Cisco 500 Series Administration Manual page 86

Administration: Stack Management
Stack Unit Mode
Cisco 500 Series Stackable Managed Switch Administration Guide
Possible Stack Configuration
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
Stack consists of mixed device
types in Advanced Hybrid mode.
• Master: SG500X
• Backup: SG500X
• Slaves: Either type of device
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
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.
Possible RIP/ Stack Ports Speed
VRRP
Support
Not 1G/5G
supported.
Enabled/ 1G/5G
Disabled
Enabled/ 1 G or 10G
Disabled
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