Juniper Networks EX4200 - Manual (Page 208)

Replacing a Member Switch of a Virtual Chassis Configuration (CLI Procedure)
You can replace a member switch of a Virtual Chassis configuration without disrupting
network service for the other members. You can retain the existing configuration of
the member switch and apply it to a new member switch, or you can free up the
member ID and make it available for assignment to a new member switch.
To replace a member switch, use the procedure that matches what you need to
accomplish:
■ Remove, Repair, and Reinstall the Same Switch on page 182
■ Remove a Member Switch, Replace with a Different Switch, and Reapply the
Old Configuration on page 182
■ Remove a Member Switch and Make Its Member ID Available for Reassignment
to a Different Switch on page 183
Remove, Repair, and Reinstall the Same Switch
If you need to repair a member switch, you can remove it from the Virtual Chassis
configuration without disrupting network service for the other members. The master
stores the configuration of the member ID so that it can be reapplied when the
member switch (with the same base MAC address) is reconnected.
1. Power off and disconnect the member switch to be repaired.
2. Repair, as necessary.
3. Reconnect and power on the member switch.
Remove a Member Switch, Replace with a Different Switch, and Reapply the Old
Configuration
If you are unable to repair a member switch, you can replace it with a different
member switch and retain the old configuration. The master stores the configuration
of the member that was removed. When you connect a different member switch,
the master assigns a new member ID. But the old configuration is still stored under
the previous member ID of the previous member switch.
NOTE: If you have used a preprovisioned configuration, use the replace command
to change the serial number in the Virtual Chassis configuration file. Substitute the
serial number of the replacement member switch (on the back of the switch) for the
serial number of the member switch that was removed.
1. Power off and disconnect the member switch to be replaced.
2. If the replacement member switch has been previously configured, revert that
switch’s configuration to the factory defaults. See Reverting to the Default Factory
Configuration for the EX Series Switch.
3. Connect and power on the replacement member switch.
182 ■ Replacing a Member Switch of a Virtual Chassis Configuration (CLI Procedure)
Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches