Add a new CML Free hybrid topology

* Update README.MD

Added note about enabled performance counters in ESXI deployments

* Update README.MD

Fixed formatting

* Update README.MD

Added note about enabling performance counters in ESXI.

lab-topologies/README.md

@@ -0,0 +1,20 @@
+# Cisco Modeling Labs (CML) Use Cases
+
+This directory contains sample topologies that can be loaded within CML.
+
+## Topologies in This Repository
+
+- Explore the subdirectories for available sample topologies hosted here.
+
+## External Use Cases
+
+The following sample topologies are not hosted in this repository but may be useful:
+
+- [ciscolive-brkcrt-2059](https://github.com/CiscoLearning/ciscolive-brkcrt-2059) - Lab Up For Success With Cisco Modeling Labs.
+
+## Contributing
+
+If you wish to submit a sample topologies, you can either create a pull request to host it here in this repository, or you can submit a pull request
+for this `README.md` alone that points to your CML use cases hosted elsewhere.
+
+Feel free to contribute new topologies or suggest additional resources!

lab-topologies/aaa-tacacs-exploration/Snack_Minute_AAA_TACACS_Exploration.yaml

@@ -223,6 +223,7 @@ nodes:
             - flex
             - bison
             - libwrap0-dev
+            - libnsl-dev
 
           write_files:
             # Create the tac_plus configuration file

lab-topologies/aaa-tacacs-exploration/aaa-exploration-ios-nxos.yaml

@@ -499,6 +499,7 @@ nodes:
             - bison
             - libwrap0-dev
             - python3.10-venv
+            - libnsl-dev
 
           write_files:
             # Create the tac_plus configuration file

lab-topologies/ccna/Domain_2/2.1-configure_vlans_3/Task-2.1_Configure_and_verify_VLANs_.yaml

@@ -270,11 +270,11 @@ nodes:
     tags: []
     x: 280
     y: -160
-  interfaces:
-      - id: i0
-        label: eth0
-        slot: 0
-        type: physical
+    interfaces:
+        - id: i0
+          label: eth0
+          slot: 0
+          type: physical
   - boot_disk_size: null
     configuration:
       - name: ios_config.txt

lab-topologies/cml-free/hybrid-networking/README.md

@@ -0,0 +1,22 @@
+**Hybrid Networking Topology**
+
+Cisco Modeling Labs - Free allows up to five nodes to run concurrently. 
+
+The **External Connector** (`ext-conn-0`) and the **Unmanaged Switch** (`unmanaged-switch-0`) do not count against the device node limit of five. Besides these two nodes, for your Cisco Modeling Labs network, you have the following five nodes running:
+
+1. `router-1`: an IOL router running Cisco IOS-XE version 17.15.1
+2. `switch-1`: an IOL-L2 switch running Cisco IOS-XE version 17.15.1
+3. `ubuntu-te`: Ubuntu Linux version 24.04.1 LTS (Noble Numbat)
+4. `client-1`: Alpine Linux version 3.20.3
+5. `server-1`: TinyCore Linux version 15.0
+
+![topology](hybrid-networking.png)
+
+
+> **Note:** The provided Cisco Modeling Labs template ([hybrid-network-cml-topology.yaml](hybrid-networking-cml-topology.yaml)) for this tutorial is designed to minimize your setup time. The lab is preconfigured for connectivity between the nodes and the router, which will obtain an IP address via DHCP from your network and serve as the lab's default gateway. Everywhere in the Cisco Modeling Labs network topology where a password is required, the default of "cisco/cisco" has been used.
+
+> **Note:** `server-1` is running TinyCore Linux, where Python 3 can be installed using the `tce-load` command.
+
+```bash
+tce-load -wi python3.9 
+```

