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AT-8000GS Series Gigabit Ethernet Switch Installation Guide
39
Units are reassigned Unit IDs
Units toggle between Stacking mode and Stand-alone mode
Each time the system reboots, the Startup configuration file in the Master
unit is used to configure the stack. If a stack member is removed from the
stack and then replaced with a unit with the same Unit ID, the stack
member is configured with the original device configuration. Only ports
which are physically present are displayed in the Web Management
Interface home page, and can be configured through the web
management system. Non-present ports are configured through the CLI or
SNMP interfaces.
Exchanging
Stacking
Members
If a stack member with the same Unit ID replaces an existing Unit ID with
the same Unit ID, the previous device configuration is applied to the
inserted stack member. If the new inserted device has either more ports or
less ports than the previous device, the relevant port configuration is
applied to the new stack member.
The Secondary Master replaces the Stacking Master if the following
events occur:
The Stacking Master fails or is removed from the stack.
Links from the Stacking Master to the stacking members fails.
A soft switchover is performed via the web interface or the CLI.
Switching between the Stacking Master and the Secondary Master results
in a limited service loss. Any dynamic tables are relearned if a failure
occurs. The Running Configuration file is synchronized between the
Stacking Master and the Secondary Master, and continues running on the
Secondary Master.