300-415 · Question #240
How is the software managed in Cisco SD-WAN?
The correct answer is C. Software images must be uploaded to vManage through HTTP or FTP. Software images for Cisco SD-WAN devices are managed by first uploading them to the vManage controller, typically using HTTP or FTP, before they can be deployed to the fabric's nodes.
Question
Exhibit
Options
- ASoftware upgrade operation in the group must include vManage, vBond, and vSmart.
- BSoftware downgrades are unsupported for vManage.
- CSoftware images must be uploaded to vManage through HTTP or FTP.
- DSoftware images must be transferred through VPN 512 or VPN 0 of vManage.
How the community answered
(17 responses)- A6% (1)
- C94% (16)
Why each option
Software images for Cisco SD-WAN devices are managed by first uploading them to the vManage controller, typically using HTTP or FTP, before they can be deployed to the fabric's nodes.
While vManage, vBond, and vSmart are often upgraded in a specific sequence, the statement that *every* software upgrade operation *must* include all three as a group is not always true for all scenarios, and does not describe *how* software is managed.
Software downgrades are supported for vManage and other Cisco SD-WAN components to allow for rollbacks if an upgrade introduces issues.
To manage and deploy new software versions across the SD-WAN fabric, software images for all controllers and WAN Edge devices must first be uploaded to the vManage controller. This upload process commonly uses secure file transfer protocols like HTTP or FTP.
Software images are transferred *from* vManage to devices over the control plane tunnels (typically VPN 0), but the initial upload *to* vManage is typically via HTTP/FTP. VPN 512 is for out-of-band management traffic, not primary software distribution.
Concept tested: SD-WAN software image management
Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/command/sdwan-monitor-command-ref/m_upgrading_software.html
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