lab-topologies/cml-free/hybrid-networking/hybrid-networking-cml-topology.yaml

@@ -0,0 +1,730 @@
+annotations:
+  - border_color: "#00000000"
+    border_style: ""
+    color: "#808080FF"
+    rotation: 0
+    text_bold: false
+    text_content: |-
+      Inside interface:
+      192.168.100.1
+    text_font: monospace
+    text_italic: false
+    text_size: 12
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: -280.0
+    y1: 80.0
+    z_index: 1
+  - border_color: "#00000000"
+    border_style: ""
+    color: "#808080FF"
+    rotation: 0
+    text_bold: false
+    text_content: |-
+      VLAN 1:
+      192.168.100.100
+    text_font: monospace
+    text_italic: false
+    text_size: 12
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: -80.0
+    y1: 80.0
+    z_index: 3
+  - border_color: "#00000000"
+    border_style: ""
+    color: "#808080FF"
+    rotation: 0
+    text_bold: false
+    text_content: 192.168.100.102
+    text_font: monospace
+    text_italic: false
+    text_size: 12
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: 240.0
+    y1: -40.0
+    z_index: 5
+  - border_color: "#00000000"
+    border_style: ""
+    color: "#808080FF"
+    rotation: 0
+    text_bold: false
+    text_content: 192.168.100.103
+    text_font: monospace
+    text_italic: false
+    text_size: 12
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: 240.0
+    y1: 280.0
+    z_index: 6
+  - border_color: "#00000000"
+    border_style: ""
+    color: "#808080FF"
+    rotation: 0
+    text_bold: false
+    text_content: 192.168.100.101
+    text_font: monospace
+    text_italic: false
+    text_size: 12
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: 240.0
+    y1: -240.0
+    z_index: 7
+smart_annotations: []
+nodes:
+  - boot_disk_size: null
+    configuration:
+      - name: default
+        content: System Bridge
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n0
+    image_definition: null
+    label: ext-conn-0
+    node_definition: external_connector
+    parameters: {}
+    ram: null
+    tags: []
+    x: -600
+    y: 0
+    interfaces:
+      - id: i0
+        label: port
+        mac_address: null
+        slot: 0
+        type: physical
+  - boot_disk_size: null
+    configuration: []
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n1
+    image_definition: null
+    label: unmanaged-switch-0
+    node_definition: unmanaged_switch
+    parameters: {}
+    ram: null
+    tags: []
+    x: -440
+    y: 0
+    interfaces:
+      - id: i0
+        label: port0
+        mac_address: null
+        slot: 0
+        type: physical
+      - id: i1
+        label: port1
+        mac_address: null
+        slot: 1
+        type: physical
+      - id: i2
+        label: port2
+        mac_address: null
+        slot: 2
+        type: physical
+      - id: i3
+        label: port3
+        mac_address: null
+        slot: 3
+        type: physical
+      - id: i4
+        label: port4
+        mac_address: null
+        slot: 4
+        type: physical
+      - id: i5
+        label: port5
+        mac_address: null
+        slot: 5
+        type: physical
+      - id: i6
+        label: port6
+        mac_address: null
+        slot: 6
+        type: physical
+      - id: i7
+        label: port7
+        mac_address: null
+        slot: 7
+        type: physical
+  - boot_disk_size: null
+    configuration:
+      - name: ios_config.txt
+        content: |-
+          Building configuration...
+
+          Current configuration : 1084 bytes
+          !
+          ! Last configuration change at 13:47:40 UTC Fri Jun 27 2025
+          !
+          version 17.15
+          service timestamps debug datetime msec
+          service timestamps log datetime msec
+          !
+          hostname router-1
+          !
+          boot-start-marker
+          boot-end-marker
+          !
+          !
+          no logging console
+          no aaa new-model
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          ip domain name cml.local
+          ip cef
+          login on-success log
+          no ipv6 cef
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          memory free low-watermark processor 80093
+          !
+          !
+          spanning-tree mode rapid-pvst
+          !
+          !
+          username cisco privilege 15 password 0 cisco
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          interface Ethernet0/0
+           ip address dhcp
+          !
+          interface Ethernet0/1
+           ip address 192.168.100.1 255.255.255.0
+          !
+          interface Ethernet0/2
+           no ip address
+           shutdown
+          !
+          interface Ethernet0/3
+           no ip address
+           shutdown
+          !
+          ip forward-protocol nd
+          !
+          !
+          ip http server
+          ip http secure-server
+          ip ssh bulk-mode 131072
+          no logging btrace
+          !
+          !
+          !
+          control-plane
+          !
+          !
+          !
+          line con 0
+           exec-timeout 0 0
+           logging synchronous
+          line aux 0
+          line vty 0 4
+           session-timeout 10
+           exec-timeout 0 0
+           login local
+           transport input ssh
+          !
+          !
+          !
+          !
+          interface Ethernet0/0
+           ip nat outside
+          !
+          interface Ethernet0/1
+           ip nat inside
+          !
+          access-list 1 permit 192.168.100.0 0.0.0.255
+          !
+          ip nat inside source list 1 interface Ethernet0/0 overload
+          !
+          end
+    cpu_limit: 60
