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QFX5100-VC auto-upgrade procedure for adding a new member



Article ID: KB31309 KB Last Updated: 13 Dec 2016Version: 1.0

This article explains the procedure for adding a new member with auto-upgrade on a QFX5100-VC. It is useful for replacing an existing member with a new RMA.


One of a 3 member VC failed. A new RMA is received with Junos 14.1X53-D30, which is different from my current Junos running on a 2 member Xqfx5100 VC 14.1X53-D35.

Failure logs seen during auto-upgrade:

Jul 22 11:59:00 ch_vchassis_auto_upgrade_periodic: enabled=TRUE mixed=FALSE
Jul 22 11:59:00 ch_vchassis_auto_upgrade_periodic: member 2 package /var/tmp/jinstall-qfx-5-14.1X53-D30.5-domestic-signed.tgz
Jul 22 11:59:00 ch_vchassis_auto_upgrade_preparation: /var/tmp/jinstall-qfx-5-14.1X53-D30.5-domestic-signed.tgz
Jul 22 11:59:00 ch_vchassis_auto_upgrade_preparation: failed
Jul 22 11:59:00 ch_vchassis_auto_upgrade_periodic: failed preparation of package /var/tmp/jinstall-qfx-5-14.1X53-D30.5-domestic-signed.tgz
Jul 22 11:59:00 ch_vchassis_auto_upgrade_periodic: end_upgrade: ineligible=1, role=1
Jul 22 11:59:16 (fpc_sfxpc_pfe_resync_done) : FPC 2 CM_MSG_QFX_PFE_RESYNC_DONE ch_pfem_peered: 0xf

The minimum Junos version required is 14.1X53-D30 and above.

Steps for Junos Auto-Upgrade:
  1. Load image 14.1x53-d35 in the 2 member Qfx5100 VC.

    set virtual-chassis auto-sw-update package-name /var/tmp/jinstall-qfx-5-flex-14.1X53-D35.3-domestic-signed.tgz
    set chassis auto-image-upgrade

  2. The current Junos in VC should be 14.1X53-D3.5

  3. Use a standalone QFX5100 which has the image 14.1X53-D30.

    Enable set chassis auto-image-upgrade

  4. Now connect the standalone switch to the QFX5100 VC. Auto upgrade will be successful. We need to configure VC ports on the standalone and on the VC.

Juniper> show virtual-chassis

Virtual Chassis ID: 982e.f32b.a423
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 TA3715320519 qfx5100-48s-6q 128 Backup N VC 1 vcp-255/0/2
2 vcp-255/0/50
1 (FPC 1) Prsnt TA3715320792 qfx5100-48s-6q 128 Master* N VC 0 vcp-255/0/2
2 (FPC 2) Prsnt TA3715320132 qfx5100-48s-6q 128 Linecard N VC 0 vcp-255/0/50

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