Upload the image to CPEs prior to upgrade

Upload the image to SD-WAN devices prior to upgrade since uploading the image from director to SD-WAN device is going to take time. Initiate image upload from director to SD-WAN devices few days (atleast one or two days) prior to upgrade.

Click on “Upload Only” option in director to upload the image but not to upgrade.

Change maximum parallel uploads if needed.

By default, Versa Director uploads images to a maximum of five devices simultaneously, even if more than five devices are selected for upload through the GUI or API. Additional uploads will commence only once the upload for one or more of the initial five devices is completed. This process will continue until the image upload is complete for all devices selected. If you wish to upload images to more than five devices concurrently, you can modify the maximum parallel upload setting using the Director CLI, as detailed below:

Administrator@SDWAN-VOAE1% set system settings max-num-of-parallel-uploads ?
Description: Maximum number of parallel appliance upgrades
Possible completions:
<unsignedShort, 5 .. 100>[5]
Administrator@SDWAN-VOAE1% set system settings max-num-of-parallel-uploads 20
[ok][2025-02-11 22:42:04]

[edit]
Administrator@SDWAN-VOAE1% show | compare
system {
settings {
+ max-num-of-parallel-uploads 20;
}
}
[ok][2025-02-11 22:42:07]

[edit]
Administrator@SDWAN-VOAE1%

Configure File upload bandwidth limit and upload timeout

If SD-WAN branch device is running at site with very limited WAN bandwidth such as ATM location or ship using satellite link, use below option to configure max bandwidth to be used for image upload and also set upload timeout limit:

Go to Configuration -> Device Groups, chose device group and enter File upload BW limit and File upload Timeout.