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n2
+    image_definition: iol-xe-17-15-01
+    label: router-1
+    node_definition: iol-xe
+    parameters: {}
+    ram: null
+    tags: []
+    x: -240
+    y: 0
+    interfaces:
+      - id: i0
+        label: Loopback0
+        mac_address: null
+        type: loopback
+      - id: i1
+        label: Ethernet0/0
+        mac_address: null
+        slot: 0
+        type: physical
+      - id: i2
+        label: Ethernet0/1
+        mac_address: null
+        slot: 1
+        type: physical
+      - id: i3
+        label: Ethernet0/2
+        mac_address: null
+        slot: 2
+        type: physical
+      - id: i4
+        label: Ethernet0/3
+        mac_address: null
+        slot: 3
+        type: physical
+  - boot_disk_size: null
+    configuration:
+      - name: ios_config.txt
+        content: |-
+          Building configuration...
+          Current configuration : 1083 bytes
+          !
+          ! Last configuration change at 13:51:18 UTC Fri Jun 27 2025
+          !
+          version 17.15
+          service timestamps debug datetime msec
+          service timestamps log datetime msec
+          !
+          hostname switch-1
+          !
+          boot-start-marker
+          boot-end-marker
+          !
+          !
+          no logging console
+          no aaa new-model
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          ip audit notify log
+          ip audit po max-events 100
+          ip cef
+          login on-success log
+          no ipv6 cef
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          memory free low-watermark processor 79593
+          !
+          !
+          spanning-tree mode rapid-pvst
+          spanning-tree extend system-id
+          !
+          !
+          vlan internal allocation policy ascending
+          !
+          vlan 1
+           name default
+          !
+          !
+          !
+          !
+          interface Ethernet0/0
+           switchport mode access
+          !
+          interface Ethernet0/1
+           switchport mode access
+          !
+          interface Ethernet0/2
+           switchport mode access
+          !
+          interface Ethernet0/3
+           switchport mode access
+          !
+          interface Vlan1
+           ip address 192.168.100.100 255.255.255.0
+           no shutdown
+          !
+          ip forward-protocol nd
+          !
+          !
+          ip http server
+          ip http secure-server
+          ip ssh bulk-mode 131072
+          !
+          no logging btrace
+          !
+          !
+          !
+          control-plane
+          !
+          !
+          !
+          line con 0
+           exec-timeout 0 0
+           logging synchronous
+          line aux 0
+          line vty 0 4
+           exec-timeout 0 0
+           login
+           transport input ssh
+          !
+          !
+          end
+    cpu_limit: 75
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n3
+    image_definition: ioll2-xe-17-15-01
+    label: switch-1
+    node_definition: ioll2-xe
+    parameters: {}
+    ram: null
+    tags: []
+    x: -40
+    y: 0
+    interfaces:
+      - id: i0
+        label: Loopback0
+        mac_address: null
+        type: loopback
+      - id: i1
+        label: Ethernet0/0
+        mac_address: null
+        slot: 0
+        type: physical
+      - id: i2
+        label: Ethernet0/1
+        mac_address: null
+        slot: 1
+        type: physical
+      - id: i3
+        label: Ethernet0/2
+        mac_address: null
+        slot: 2
+        type: physical
+      - id: i4
+        label: Ethernet0/3
+        mac_address: null
+        slot: 3
+        type: physical
+  - boot_disk_size: 8
+    configuration:
+      - name: iosxe_config.txt
+        content: |-
+          # this is a shell script which will be sourced at boot
+          hostname server-1
+          # configurable user account
+          USERNAME=cisco
+          PASSWORD=cisco
+          # no password for tc user by default
+          TC_PASSWORD=cisco
+
+          # Apply network configuration directly since /opt is read-only during boot
+          # Configure eth0 with static IP
+          ifconfig eth0 192.168.100.101 netmask 255.255.255.0 up
+
+          # Add default route
+          route add default gw 192.168.100.1
+
+          # Set up DNS
+          echo "nameserver 1.1.1.1" > /etc/resolv.conf
+          echo "nameserver 8.8.8.8" >> /etc/resolv.conf
+    cpu_limit: 74
+    cpus: null
+    data_volume: 8
+    hide_links: false
+    id: n4
+    image_definition: server-tcl-15-0
+    label: server-1
+    node_definition: server
+    parameters: {}
+    ram: 1024
+    tags: []
+    x: 320
+    y: -200
+    interfaces:
+      - id: i0
+        label: eth0
+        mac_address: null
+        slot: 0
+        type: physical
+  - boot_disk_size: 4
+    configuration:
+      - name: node.cfg
+        content: |-
+          # This is a shell script which will be sourced at boot
+          hostname client-1
+          # Configure /etc/network/interfaces for static IP
+          cat << EOF > /etc/network/interfaces
+          auto lo
+          iface lo inet loopback
+
+          auto eth0
+          iface eth0 inet static
+              address 192.168.100.102
+              netmask 255.255.255.0
+              gateway 192.168.100.1
+          EOF
+
+          # Configure /etc/resolv.conf for nameservers
+          echo "nameserver 1.1.1.1" > /etc/resolv.conf
+          echo "nameserver 8.8.8.8" >> /etc/resolv.conf
+
+          # Commit changes for persistence across reboots (Alpine specific)
+          lbu commit -d "Initial network configuration"
