Damien/arista-evpn-vxlan-clab
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Update topology to use binds for host interface configuration

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Replace exec commands with binds mounting /etc/network/interfaces files.
This provides cleaner, more maintainable configuration that properly
handles LACP bonding and VLAN tagging on Alpine Linux hosts.

All hosts now:
- Mount their interface config from hosts/ directory
- Install required packages (ifupdown, bonding, vlan)
- Load kernel modules (bonding, 8021q)
- Bring up interfaces with ifup -a
This commit is contained in:
Damien Arnodo
2025-11-29 17:24:54 +00:00
parent 3eedb0786c
commit 383a631d92
1 changed files with 29 additions and 59 deletions
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88
evpn-lab.clab.yml
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@@ -67,88 +67,58 @@ topology:
startup-config: configs/leaf8.cfg
# Host devices - DUAL-HOMED with LACP bonding to MLAG pairs
# Using binds to mount interface configuration files
host1:
kind: linux
mgmt-ipv4: 172.16.0.101
image: alpine:latest
binds:
- hosts/host1_interfaces:/etc/network/interfaces
exec:
# Dual-homed LACP bond to leaf1 + leaf2 for L2 VXLAN test (VLAN 40)
# Using mode 4 (802.3ad) explicitly for Alpine Linux compatibility
- ip link add bond0 type bond mode 4
- ip link set address 00:c1:ab:00:00:11 dev bond0
- ip link set eth1 down
- ip link set eth2 down
- ip link set eth1 master bond0
- ip link set eth2 master bond0
- ip link set eth1 up
- ip link set eth2 up
- ip link set bond0 up
# VLAN interface on bond
- 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
# Install required packages for bonding and VLAN support
- apk add --no-cache ifupdown bonding vlan
# Load bonding kernel module
- modprobe bonding
# Load 8021q module for VLAN support
- modprobe 8021q
# Bring up interfaces using the mounted configuration
- ifup -a
host2:
kind: linux
mgmt-ipv4: 172.16.0.102
image: alpine:latest
binds:
- hosts/host2_interfaces:/etc/network/interfaces
exec:
# Dual-homed LACP bond to leaf3 + leaf4 for L3 VXLAN test (VLAN 34, VRF gold)
- ip link add bond0 type bond mode 4
- ip link set address 00:c1:ab:00:00:22 dev bond0
- ip link set eth1 down
- ip link set eth2 down
- ip link set eth1 master bond0
- ip link set eth2 master bond0
- ip link set eth1 up
- ip link set eth2 up
- ip link set bond0 up
# VLAN interface on bond
- 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
- ip route add default via 10.34.34.1
- apk add --no-cache ifupdown bonding vlan
- modprobe bonding
- modprobe 8021q
- ifup -a
host3:
kind: linux
mgmt-ipv4: 172.16.0.103
image: alpine:latest
binds:
- hosts/host3_interfaces:/etc/network/interfaces
exec:
# Dual-homed LACP bond to leaf5 + leaf6 for L2 VXLAN test (VLAN 40)
- ip link add bond0 type bond mode 4
- ip link set address 00:c1:ab:00:00:33 dev bond0
- ip link set eth1 down
- ip link set eth2 down
- ip link set eth1 master bond0
- ip link set eth2 master bond0
- ip link set eth1 up
- ip link set eth2 up
- ip link set bond0 up
# VLAN interface on bond
- 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
- apk add --no-cache ifupdown bonding vlan
- modprobe bonding
- modprobe 8021q
- ifup -a
host4:
kind: linux
mgmt-ipv4: 172.16.0.104
image: alpine:latest
binds:
- hosts/host4_interfaces:/etc/network/interfaces
exec:
# Dual-homed LACP bond to leaf7 + leaf8 for L3 VXLAN test (VLAN 78, VRF gold)
- ip link add bond0 type bond mode 4
- ip link set address 00:c1:ab:00:00:44 dev bond0
- ip link set eth1 down
- ip link set eth2 down
- ip link set eth1 master bond0
- ip link set eth2 master bond0
- ip link set eth1 up
- ip link set eth2 up
- ip link set bond0 up
# VLAN interface on bond
- 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
- ip route add default via 10.78.78.1
- apk add --no-cache ifupdown bonding vlan
- modprobe bonding
- modprobe 8021q
- ifup -a
links:
# Spine1 to Leaf connections (underlay fabric)