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Zorluk: Çok zorCisco DNA Center Enabled Device Management

An enterprise network engineer is using Cisco DNA Center Software Image Management (SWIM) to upgrade the Cisco IOS XE operating system across a cluster of access switches. The engineer imports the required software image into the Cisco DNA Center repository, marks it as the Golden Image for the switch family, and schedules the deployment. Cisco DNA Center successfully transfers the image file to the local flash storage of all target switches during the maintenance window. However, after the task finishes, all switches continue to run their previous operating system version and Cisco DNA Center flags the switches as non-compliant.

Which phase of the SWIM workflow was omitted or failed to execute?

  1. The image Activation step was not performed, leaving the switch boot variables pointed to the legacy software image file.Cevap
  2. B
    The local VLAN interfaces on the switches were missing an ip helper-address entry pointing to the Cisco DNA Center image repository.
  3. C
    Cisco DNA Center failed to receive CDP neighbor TLV advertisements containing the new software version from adjacent routers.
  4. D
    The engineer omitted sending an HTTP PUT REST request directly from an external configuration agent to overwrite the device running configuration.

Cevap

The image Activation step was not performed, leaving the switch boot variables pointed to the legacy software image file.
The Cisco DNA Center SWIM workflow separates file transfer from system update. The Distribution phase transfers the software image file into the flash memory of the managed device. To complete the upgrade, the Activation phase must be executed. Activation alters the device boot options, performs pre-upgrade checks, reloads the switch into the new software image, and verifies post-upgrade health.

Adım Adım Çözüm

1
Analyze the Cisco DNA Center SWIM lifecycle stages
Identify that SWIM consists of distinct stages: Import Image -> Mark as Golden -> Check Compliance -> Distribute Image -> Activate Image.
Understanding the separation between transferring files and applying images is essential for controller-based network management.
2
Evaluate the state of the switches in the scenario
The image was successfully copied to flash (Distribution completed), but the running software version did not change.
File transfer to flash memory does not automatically alter device boot environment variables or trigger a system reload.
3
Determine the missing required operation
Activation must be triggered in Cisco DNA Center to change boot statements, perform pre-checks, execute the reboot, and conduct post-activation verification.
Without Activation, the device reboots into (or remains running) the existing software version.

Anahtar Kavram

Cisco DNA Center Software Image Management (SWIM) Workflow
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Konular

Cisco DNA Center Enabled Device Management

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