+
+          # Restart networking service to apply changes
+          rc-service networking restart
+    cpu_limit: 50
+    cpus: 1
+    data_volume: 2
+    hide_links: false
+    id: n5
+    image_definition: alpine-desktop-3-20-3
+    label: client-1
+    node_definition: desktop
+    parameters: {}
+    ram: null
+    tags: []
+    x: 320
+    y: 0
+    interfaces:
+      - id: i0
+        label: eth0
+        mac_address: null
+        slot: 0
+        type: physical
+  - boot_disk_size: 4
+    configuration:
+      - name: user-data
+        content: |-
+          #cloud-config
+          hostname: ubuntu-te
+          manage_etc_hosts: True
+          system_info:
+            default_user:
+              name: cisco
+          password: cisco
+          chpasswd: { expire: False }
+          ssh_pwauth: True
+          ssh_authorized_keys:
+            - your-ssh-pubkey-line-goes-here
+          packages:
+            - python3
+            - python3-pip
+
+          runcmd:
+            - [ sh, -c, 'if [ ! -d /data ]; then mkdir -p /data; fi' ]
+            - [ sh, -c, 'if ! blkid /dev/vdb | grep -q TYPE; then mkfs.ext4 -F /dev/vdb; fi' ]
+            - [ sh, -c, 'if ! grep -q "/dev/vdb" /etc/fstab; then echo "/dev/vdb /data ext4 defaults 0 2" >> /etc/fstab; fi' ]
+            - [ mount, -a ]
+            - [ chown, 'cisco:cisco', '/data' ]
+            - [ chmod, '755', '/data' ]
+            - [ apt-get, update ]
+            - [ apt-get, install, -y, 'ca-certificates', 'curl', 'gnupg', 'lsb-release' ]
+            - [ sh, -c, 'curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg' ]
+            - [ sh, -c, 'echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null' ]
+            - [ apt-get, update ]
+            - [ apt-get, install, -y, 'docker-ce', 'docker-ce-cli', 'containerd.io', 'docker-buildx-plugin', 'docker-compose-plugin' ]
+            - [ mkdir, -p, '/data/docker' ]
+            - [ sh, -c, 'echo "{\"data-root\": \"/data/docker\"}" > /etc/docker/daemon.json' ]
+            - [ systemctl, enable, docker ]
+            - [ systemctl, restart, docker ]
+            - [ usermod, -aG, docker, cisco ]
+            - [ su, -c, 'newgrp docker', cisco ]
+
+          # Optional: Create a welcome message for students
+          write_files:
+            - path: /data/README.txt
+              content: |
+                Welcome to your CML Ubuntu Lab Node!
+                
+                This system has two storage areas:
+                - Root filesystem (/): 4GB for OS and system files
+                - Data volume (/data): 6GB for your projects, files, and Docker containers
+                
+                Docker is pre-installed and configured to use /data for container storage.
+                You can store your lab work in /data to avoid filling up the root filesystem.
+                
+                Useful commands:
+                - df -h                    # Show disk usage
+                - du -sh /data/*           # Show space used in data directory
+                - docker system df         # Show Docker disk usage
+                - docker system prune      # Clean up unused Docker resources
+                
+                Docker usage:
+                - All Docker images and containers are stored in /data/docker
+                - The 'cisco' user can run Docker commands without sudo
+                - Log out and back in after first boot to use Docker
+                
+                Happy learning!
+              owner: cisco:cisco
+              permissions: '0644'
+      - name: network-config
+        content: |-
+          network:
+            version: 2
+            ethernets:
+              ens2:
+                dhcp4: false
+                addresses:
+                  - 192.168.100.103/24
+                gateway4: 192.168.100.1
+                nameservers:
+                  addresses:
+                    - 1.1.1.1
+                    - 8.8.8.8
+    cpu_limit: 90
+    cpus: null
+    data_volume: 6
+    hide_links: false
+    id: n6
+    image_definition: null
+    label: ubuntu-te
+    node_definition: ubuntu
+    parameters: {}
+    ram: null
+    tags: []
+    x: 320
+    y: 200
+    interfaces:
+      - id: i0
+        label: ens2
+        mac_address: null
+        slot: 0
+        type: physical
+      - id: i1
+        label: ens3
+        mac_address: null
+        slot: 1
+        type: physical
+      - id: i2
+        label: ens4
+        mac_address: null
+        slot: 2
+        type: physical
+      - id: i3
+        label: ens5
+        mac_address: null
+        slot: 3
+        type: physical
+      - id: i4
+        label: ens6
+        mac_address: null
+        slot: 4
+        type: physical
+links:
+  - id: l0
+    n1: n0
+    n2: n1
+    i1: i0
+    i2: i0
+    conditioning: {}
+    label: ext-conn-0-port<->unmanaged-switch-0-port0
+  - id: l1
+    n1: n2
+    n2: n1
+    i1: i1
+    i2: i1
+    conditioning: {}
+    label: router-1-Ethernet0/0<->unmanaged-switch-0-port1
+  - id: l2
+    n1: n3
+    n2: n2
+    i1: i1
+    i2: i2
+    conditioning: {}
+    label: switch-1-Ethernet0/0<->router-1-Ethernet0/1
+  - id: l3
+    n1: n4
+    n2: n3
+    i1: i0
+    i2: i2
+    conditioning: {}
+    label: server-1-eth0<->switch-1-Ethernet0/1
+  - id: l4
+    n1: n5
+    n2: n3
+    i1: i0
+    i2: i3
+    conditioning: {}
+    label: client-1-eth0<->switch-1-Ethernet0/2
+  - id: l5
+    n1: n6
+    n2: n3
+    i1: i0
+    i2: i4
+    conditioning: {}
+    label: ubuntu-te-ens2<->switch-1-Ethernet0/3
+lab:
+  description: ""
+  notes: ""
+  title: ThousandEyes_Splunk
+  version: 0.3.0

