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Replacing a Member Switch of an EX Series Virtual Chassis Configuration (CLI Procedure)

Note: This topic applies to all EX Series Virtual Chassis except EX8200 Virtual Chassis. See Adding or Replacing a Member Switch or an External Routing Engine in an EX8200 Virtual Chassis (CLI Procedure) for information about EX8200 Virtual Chassis.

You can replace a member EX2200, EX3300, EX4200, EX4500, or EX4550 switch in a Virtual Chassis without disrupting network service on 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.

If you want to replace a member switch of a mixed Virtual Chassis that contains EX4200, EX4500, or EX4550 switches, see Removing an EX4200, EX4500, or EX4550 Switch From a Mixed Virtual Chassis (CLI Procedure).

To replace a member switch, use the procedure that matches what you need to accomplish:

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 for the member ID so that it can be reapplied when the member switch (with the same base MAC address) is reconnected.

To remove, repair, and reinstall the member switch:

  1. Power off and disconnect the member switch to be repaired.
  2. Repair, as necessary.
  3. Reconnect the switch and power it on.

Remove a Member Switch, Replace It 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 while retaining the previous 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, you can 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.

To remove and replace a switch and reapply the old configuration:

  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 one VCP on the replacement member switch to a VCP of another Virtual Chassis member switch and power the replacement member switch on.
  4. Confirm that the new member switch is now included in the Virtual Chassis configuration by checking the front-panel LCD for the member ID. It should display a member ID in the range from 0 through 9.
  5. Cable the other VCP on the new member switch to the Virtual Chassis.

    Caution: If you immediately cable both VCPs on the new switch into the existing Virtual Chassis at the same time, a member switch that was already part of the Virtual Chassis might become nonoperational for several seconds. Network traffic to this switch is dropped during the downtime.

    The member switch will return to the normal operational state with no user intervention, and normal operation of the Virtual Chassis will resume after this downtime.

  6. On the master switch, Issue the request virtual-chassis renumber command from the Virtual Chassis master to change the member switch’s current member ID to the member ID of the member switch that was removed from the Virtual Chassis configuration.

Remove a Member Switch and Make Its Member ID Available for Reassignment to a Different Switch

When you remove a member switch from the Virtual Chassis configuration, the master keeps that member switch’s member ID in reserve. To make that member switch’s member ID available for reassignment, issue the request virtual-chassis recycle command from the Virtual Chassis master.

Note: When you add or delete members in a Virtual Chassis configuration, internal routing changes might cause temporary traffic loss for a few seconds.

 

Related Documentation

 

Published: 2013-01-30

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