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Removing two members switches from (four members in a Virtual Chassis)

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Hi All 

 

I have four ex-4300 switches configured in a single virtual chassis.  FPC-1 is my master and FPC-0 is my backup , FPC 2 and FPC 3 are in linecard role. I want to perform the following things with out loosing the configuration and master role of my switch :

Virtual chassis configured in preprovisioned role. Kindly help me how I can do these tasks as i am totally new to Juniper side.

 

1) Change the Backup Role from FPC -0 to FPC-3.

2) After that FPC1 would be my master and FPC 3 would be my backup. FPC 0 and FPC-2 would be in linecard role.

3) Then I want to remove FPC 0 and FPC 2 from this virtual chassis.

4) After the removal of FPC 0 and FPC 2 , Only two members ( FPC 1 and FPC 3 will left in that virtual chassis).

5) I want to change  FPC 1 to FPC 0 ( MASTER) and FPC 3 TO FPC 1 ( Backup).

 

Config is mentioned below : 

-------------------------------------------------------------------------------

root@sw5.mtl4> show virtual-chassis status

Preprovisioned Virtual Chassis
Virtual Chassis ID: 8fa1.ded1.a1d1
Virtual Chassis Mode: Enabled
Mstr Mixed Route Neighbor List
Member ID Status Serial No Model prio Role Mode Mode ID Interface


0 (FPC 0) Prsnt PE3717273221 ex4300-48t 129 Backup N VC                  1 vcp-255/1/0

                                                                                                                                                   2 vcp-255/1/1
1 (FPC 1) Prsnt PE3717278547 ex4300-48t 129 Master* N VC                3 vcp-255/1/0
                                                                                                                                                    0 vcp-255/1/1
2 (FPC 2) Prsnt PE3717274806 ex4300-48t 0 Linecard N VC                    0 vcp-255/1/0
                                                                                                                                                   3 vcp-255/1/1
3 (FPC 3) Prsnt PE37172704790 ex4300-48t 0 Linecard N VC                    2 vcp-255/1/0
                                                                                                                                                  1 vcp-255/1/1

{master:1}
root@sw5.mtl4>

-------------------------------------------------------------------------------------------------------------------------------------------------

{master:1}
root@sw5.mtl4> show configuration virtual-chassis | display set
set virtual-chassis preprovisioned
set virtual-chassis member 0 role routing-engine
set virtual-chassis member 0 serial-numberPE3717273221
set virtual-chassis member 1 role routing-engine
set virtual-chassis member 1 serial-number PE3717278547 
set virtual-chassis member 2 role line-card
set virtual-chassis member 2 serial-number PE3717274806
set virtual-chassis member 3 role line-card
set virtual-chassis member 3 serial-number PE37172704790

{master:1}
root@sw5.mtl4>


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