Files
arista-evpn-vxlan-clab/hosts
Damien Arnodo db54e56b41 chore: Repository cleanup - Remove unnecessary files (#16)
## Summary

Repository cleanup to remove unnecessary files and streamline documentation after the successful EVPN-VXLAN lab implementation.

Closes #15

---

## Changes

### Files Removed (13 files total)

**Scripts folder:**
- `scripts/deploy.sh`
- `scripts/test-connectivity.sh`
- `scripts/cleanup.sh`

**Root-level markdown files:**
- `BRANCH_SUMMARY.md`
- `BUGFIX_EVPN_ACTIVATION.md`
- `DEPLOYMENT_GUIDE.md`
- `FIXES_APPLIED.md`
- `TESTING_CHECKLIST.md`
- `VLAN_TAGGING_FIX_EXPLANATION.md`

**docs/ folder (entire folder removed):**
- `docs/HOST_INTERFACE_CONFIGURATION.md`
- `docs/configuration-guide.md`
- `docs/quick-reference.md`
- `docs/validation-commands.md`

### Files Updated
- `hosts/README.md` - Fixed broken links
- `README.md` - Updated repository structure section

---

## Final Repository Structure

```
├── .gitignore
├── README.md                    # Main documentation
├── TROUBLESHOOTING.md           # Troubleshooting guide
├── END_TO_END_TESTING.md        # Testing procedures
├── evpn-lab.clab.yml            # ContainerLab topology
├── configs/                     # Switch configurations (10 files)
└── hosts/                       # Host interface configs (5 files)
```

---

## Testing

- [x] Lab redeployed successfully with `containerlab deploy -t evpn-lab.clab.yml`
- [x] L2 VXLAN connectivity verified (host1 ↔ host3)
- [x] L3 VXLAN connectivity verified (host2 ↔ host4)
- [x] All BGP EVPN sessions established
- [x] MLAG pairs operational

Reviewed-on: #16
2025-11-30 19:07:22 +00:00
..

Host Interface Configuration Files

This directory contains network interface configuration files for Alpine Linux hosts in the ContainerLab topology.

Files

  • host1_interfaces - Configuration for host1 (VLAN 40, IP 10.40.40.101)
  • host2_interfaces - Configuration for host2 (VLAN 34, IP 10.34.34.102)
  • host3_interfaces - Configuration for host3 (VLAN 40, IP 10.40.40.103)
  • host4_interfaces - Configuration for host4 (VLAN 78, IP 10.78.78.104)

Usage

Each file is mounted to /etc/network/interfaces in its respective host container via ContainerLab's binds feature:

host1:
    kind: linux
    image: alpine:latest
    binds:
        - hosts/host1_interfaces:/etc/network/interfaces

Format

Files use Debian/Alpine ifupdown format with bonding and VLAN extensions:

auto lo
iface lo inet loopback

auto bond0
iface bond0 inet manual
    bond-mode 4                 # LACP (802.3ad)
    bond-miimon 100
    bond-lacp-rate 1
    bond-slaves eth1 eth2

auto bond0.<vlan>
iface bond0.<vlan> inet static
    address <ip-address>
    netmask 255.255.255.0
    vlan-raw-device bond0

Key Concepts

LACP Bonding

  • All hosts use mode 4 (802.3ad LACP) bonding
  • Dual-homed to MLAG leaf pairs for redundancy
  • Requires matching LACP configuration on switches

VLAN Tagging

  • Hosts handle VLAN tagging via sub-interfaces
  • Format: bond0.<vlan_id> (e.g., bond0.40, bond0.34, bond0.78)
  • Switch ports are configured as trunks allowing specific VLANs

IP Addressing

  • Static IP configuration on VLAN sub-interfaces
  • Subnet assignment based on VLAN ID pattern (e.g., VLAN 40 = 10.40.40.0/24)

Modification

To change host configuration:

  1. Edit the appropriate host*_interfaces file
  2. Commit changes to git
  3. Redeploy the lab: sudo containerlab deploy -t evpn-lab.clab.yml --reconfigure

No need to manually configure hosts after deployment - these files ensure clean, repeatable deployments.

See Also