node-definitions/juniper/vJunos-Router/README.MD

@@ -9,3 +9,5 @@ Image can be downloaded from https://support.juniper.net/support/downloads/?p=vj
 Minimum CML version 2.8.0
 
 Tested with vJUNOS ROUTER image version 23.2
+
+For CML deployed in ESXI, `Performance Counters` should be enabled in CPU section of CML VM Edit settings. Without it the vJUNOS may not boot. 

node-definitions/juniper/vJunos-Switch/README.MD

@@ -9,3 +9,5 @@ Image can be downloaded from https://support.juniper.net/support/downloads/?p=vj
 Minimum CML version 2.8.
 
 Tested with vJUNOS SWITCH image version 23.2
+
+For CML deployed in ESXI, `Performance Counters` should be enabled in CPU section of CML VM Edit settings. Without it the vJUNOS may not boot.

node-definitions/opensource/code-server-custom-4.102/Example_-_Code_Server_Custom.yaml

@@ -0,0 +1,429 @@
+annotations:
+  - border_color: '#00000000'
+    border_style: ''
+    color: '#050505'
+    rotation: 0
+    text_bold: false
+    text_content: |-
+      Code Server Addresses:
+        - From Chrome Node: http://10.0.0.11:8443
+        - PATty Configured: http://{CML IP}:7001
+          (requires PATty enabled on CML server)
+    text_font: monospace
+    text_italic: false
+    text_size: 10
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: 40.0
+    y1: -280.0
+    z_index: 0
+  - border_color: '#00000000'
+    border_style: ''
+    color: '#050505'
+    rotation: 0
+    text_bold: false
+    text_content: |-
+      Code Server Addresses:
+        - From Chrome Node: http://10.0.0.11:8443
+        - PATty Configured: http://{CML IP}:7001
+          (requires PATty enabled on CML server)
+    text_font: monospace
+    text_italic: false
+    text_size: 10
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: -240.0
+    y1: 0.0
+    z_index: 0
+  - border_color: '#00000000'
+    border_style: ''
+    color: '#050505'
+    rotation: 0
+    text_bold: false
+    text_content: |-
+      Code Server Addresses:
+        - From Chrome Node: http://10.0.0.11:8443
+        - PATty Configured: http://{CML IP}:7001
+          (requires PATty enabled on CML server)
+    text_font: monospace
+    text_italic: false
+    text_size: 10
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: -240.0
+    y1: 0.0
+    z_index: 0
+  - border_color: '#00000000'
+    border_style: ''
+    color: '#050505'
+    rotation: 0
+    text_bold: false
+    text_content: 'ip: 10.0.0.1'
+    text_font: monospace
+    text_italic: false
+    text_size: 10
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: -120.0
+    y1: -320.0
+    z_index: 0
+  - border_color: '#00000000'
+    border_style: ''
+    color: '#000000'
+    rotation: 0
+    text_bold: true
+    text_content: 'Example: Using Code Server For Network Automation Testing'
+    text_font: monospace
+    text_italic: false
+    text_size: 12
+    text_unit: pt
+    thickness: 1
+    type: text
+    x1: -280.0
+    y1: -400.0
+    z_index: 1
+smart_annotations:
+  - tag: pat:tcp:7001:8443
+    is_on: true
+    padding: 35
+    label: pat:tcp:7001:8443
+    tag_offset_x: 0
+    tag_offset_y: 0
+    tag_size: 14
+    group_distance: 400
+    thickness: 1
+    border_style: ''
+    fill_color: '#005C9980'
+    border_color: '#00000080'
+    z_index: 1
+nodes:
+  - boot_disk_size: null
+    configuration: []
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n0
+    image_definition: null
+    label: internet
+    node_definition: external_connector
+    parameters: {}
+    ram: null
+    tags: []
+    x: -240
+    y: -280
+    interfaces:
+      - id: i0
+        label: port
+        mac_address: null
+        type: physical
+        slot: 0
+  - boot_disk_size: null
+    configuration:
+      - name: boot.sh
+        content: |-
+          # The following commands will run at boot.
+          # Note: Suggested that eth0 be connected to ext-conn for
+          #       internet access to reach locations such as GitHub
+          #       and PyPi. Leave eth0 gaining IP from DHCP. Add
+          #       second interface (eth1) for reachability to
+          #       "lab networks"
+
+          # Examples :
+          #  - Static IP address, routes, and DNS server
+          ip address add dev eth1 10.0.0.11/24
+          ip route add 10.0.0.0/16 via 10.0.0.1
+          ip link set dev eth1 up
+          # echo "nameserver 192.168.10.11" >> /etc/resolv.conf
+
+          #  - Clone something from Source Control
+          # If the container is getting its IP via DHCP, uncomment
+          # this sleep to ensure the DHCP process completes before
+          # attempting to clone the repo
+          sleep 10
+          #    Recommend placing code in the /app/code directory for default workspace
+          cd /app/code
+          #    Do the clone as the user "abc", which is the code-server user
+          sudo -u abc git clone https://github.com/hpreston/net-hello-world.git
+          #    Install Python requirements file into the container virtual environment
+          sudo -u abc /app/code/.venv/bin/python -m pip install -r net-hello-world/requirements.txt
+
+          # End the script cleanly
+          exit 0
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n1
+    image_definition: null
+    label: codeserver-0
+    node_definition: code-server-custom-4.102
+    parameters: {}
+    ram: null
+    tags:
+      - pat:tcp:7001:8443
+    x: -240
+    y: -120
+    interfaces:
+      - id: i0
+        label: eth0
+        mac_address: null
+        type: physical
+        slot: 0
+      - id: i1
+        label: eth1
+        mac_address: null
+        type: physical
+        slot: 1
+  - boot_disk_size: null
+    configuration:
+      - name: ios_config.txt
+        content: |-
+          hostname router01
+          ip domain name net.internal
+          ip domain list net.internal
+          !
+          ! EEM Applet to add SSH Key Automatically
