TP-Link T1700G-28TQ User Manual page 59

2. When the stack is running, if you want to change the unit number manually, only the
unit numbers which have not been occupied by the other member devices are
available for you to choose from.
Port Number Format:
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The format of port number should be Unit Number/Slot Number/Port Number. Among
them:
(1) Unit Number: The default unit number of the switch is 1. If a device has joined stack
system, the unit number which the device possesses in the stack system will be kept
using as its unit number after the device leaves the stack system.
(2) Slot Number: Indicates the number of the slot the interface card is in. For
T1700G-28TQ, the front panel ports belong to slot 0.
(3) Physical Port Number: The physical port number on the switch which can be
obtained through the front panel of the switch.
For instance: Port number 2/0/3 indicates the physical port3 on the switch whose unit
number is 2.
Stack Configuration Files
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Generally, the configuration files fall into two parts: the start-up configuration files and the
running configuration files. The start-up configuration files are saved in the file system,
while the running configuration files are the configuration files in effect. Running
configuration files will be lost after a reboot, unless you save the running configurations
into the start-up configuration files manually.
The stack master contains the saved and running configuration files for the stack. The
stack configuration files include two parts.
(1) The global configuration settings that apply to all stack members.
(2) The interface configuration settings that are specific for each stack member
For back-up purposes, all the stack members receive synchronized copies of the
configurations files form the stack master. If the stack master becomes unavailable, all
stack members have the latest stack configuration files and are eligible to be the stack
master.
In a stack establishing process, the member switches will start up with the master's global
start-up configuration settings, and their interfaces will apply the default interface
configurations, assuming that there is no provisioned configuration in the stack.
If a new switch joins a switch stack, it will become a switch member and start up with the
stack master's global running configuration settings. The stack member's interface
configurations is associated with its stack member number. As mentioned in
The stack member retains its member number until it is manually changed or it conflicts an
existing stack member.
If an interface-specific configuration exists for this member number, the stack member will
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use the interface-specific configuration associated with that member number.
If no interface-specific configuration exists for this member number, the stack member will
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use the default interface configuration.
Stack Offline Configuration
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Offline configuration feature enables you to configure a new switch in advance before it
joins the stack, which means you can configure the stack unit number, the switch type, and
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Unit Number,