Damien/arista-evpn-vxlan-clab
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Hybrid approach: ifupdown for bond0, ip commands for VLAN interfaces

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Interface files handle bond0 creation with LACP via ifupdown-ng.
VLAN sub-interfaces created via ip link commands in exec due to
ifupdown-ng limitations with VLAN interfaces on bonds.

This combines the best of both approaches:
- Persistent bond configuration in /etc/network/interfaces
- Reliable VLAN interface creation via ip commands
This commit is contained in:
Damien Arnodo
2025-11-29 18:48:29 +00:00
parent 15158c2bb1
commit 428ce8e80f
1 changed files with 16 additions and 5 deletions
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21
evpn-lab.clab.yml
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@@ -67,7 +67,6 @@ 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
@@ -75,14 +74,17 @@ topology:
binds:
- hosts/host1_interfaces:/etc/network/interfaces
exec:
# Install required packages for bonding and VLAN support
# Install required packages
- apk add --no-cache ifupdown bonding vlan
# Load bonding kernel module
# Load kernel modules
- modprobe bonding
# Load 8021q module for VLAN support
- modprobe 8021q
# Bring up interfaces using the mounted configuration
# 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
@@ -95,6 +97,9 @@ topology:
- 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
@@ -107,6 +112,9 @@ topology:
- 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
@@ -119,6 +127,9 @@ topology:
- 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)