighbor’s request to
join the stack if it has an inconsistent stack unit mode. When a unit is rejected
because of its stack unit mode, it is logically shutdown (the ports cannot send/
receive traffic) and all its LEDs (system, FAN, unit IDs, network ports and stack
ports LEDs) are turned on. The information regarding the stack unit mode is
displayed as a SYSLOG error in the master unit.
Stack consists of mixed device
types in Basic Hybrid mode.
• Master: Either SG500X,
ESW2-550X or Sx500s
• Backup: Either type of
device
• Slaves: Either type of device
Not
supported.
1G/5G
Stack consists of mixed device
types in Advanced Hybrid mode.
• Master: SG500X
• Backup: SG500X
• Slaves: Either type of device
Enabled/
Disabled
1G/5G
Stack consists of mixed device
types in Advanced Hybrid XG
mode.
• Master: SG500X/ESW2-
550X or SG500XG
• Backup: SG500X/ESW2-
550X or SG500XG
• Slaves: Either type of device
Enabled/
Disabled
1 G or 10G
Possible Stack Configuration Possible RIP/
VRRP
Support
Stack Ports Speed

Cisco 500 Series Specifications

General

Model	Cisco 500 Series
Category	Switch
Mounting	Rack-mountable
Management	Web-based, CLI, SNMP
Ports	24, 48
Port Speed	10/100/1000 Mbps
PoE Support	Available on some models
Switching Capacity	Up to 176 Gbps
MAC Address Table Size	16, 000 entries
Security	ACLs, 802.1X
Quality of Service (QoS)	Yes
Dimensions	Varies by model
Weight	Varies by model
Humidity	10% to 90% non-condensing
Power Supply	Internal
Power Consumption	Varies by model
Jumbo Frame Support	Up to 9216 bytes