+          event manager applet do-ssh authorization bypass
+           event timer cron cron-entry "@reboot" maxrun 130
+          action 01 wait 10
+          action 02 cli command "enable"
+          action 11 cli command "crypto key generate rsa modulus 2048"
+          action 20 cli command "config t"
+          action 21 cli command "no event manager applet do-ssh"
+          action 22 cli command "end"
+          action 23 cli command "write mem"
+          !
+          enable secret cisco
+          username cisco privilege 15 secret cisco
+          !
+          line vty 0 4
+           transport input ssh
+           login local
+           exit
+          !
+          !
+          ! In order to avoid entering a configuration dialog on boot, please
+          ! ensure that all interfaces have some IP configuration present here
+          ! such as the example below:
+          !
+          interface range Ethernet0/0-3
+           no ip address
+           shutdown
+          !
+          interface Serial1/0
+           no ip address
+           shutdown
+          !
+          interface Serial1/1
+           no ip address
+           shutdown
+          !
+          interface Serial1/2
+           no ip address
+           shutdown
+          !
+          interface Serial1/3
+           no ip address
+           shutdown
+          !
+          interface Ethernet0/0
+           no shut
+           ip address 10.0.0.1 255.255.255.0
+          !
+          end
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n2
+    image_definition: null
+    label: router01
+    node_definition: iol-xe-serial-4eth
+    parameters: {}
+    ram: null
+    tags: []
+    x: -80
+    y: -280
+    interfaces:
+      - id: i0
+        label: Loopback0
+        mac_address: null
+        type: loopback
+      - id: i1
+        label: Ethernet0/0
+        mac_address: null
+        type: physical
+        slot: 0
+      - id: i2
+        label: Ethernet0/1
+        mac_address: null
+        type: physical
+        slot: 1
+      - id: i3
+        label: Ethernet0/2
+        mac_address: null
+        type: physical
+        slot: 2
+      - id: i4
+        label: Ethernet0/3
+        mac_address: null
+        type: physical
+        slot: 3
+      - id: i5
+        label: Serial1/0
+        mac_address: null
+        type: physical
+        slot: 4
+      - id: i6
+        label: Serial1/1
+        mac_address: null
+        type: physical
+        slot: 5
+      - id: i7
+        label: Serial1/2
+        mac_address: null
+        type: physical
+        slot: 6
+      - id: i8
+        label: Serial1/3
+        mac_address: null
+        type: physical
+        slot: 7
+  - boot_disk_size: null
+    configuration:
+      - name: boot.sh
+        content: |-
+          # insert commands here, e.g. a static IP address
+          ip address add dev eth0 10.0.0.12/24
+          ip link set dev eth0 up
+          exit 0
+      - name: environment
+        content: |-
+          # NOTE 2025-08-01:
+          #  The current (CML 2.9.0) Chrome and Firefox containers
+          #  do NOT support setting the HOME_URL for code-server due
+          #  to code-server returning a 405 error to HEAD requests
+          #  A future CML node update will enable more flexible checks
+          #  to enable using HOME_URL for code-server
+
+          # -- These are understood by the start script
+          # -- Homepage to open at start (needs network!)
+          # HOME_URL=https://www.cisco.com/go/cml
+          # -- Wait additional time for network before starting Chrome
+          # WAIT=2
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n3
+    image_definition: null
+    label: chrome-0
+    node_definition: chrome
+    parameters: {}
+    ram: null
+    tags: []
+    x: 80
+    y: -120
+    interfaces:
+      - id: i0
+        label: eth0
+        mac_address: null
+        type: physical
+        slot: 0
+  - boot_disk_size: null
+    configuration: []
+    cpu_limit: null
+    cpus: null
+    data_volume: null
+    hide_links: false
+    id: n4
+    image_definition: null
+    label: switch
+    node_definition: unmanaged_switch
+    parameters: {}
+    ram: null
+    tags: []
+    x: -80
+    y: -120
+    interfaces:
+      - id: i0
+        label: port0
+        mac_address: null
+        type: physical
+        slot: 0
+      - id: i1
+        label: port1
+        mac_address: null
+        type: physical
+        slot: 1
+      - id: i2
+        label: port2
+        mac_address: null
+        type: physical
+        slot: 2
+      - id: i3
+        label: port3
+        mac_address: null
+        type: physical
+        slot: 3
+      - id: i4
+        label: port4
+        mac_address: null
+        type: physical
+        slot: 4
+      - id: i5
+        label: port5
+        mac_address: null
+        type: physical
+        slot: 5
+      - id: i6
+        label: port6
+        mac_address: null
+        type: physical
+        slot: 6
+      - id: i7
+        label: port7
+        mac_address: null
+        type: physical
+        slot: 7
+links:
+  - id: l0
+    n1: n1
+    n2: n0
+    i1: i0
+    i2: i0
+    conditioning: {}
+    label: codeserver-0-eth0<->internet-port
+  - id: l1
+    n1: n1
+    n2: n4
+    i1: i1
+    i2: i0
+    conditioning: {}
+    label: codeserver-0-eth1<->unmanaged-switch-0-port0
+  - id: l2
+    n1: n4
+    n2: n2
+    i1: i1
+    i2: i1
+    conditioning: {}
+    label: unmanaged-switch-0-port1<->router01-Ethernet0/0
+  - id: l3
+    n1: n3
+    n2: n4
+    i1: i0
+    i2: i2
+    conditioning: {}
+    label: chrome-0-eth0<->unmanaged-switch-0-port2
+lab:
+  description: 'This is an example topology that shows how the Code Server Custom
+    Node can be used in a topology to provide a developer experience for Network Automation
+    use cases.  '
+  notes: ''
+  title: Example - Code Server Custom
+  version: 0.3.0

