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Virtual chassis rebuild
Posted: 30 Nov 2025 04:15
by dtdamen
Hi guys,
I`ve got a single Alcatel 6560 running in a productive enviroment. Now I´d like to expand this device to a virtual chassis with 2 devices.
I know that, when I connect a second device to the first master device via DAC cable, that nothing will happen. The second device also
comes up as a second master and thats it.
Is there any chance to get the VC installed without the need for a complete re-installation (all *.cfg files delete on both devices, restart both devices and vc will build up)?
Thanks
Thomas
Re: Virtual chassis rebuild
Posted: 30 Nov 2025 05:42
by Cristek
Should be fairly simple, at least on paper:
Check the current chassis-group of your already existing device (in this example its 45):
->
-> cd working
-> more vcsetup.cfg
!========================================!
! File: /flash/working/vcsetup.cfg !
!========================================!
! Virtual Chassis Manager:
virtual-chassis chassis-id 1 configured-chassis-id 1
virtual-chassis auto-vf-link-port 1/1/27
virtual-chassis auto-vf-link-port 1/1/28
virtual-chassis chassis-id 1 chassis-group 45
!
! PLEASE DO NOT MODIFY THE AREAS OF [SAVED INFO xxx]
! [SAVED INFO VC IDs] 3
!
! IP:
->
->
Then, boot the second switch as a standalone device in your lab.
Edit the vcsetup.cfg with vi, or create one in your favorite text editor.
This file should manually assign the ID of 2 where a '1' is present. You should also change the chassis-group to match the main switch. Something like this:
virtual-chassis chassis-id 2 configured-chassis-id 2
virtual-chassis auto-vf-link-port 2/1/27
virtual-chassis auto-vf-link-port 2/1/28
virtual-chassis chassis-id 2 chassis-group 45
Then plug in the DAC cables and the second switch will reboot to join the stack.
Check status with show virtual-chassis topology
Re: Virtual chassis rebuild
Posted: 30 Nov 2025 05:45
by dtdamen
Perfect, thanks bunches for your quick reply
Regards,
Thomas
Re: Virtual chassis rebuild
Posted: 17 Feb 2026 06:47
by dtdamen
Hi guys,
for whatever reason, it does not work.
I´ve got a running switch with the following vcsetup configuration:
more vcsetup. cfg
! Fi le: /f lash/working/vcsetup. cf g
! Vi rtual Chassis Manager:
virtual-chassis chassis-id 1 conf igured-chassis-id 1
virtual-chassis vf-l ink-mode auto
virtual- chassis auto-vf-l ink-port 1/1/53
virtual-chassis auto-vf-l ink-port 1/1/54
virtual-chassis chassis-id 1 chassis-group 45
Have re-started a brand new switch from scratch and have edited both vcsetup files (working and certified directory)
more vcsetup. cfg
! Fi le: /f lash/working/vcsetup.cfg
! Vi rtual Chassis Manager:
virtual-chassis chassis- id 2 configured-chassis- id 2
virtual-chassis vf-l ink-mode auto
virtual-chassis auto-vf-l ink-port 2/1 / 53
virtual-chassis auto-vf-l ink-port 2/1 / 54
virtual-chassis chassis-id 2 chassis-group 45
cd /flash/certified
more vcsetup.cfg
! Fi le: /flash/working/vcsetup.cfg
! Virtual Chassis Manager:
virtua-chassis chassis- id 2 configured-chassis- id 2
virtua -chassis vf-l ink-mode auto
virtual-chassis auto-vf-l ink-port 2/1 / 53
virtual-chassis auto-vf-l ink-port 2/1 / 54
virtual-chassis chassis-id 2 chassis-group 45
After connecting DAC cable and re-start the new sitch does not join the VC
Jan 2
. isisVc vcprot INFO message:
+++ vcxEI ect ionT i merExpi rat ion@1381 :
I am the Master: chassisld 2 chassisMac 78:24:59:88:90:df
CMM has reached the ready state Cl-8]
hass is Superv isi on:
Jan 2
. vcmCmm m ip INFO message:
tcn_t raps@15845: Generate trap chassisStatusChange (120) (chassis 1,
CMM: vcmCMM send
CMM: raps@15845: Generate trap chass sStatusChange (120) (chassis 2,
Jan 2
. Chass sSuperv i sor rel oadMgr INFO message:
Redundancy t i me
exp red
updat ing next running to "Ork ing
status Reboot -NotJoined, ret 0)
status Reboot -Added, ret 0)
What steps I´m doing wrong?
Thanks
Thomas
Re: Virtual chassis rebuild
Posted: 17 Feb 2026 14:33
by Cristek
You have spaces in the vf link ports
You have 2/1 / 53 instead of 2/1/53
Other than this at a first look I dont see anything else