https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111972#M5079 Hello, for all router nodes, the interface type is a Gigabit Ethernet network interface, IOSv images do not support serial interfaces, unfortunately.<BR /><BR />Hope this helps. Wed, 01 Jul 2020 16:40:27 GMT bigevilbeard 2020-07-01T16:40:27Z https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111922#M5077 <P>Sorry for the noob question. To which IOSv router device it is possible to add serial interface in CML lab? I only&nbsp; see ethernet gig interfaces under the Interface menu item.</P> Wed, 01 Jul 2020 15:04:33 GMT https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111922#M5077 kstatinet 2020-07-01T15:04:33Z https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111943#M5078 <P>Seems like, serial interfaces are currently not an option on the routers in CML. Judging by no replies to my question.</P><P>Not great, but at least this a free project from Cisco</P> Wed, 01 Jul 2020 15:52:46 GMT https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111943#M5078 kstatinet 2020-07-01T15:52:46Z https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111972#M5079 Hello, for all router nodes, the interface type is a Gigabit Ethernet network interface, IOSv images do not support serial interfaces, unfortunately.<BR /><BR />Hope this helps. Wed, 01 Jul 2020 16:40:27 GMT https://community.cisco.com/t5/devnet-sandbox/cml-lab/m-p/4111972#M5079 bigevilbeard 2020-07-01T16:40:27Z