node-definitions/opensource/code-server-custom-4.102/README.md

@@ -0,0 +1,77 @@
+# Code Server Custom
+Looking to easily add a network automation workspace to your CML topologies? Well this node definition is for you.  
+
+![](cml-code-server-01.png)
+
+Built from the [Linux Servers Container Image for "Code Server"](https://hub.docker.com/r/linuxserver/code-server), this node provides a web based VS Code interface that can be added into your CML topologies like any other node.
+
+You can then use a Chrome/Firefox container within the topology to begin your automation work. Or setup a PATty connection, and directly access the Code Server from your local workstation.
+
+## Node Details
+
+* Requires CML version 2.9+
+* Code Server Version 4.102.2 used 
+* Automation Tools Included: 
+    * Python 3.12.3
+    * Terraform v1.12.2
+* Default Workspace Configured: 
+    * Path: `/app/code`
+    * Python VENV: `/app/code/.venv` (No Packages Installed)
+* Requires matching image definition and container image
+    * Image Definition File: [`code-server.custom.01.4.102.yaml`](../../../virl-base-images/opensource/code-server.custom.01.4.102/code-server.custom.01.4.102.yaml).
+    * Container Image: [`code-server-custom.01.4.102.tar`](https://cml-images.nerdops.io/code-server-custom.01.4.102.tar.gz)
+
+        > Note: CML container node definition, image definition, and container image file are tightly coupled. The image "name" (ex: `code-server-custom:01_04.102.2`), and the SHA Hash (ex: `6525a3a31...`) must match exactly. Changing to a different container image with your own customizations, will require updating the node and image definitions.
+
+        * Container SHA value: `6525a3a31b1b18cf01f64425e96b080aeac86f87c0f02fc041792358bc599dd1` (Required for Image Definition Creation)
+
+## Adding the node to your CML instance
+
+> Container support was added in CML 2.9.0.
+
+> Adding a container image to CML is slightly different than adding a typical VM based node. As with many things in the world, there are multiple ways to accomplish the same task. These instructions present one method, but feel free to adjust for your own environment and preferences as you see fit.
+
+1. Import the node definition file to CML from the CML GUI.
+2. Download the container image file to your local workstation. 
+
+    ```
+    # Example: 
+    wget https://cml-images.nerdops.io/code-server-custom.01.4.102.tar.gz
+
+    Saving to: ‘code-server-custom.01.4.102.tar.gz’
+
+    code-server-custom.01.4.102.tar.gz    100%[=======>] 666.61M  47.1MB/s    in 14s     
+
+    2025-08-01 16:17:27 (47.9 MB/s) - ‘code-server-custom.01.4.102.tar.gz’ saved [698992808/698992808]    
+    ```
+
+1. Upload the container image to the CML server. Here I use SCP to do the upload.
+
+    ```
+    scp code-server-custom.01.4.102.tar.gz admin@{CML_SERVER_ADDRESS}:
+
+    code-server-custom.01.4.102.tar.gz       100%  667MB 315.1MB/s   00:02    
+    ```
+
+1. If the container image is compressed into a `.tar.gz` file like this example, you'll need to uncompress it into just a `.tar` file to continue. You can do this before you upload it to CML, but you can also do it on the CML server after the upload as the `sysadmin` account.  
+
+    ```
+    sudo -u virl2 gunzip /var/local/virl2/dropfolder/code-server-custom.01.4.102.tar.gz
+    ```
+
+    * Access the `sysadmin` terminal through the Cockpit interface, or by SSHing to the CML server (if enabled) on port 1122 
+    * Use `sudo -u virl2` to run the unzip as the CML service account
+
+1. Create the Image Definition using the CML GUI. Be sure to select the correct Node and Disk Image. You'll need to provide ID, Label, Description, and Disk Hash (SHA value).
+
+    > There isn't an "Import" ability for Image Definitions, but you can use the details from the [image definition file here](../../../virl-base-images/opensource/code-server.custom.01.4.102/code-server.custom.01.4.102.yaml) in the CML Community to fill in the blanks. 
+
+## Testing the Node Definition
+
+If you'd like to test the new node definition, a simple CML topology file is included in this repo: [Example - Code Server Custom](Example_-_Code_Server_Custom.yaml)
+
+![](example-cml-topology-01.png)
+
+This example includes the Code Server node with a configuraiton that automatically will clone down [https://github.com/hpreston/net-hello-world](https://github.com/hpreston/net-hello-world#) and install the Python requirements from the project automatically. There is also an IOL router, that the [`hello_world.py`](https://github.com/hpreston/net-hello-world/blob/main/hello_world.py) will use pyATS to query and print the device version. 
+
+You can access the Code-Server using the Chrome node in the topology by navigating to the code-server address of `http://10.0.0.11:8443`.  If your CML server is configured for PATty, you can also access the code-server at `http://{CML_IP}:7001`.

node-definitions/opensource/code-server-custom-4.102/code-server-custom-4.102.yaml

