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Zorluk: ZorCisco DNA Center Enabled Device Management

An enterprise network engineer is using Cisco DNA Center Software Image Management (SWIM) to standardize software images across a fleet of Catalyst access switches. A target switch is currently flagged as non-compliant against the designated Golden Image. When the engineer initiates the software image distribution and activation workflow from Cisco DNA Center, which operational sequence does the controller follow to complete the upgrade?

  1. Cisco DNA Center runs pre-upgrade checks, copies the Golden Image file to the switch storage, verifies checksum integrity, updates the boot order, reboots the switch, and performs post-upgrade compliance checks.Cevap
  2. B
    Cisco DNA Center sends HTTP GET requests to directly modify the running configuration of the switch, forcing an immediate boot from the controller's remote URL without transferring the image file to local storage.
  3. C
    Cisco DNA Center broadcasts the software image payload across Layer 2 trunk ports using CDP TLVs to replicate the Golden Image to all neighbor switches in parallel.
  4. D
    Cisco DNA Center requires a local agent daemon inside the switch Guest Shell to pull the image over an unencrypted TFTP connection before manually compiling the binaries.

Cevap

Cisco DNA Center runs pre-upgrade checks, copies the Golden Image file to the switch storage, verifies checksum integrity, updates the boot order, reboots the switch, and performs post-upgrade compliance checks.
The correct answer accurately outlines the step-by-step process of Cisco DNA Center Software Image Management (SWIM). SWIM performs pre-checks (such as storage availability validation), securely distributes the software image to the switch local flash, validates the checksum to prevent image corruption, updates the device boot options, reboots the switch to load the new image, and runs post-checks to confirm device health and Golden Image compliance.

Adım Adım Çözüm

1
Analyze the Software Image Management (SWIM) workflow in Cisco DNA Center.
SWIM is structured into two main operational phases: Distribution (copying image to device) and Activation (applying and rebooting).
Separating distribution from activation allows network administrators to pre-stage software images during production hours and schedule activations during maintenance windows.
2
Identify the automated checks and execution steps performed during SWIM execution.
Pre-upgrade checks verify disk space and hardware compatibility, the image file is transferred securely, MD5/SHA integrity checks confirm file soundness, boot variable statements are updated, the switch reboots into the new software version, and post-upgrade validation confirms operational health and golden image compliance.
These structured validation steps ensure minimal risk of device corruption or unrecoverable boot failure during automated controller-led updates.

Anahtar Kavram

Cisco DNA Center Software Image Management (SWIM) Workflow
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Cisco DNA Center Enabled Device Management

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