Moving a PE unit and retaining its ID (manual methods)

Note: Using the spx allow-pe-movement command allows PEs to retain their IDs when they are disconnected and moved to another physical port. Refer to Configuring SPX to move PE units without changing IDs for more information.
There are two ways to move a PE unit or a chain of PE units to a different CB port and retain the PE ID so the port configurations under the PE ID that has been moved do not require changes.
  1. On the CB, change or add the pe-id configuration for the CB port.
  2. Remove the pe-id configuration of the affected PE units (both moved and retained units) so the ID assignment is based on the suggested ID or the previous ID assigned to the PE unit.

Consider the two configurations shown in the following figure.

Moving PE units from one CB port to another

Suppose you want to move PE unit 18 to SPX port 1/1/5 on the CB. If you do not change the pe-id configuration from the CB, PE unit 18 will be assigned a new ID. PE unit 19, still connected on SPX port 1/1/10, becomes PE unit 18. As a result, the port configurations for PE unit 18 and 19 no longer apply to the renumbered units.

The following procedures describe the two options for retaining the PE ID for the moved PE unit.

In this section:

  1. Method 1: Prepare a new topology by reconfiguring PE IDs on the CB
  2. Method 2: Allow suggested ID or previous unit ID assignment
Parent topic: Campus Fabric Management