arista-evpn-vxlan-clab/evpn-lab.clab.yml

name: arista-evpn-fabric

mgmt:
    network: evpn-mgmt
    ipv4-subnet: 172.16.0.0/24
    ipv4-gw: 172.16.0.254

topology:
    kinds:
        arista_ceos:
            image: ceos:4.35.0F

    nodes:
        # Spine Switches
        spine1:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.1
            startup-config: configs/spine1.cfg

        spine2:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.2
            startup-config: configs/spine2.cfg

        # Leaf Switches - VTEP1 (AS 65001)
        leaf1:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.25
            startup-config: configs/leaf1.cfg

        leaf2:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.50
            startup-config: configs/leaf2.cfg

        # Leaf Switches - VTEP2 (AS 65002)
        leaf3:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.27
            startup-config: configs/leaf3.cfg

        leaf4:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.28
            startup-config: configs/leaf4.cfg

        # Leaf Switches - VTEP3 (AS 65003)
        leaf5:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.29
            startup-config: configs/leaf5.cfg

        leaf6:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.30
            startup-config: configs/leaf6.cfg

        # Leaf Switches - VTEP4 (AS 65004)
        leaf7:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.31
            startup-config: configs/leaf7.cfg

        leaf8:
            kind: arista_ceos
            mgmt-ipv4: 172.16.0.32
            startup-config: configs/leaf8.cfg

        # Host devices - DUAL-HOMED with LACP bonding to MLAG pairs
        host1:
            kind: linux
            mgmt-ipv4: 172.16.0.101
            image: alpine:latest
            binds:
                - hosts/host1_interfaces:/etc/network/interfaces
            exec:
                # Install required packages
                - apk add --no-cache ifupdown bonding vlan
                # Load kernel modules
                - modprobe bonding
                - modprobe 8021q
                # Bring up bond0 via ifupdown
                - ifup -a
                # Create VLAN interface manually (ifupdown-ng limitation)
                - ip link add link bond0 name bond0.40 type vlan id 40
                - ip link set bond0.40 up
                - ip addr add 10.40.40.101/24 dev bond0.40

        host2:
            kind: linux
            mgmt-ipv4: 172.16.0.102
            image: alpine:latest
            binds:
                - hosts/host2_interfaces:/etc/network/interfaces
            exec:
                - apk add --no-cache ifupdown
                - apk add --no-cache vlan
                - apk add --no-cache bonding
                - modprobe bonding
                - modprobe 8021q
                - ifup -a
                - ip link add link bond0 name bond0.34 type vlan id 34
                - ip link set bond0.34 up
                - ip addr add 10.34.34.102/24 dev bond0.34

        host3:
            kind: linux
            mgmt-ipv4: 172.16.0.103
            image: alpine:latest
            binds:
                - hosts/host3_interfaces:/etc/network/interfaces
            exec:
                - apk add --no-cache ifupdown bonding vlan
                - modprobe bonding
                - modprobe 8021q
                - ifup -a
                - ip link add link bond0 name bond0.40 type vlan id 40
                - ip link set bond0.40 up
                - ip addr add 10.40.40.103/24 dev bond0.40

        host4:
            kind: linux
            mgmt-ipv4: 172.16.0.104
            image: alpine:latest
            binds:
                - hosts/host4_interfaces:/etc/network/interfaces
            exec:
                - apk add --no-cache ifupdown bonding vlan
                - modprobe bonding
                - modprobe 8021q
                - ifup -a
                - ip link add link bond0 name bond0.78 type vlan id 78
                - ip link set bond0.78 up
                - ip addr add 10.78.78.104/24 dev bond0.78

    links:
        # Spine1 to Leaf connections (underlay fabric)
        - endpoints: ["spine1:eth1", "leaf1:eth11"]
        - endpoints: ["spine1:eth2", "leaf2:eth11"]
        - endpoints: ["spine1:eth3", "leaf3:eth11"]
        - endpoints: ["spine1:eth4", "leaf4:eth11"]
        - endpoints: ["spine1:eth5", "leaf5:eth11"]
        - endpoints: ["spine1:eth6", "leaf6:eth11"]
        - endpoints: ["spine1:eth7", "leaf7:eth11"]
        - endpoints: ["spine1:eth8", "leaf8:eth11"]

        # Spine2 to Leaf connections (underlay fabric)
        - endpoints: ["spine2:eth1", "leaf1:eth12"]
        - endpoints: ["spine2:eth2", "leaf2:eth12"]
        - endpoints: ["spine2:eth3", "leaf3:eth12"]
        - endpoints: ["spine2:eth4", "leaf4:eth12"]
        - endpoints: ["spine2:eth5", "leaf5:eth12"]
        - endpoints: ["spine2:eth6", "leaf6:eth12"]
        - endpoints: ["spine2:eth7", "leaf7:eth12"]
        - endpoints: ["spine2:eth8", "leaf8:eth12"]

        # MLAG Peer Links (leaf pairs)
        - endpoints: ["leaf1:eth10", "leaf2:eth10"]
        - endpoints: ["leaf3:eth10", "leaf4:eth10"]
        - endpoints: ["leaf5:eth10", "leaf6:eth10"]
        - endpoints: ["leaf7:eth10", "leaf8:eth10"]

        # Host connections - DUAL-HOMED with LACP to MLAG pairs
        # host1 dual-homed to leaf1 + leaf2
        - endpoints: ["leaf1:eth1", "host1:eth1"]
        - endpoints: ["leaf2:eth1", "host1:eth2"]

        # host2 dual-homed to leaf3 + leaf4
        - endpoints: ["leaf3:eth1", "host2:eth1"]
        - endpoints: ["leaf4:eth1", "host2:eth2"]

        # host3 dual-homed to leaf5 + leaf6
        - endpoints: ["leaf5:eth1", "host3:eth1"]
        - endpoints: ["leaf6:eth1", "host3:eth2"]

        # host4 dual-homed to leaf7 + leaf8
        - endpoints: ["leaf7:eth1", "host4:eth1"]
        - endpoints: ["leaf8:eth1", "host4:eth2"]