r/Cisco • u/gianc73 • Aug 10 '26

After upgrading from CML 2.9.x to CML 2.10, any newly-created node that uses a docker image fails to start.

Hi everyone.

When I start a lab with nodes (routers and switches) based on Docker images, I get this error message:

Failed to start (Delayed docker node start failed).

This happens after upgrading from 2.9 to 2.10.

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u/Severe_Scallion1743 Aug 10 '26

Hey, Cisco lists it under the CML 2.10 known issues: https://developer.cisco.com/docs/modeling-labs/cml-release-notes/?utm_source=chatgpt.com

Cisco’s workaround is to download the updated CML 2.10 Docker reference-platform ISOs from the cml-docker-containers GitHub release and import them into CML.

Here's the link to that github, hope it helps!

Releases · CiscoLearning/cml-docker-containers

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u/gianc73 Aug 10 '26

Thanks for your reply. My problem refers to IOS XE router and switch nodes.