lab1.clab.yaml

# Define the containerlab topology named "basic"
name: lab1
prefix: ""

# Define default settings for nodes in the topology
topology:
  # Specify the default kind
  defaults:
    kind: linux

  # Specify the defaults for each kind
  kinds:
    nokia_srlinux:
      type: ixrd1
      image: ghcr.io/nokia/srlinux:23.10.1
    linux:
      image: akpinar/alpine:latest
      group: server

  # Define individual nodes in the topology
  nodes:
    # Routers
    router1:
      kind: nokia_srlinux
      mgmt-ipv4: 172.20.20.11  # Management IPv4 address for s1
    router2:
      kind: nokia_srlinux
      mgmt-ipv4: 172.20.20.12
    router3:
      kind: nokia_srlinux
      mgmt-ipv4: 172.20.20.13

    # Servers
    host1:
      exec:
        - ip addr add 192.168.1.11/24 dev eth1
        - ip route replace default via 192.168.1.1 dev eth1
    host2:
      exec:
        - ip addr add 192.168.2.11/24 dev eth1
        - ip route replace default via 192.168.2.1 dev eth1
    host3:
      exec:
        - ip addr add 192.168.3.11/24 dev eth1
        - ip route replace default via 192.168.3.1 dev eth1

  # Define links between nodes
  links:
    # Router to router links
    - endpoints: ["router1:e1-11", "router2:e1-12"]
    - endpoints: ["router2:e1-11", "router3:e1-12"]
    - endpoints: ["router3:e1-11", "router1:e1-12"]

    # Router to host links
    - endpoints: ["router1:e1-21", "host1:eth1"]
    - endpoints: ["router2:e1-21", "host2:eth1"]
    - endpoints: ["router3:e1-21", "host3:eth1"]

# Define management subnet information
mgmt:
  ipv4-subnet: 172.20.20.0/24