Table 11. State Change Table - Allied Telesis x600-48Ts Installation Manual

Event on Master Node
Both stack links removed
XEM-STK Removed or Faulty No change
Hardware reset (or fault)
Run the NO STACK ENABLE
3
command
Software application problem
(lock-up or continual crashes)
Software crash or lock-up
Power-down or PSU failure
Event on Stack Member
Node
Both stack links removed
XEM-STK removed or faulty
Hardware reset (or fault)
Run the NO STACK ENABLE
3
command
Software application failover
(lock-up or continual crashes)
software crash or lock-up
Power-down / PSU failure
The fallback action on a slave is first to run the fallback config script. Where there is no fallback
1.
script, the switch will disable all its switch ports.
The stack member assumes the role of stack master. In specific situations, this condition could
2.
result in a stack containing two masters. This would present problems with network management
and the control of links that were previously aggregated.
3. The following situation will apply to a switch that has been removed from the stack by the using the
NO STACK ENABLE command:
— The switch will be unaware of further faults within the stack it of which it was previously a mem-
ber.
— If this switch is powered cycled, all links previously shutdown will remain down as a result of
running the NO STACK ENABLE command".
4. If the slave's ports are still up, this may cause downstream switches with trunked ports to operate incorrectly.

Table 11. State Change Table

Reaction on Reaction on Stack
Master
With Resiliency Link
No change
Fallback action
Fallback action
Reset / offline Re-elect master
No change
Fallback action
Reboot as stack Re-elect master
member
Re-elect master
4
Frozen
Powered down Re-elect master
Reaction on Reaction on Stack
Master
No change
Fallback action
No change
Fallback action
No change Reset/offline
No change
Fallback action
No change Re-boot as slave
No change
Frozen
No change Powered Down
x600 Series Layer 3 Gigabit Ethernet Switches Installation Guide
Member
Without Resiliency Link
1
Re-elect master
1
Re-elect master
Re-elect master
Not allowed
1
Displays Error Message
Re-elect master
Re-elect master
Re-elect master
Member
1
Re-elect master
1
Re-elect master
Reset/offline
1
Fallback action
Reboot as stack member
4
Frozen
Powered down
Reaction on Stack
Member
2
2
2
Reaction on Stack
Member
2
2
1
4
53