DvR Leaf to vIST Migration in OneStepp

Sanktis — Fri, 21 Aug 2026 11:51:37 GMT

Hello,

I am currently trying to switch our DVR Leaf Nodes from DVR to vIST clustering. Since we have a number of nodes that need to be converted, I am looking for a way to do this remotely without requiring console access.

We are using XIQ SE. I tried to solve this using a script that I would execute, but unfortunately, I can't find a way to do it in a script without requiring a reboot between disabling the DVR flag (no dvr) and applying the vIST configuration.

When I run the script manually, I get stuck as follows:

vsp4-cf-1:1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
vsp4-cf-1:1(config)#no router isis enable
WARNING:Disable ISIS will cause traffic disruption
Do you want to continue (y/n) ? y
WARNING: All ACLs and ACE entries under the ACLs will be disabled when DVR Leaf is deleted
vsp4-cf-1:1(config)#router isis
vsp4-cf-1:1(config-isis)#no spbm 1 smlt-peer-system-id
vsp4-cf-1:1(config-isis)#no spbm 1 smlt-virtual-bmac
vsp4-cf-1:1(config-isis)#no boot config flags dvr-leaf-mode
Warning: dvr-leaf-mode flag is disabled
Warning: Please save configuration and reboot the switch
for this to take effect.
vsp4-cf-1:1(config)#no dvr leaf virtual-ist
vsp4-cf-1:1(config)#no dvr leaf
vsp4-cf-1:1(config)#show dvr
************************************************************************************
Command Execution Time: Thu Aug 20 17:21:45 2026 CEST
************************************************************************************
There is no DVR instance.
vsp4-cf-1:1(config)#
vsp4-cf-1:1(config)#router isis
vsp4-cf-1:1(config-isis)#spbm 1 smlt-virtual-bmac 00:xx:xx:xx:xx:FF
vsp4-cf-1:1(config-isis)#spbm 1 smlt-peer-system-id xxxx.xxxx.xxxx 
vsp4-cf-1:1(config-isis)#spbm 1 ip enable
Error: IP commands are not supported on DVR Leaf

The alternative option would be to simply load the new configuration and perform a reboot. This works in principle. However, after the reboot, I still have to run the following two commands again. After that, the vIST config works—even though those commands are already included in the configuration.

virtual-ist peer-ip x.x.x.x vlan xxx
router isis enable
sa co

* MAC, IDs, IPs were masked in this commands.

Used VOSS Version 9.4.1.0.

Is anyone aware of a way to perform the migration from DVR Leaf to VIST without having to make further adjustments via console cable after the reboot?

Cheers
Florian

topic DvR Leaf to vIST Migration in OneStepp in ExtremeSwitching (VSP/Fabric Engine)

DvR Leaf to vIST Migration in OneStepp