@@ -0,0 +1,125 @@
+id: code-server-custom-4.102
+boot:
+  timeout: 30
+  completed:
+    - READY
+  uses_regex: false
+sim:
+  linux_native:
+    libvirt_domain_driver: docker
+    driver: ubuntu
+    ram: 4096
+    cpus: 1
+    cpu_limit: 100
+    video:
+      memory: 1
+general:
+  nature: host
+  description: Code-Server Customized 4.102.2 (Docker)
+  read_only: false
+configuration:
+  generator:
+    driver: null
+  provisioning:
+    files:
+      - editable: false
+        name: config.json
+        content: |-
+          {
+            "docker": {
+              "image": "code-server-custom:01_04.102.2",
+              "mounts": [
+                "type=bind,source=cfg/boot.sh,target=/boot.sh"
+              ],
+              "misc_args": [
+                "--security-opt","seccomp=unconfined"
+              ],
+              "env": [
+                "DOCKER_MODS=code-server-python3|linuxserver/mods:code-server-terraform",
+                "TZ=Etc/UTC",
+                "DEFAULT_WORKSPACE=/app/code/code.code-workspace"
+              ]
+            },
+            "shell": "/bin/sh",
+            "day0cmd": [ "/bin/sh", "/boot.sh" ],
+            "busybox": true
+          }
+      - editable: true
+        name: boot.sh
+        content: |-
+          # The following commands will run at boot.
+          # Note: Suggested that eth0 be connected to ext-conn for
+          #       internet access to reach locations such as GitHub
+          #       and PyPi. Leave eth0 gaining IP from DHCP. Add
+          #       second interface (eth1) for reachability to
+          #       "lab networks"
+
+          # Examples :
+          #  - Static IP address, routes, and DNS server
+          # ip address add dev eth1 192.168.10.11/24
+          # ip route add 192.168.11.0/24 via 192.168.10.1
+          # ip link set dev eth1 up
+          # echo "nameserver 192.168.10.11" >> /etc/resolv.conf
+
+          #  - Clone something from Source Control
+          # If the container is getting its IP via DHCP, uncomment
+          # this sleep to ensure the DHCP process completes before
+          # attempting to clone the repo
+          # sleep 10
+          #    Recommend placing code in the /app/code directory for default workspace
+          # cd /app/code
+          #    Do the clone as the user "abc", which is the code-server user
+          # sudo -u abc git clone {REPO_ADDRESS}
+          #    Install Python requirements file into the container virtual environment
+          #     Note: Depending on internet speed and number of requirements, the
+          #              installation can take significant time to complete.
+          # sudo -u abc /app/code/.venv/bin/python -m pip install -r {PROJECT_FOLDER}/requirements.txt
+
+          # End the script cleanly
+          exit 0
+      - editable: true
+        name: environment
+        content: |-
+          # Create any additional Environment Variables for the Server
+          # Example:
+          # ROUTER_ADDRESS=10.0.0.1
+    media_type: raw
+    volume_name: cfg
+device:
+  interfaces:
+    serial_ports: 2
+    physical:
+      - eth0
+      - eth1
+      - eth2
+      - eth3
+    has_loopback_zero: false
+    default_count: 1
+ui:
+  label_prefix: codeserver-
+  icon: host
+  label: Code-Server (Python/Terraform)
+  visible: true
+  group: Others
+  description: |-
+    Code Server 4.102.2 (Docker) Based on linuxserver/code-server
+
+    * Python and Terraform Installed
+    * Code workspace created at `/app/code`
+    * Workspace Python venv: `/app/code/.venv`
+    * Access Code Server at: http://{CONTAINER_IP}:8443
+      * PATty support: `pat:tcp:{PATty Port}:8443`
+inherited:
+  image:
+    ram: true
+    cpus: false
+    data_volume: false
+    boot_disk_size: false
+    cpu_limit: false
+  node:
+    ram: true
+    cpus: false
+    data_volume: false
+    boot_disk_size: false
+    cpu_limit: false
+schema_version: 0.0.1

virl-base-images/opensource/code-server.custom.01.4.102/code-server.custom.01.4.102.yaml

@@ -0,0 +1,31 @@
+id: code-server.custom.01.4.102
+node_definition_id: code-server-custom-4.102
+description: |-
+  Code Server (4.102) from https://hub.docker.com/r/linuxserver/code-server
+
+  Reachable at: http://{IP_ADDRESS}:8443
+
+  Customizations:
+
+  * DOCKER_MODS=linuxserver/mods:code-server-python3|linuxserver/mods:code-server-terraform"
+  * VS Code Extensions
+
+      ```
+      code-server --install-extension dotjoshjohnson.xml
+      code-server --install-extension ms-python.black-formatter
+      code-server --install-extension ms-python.debugpy
+      code-server --install-extension ms-python.flake8
+      code-server --install-extension ms-python.python
+      code-server --install-extension redhat.ansible
+      code-server --install-extension redhat.vscode-yaml
+      code-server --install-extension samuelcolvin.jinjahtml
+      code-server --install-extension hashicorp.terraform
+      code-server --install-extension ms-toolsai.jupyter
+      ```
+
+  * Workspace for /app/code created
+label: Code Server Custom
+disk_image: code-server-custom.01.4.102.tar
+read_only: false
+schema_version: 0.0.1
+sha256: 6525a3a31b1b18cf01f64425e96b080aeac86f87c0f02fc041792358bc599dd1