Damien/arista-evpn-vxlan-clab
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Author SHA1 Message Date
Damien f0e7bd7135 chore(annotation): update AS comments position 2026-01-25 10:19:36 +00:00
Damien 3a9c7cd790 feat(configs): add static route for 100.64.0.0/10 subnet for Tailnet Access 
Update configuration files for all leaf and spine switches to include a
new static route for the 100.64.0.0/10 prefix.

The route points to the next-hop gateway 172.16.0.254, ensuring proper
reachability for the  Tailnet range across the network fabric.
 2025-12-22 18:06:08 +00:00
Damien 913135d966 refactor(configs): migrate management interface to Management0 
This commit updates the management interface configuration across all leaf and spine switches to align with the target environment requirements.

Changes include:
- Changing the primary management interface from `Management1` to `Management0`.
- Removing the `vrf mgmt` assignment, moving the interface to the default global routing table.
- Explicitly configuring `lldp management-address Management0` to ensure the correct management IP is advertised to neighbors.
 2025-12-17 20:10:12 +00:00
Damien c152e04473 chore(annotations): update line width 2025-12-16 21:17:26 +00:00
Damien d9327ed95f feat(configs): enable gNMI API on all network devices 
Enables the gNMI (gRPC Network Management Interface) API across all leaf
and spine switches to allow for telemetry streaming and programmatic
device management.

Configuration details:
- Transport: grpc default
- Provider: eos-native
 2025-12-16 12:00:20 +00:00
Damien 481f3d996d Chore(annotations): Update AS information 2025-12-16 10:35:34 +00:00
Damien bbcf2c9cb9 chore(configs): update admin password for spine switches 2025-12-14 19:26:39 +00:00
Damien 5c55732941 clab annotation 2025-12-14 19:04:37 +00:00
Damien 8ea0fdcf64 adapt line width 2025-12-14 19:02:33 +00:00
Damien 308781e6eb Update readme 2025-12-04 10:12:06 +00:00
DamienandClaude 51f21f16c9 Add topology visualization and annotations 
Add SVG topology diagram and containerlab annotations file with AS number labels and node positioning for the EVPN VXLAN lab environment.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-12-04 10:11:03 +00:00
Damien 1a084d0c3f Add detailed information to README 
Expanded the README to provide more details about the configuration,
including:

- AS Numbers
- IP Addressing (Management, Loopback, Underlay P2P, Host)
- VXLAN Network Identifiers (VNI)
- Features Implemented
- Test Connectivity
 2025-11-30 19:16:56 +00:00
DamienandDamien 1080bf07bb Complete Lab Fixes - L2 and L3 VXLAN Fully Operational (#14) 
## Summary

This PR merges all fixes and improvements from the troubleshooting journey to make the Arista EVPN-VXLAN lab fully operational with both L2 and L3 VXLAN connectivity.

## What's Changed

### 🎯 Major Achievements
- ✅ **L2 VXLAN fully operational** - host1 ↔ host3 connectivity verified
- ✅ **L3 VXLAN fully operational** - host2 ↔ host4 connectivity verified (VRF gold)
- ✅ **LACP bonding working** - dual-homed hosts with proper Port-Channel negotiation
- ✅ **All BGP/EVPN sessions established** - complete underlay and overlay working

### 🔧 Infrastructure Fixes

#### BGP & Routing
- Added `ip routing` command to all spine and leaf switches
- Fixed duplicate BGP network statements on leaf3, leaf4, leaf7, leaf8
- Activated EVPN neighbors on spine switches
- Added loopback network advertisements to BGP

#### MLAG Configuration
- Configured MLAG peer-link in trunk mode (not access) for VLAN 4090/4091
- Added dual-active detection via management interface
- Configured virtual router MAC for MLAG pairs

#### Switch Port Configuration
- Port-Channel1 configured in **trunk mode** on all leaf switches
- Added `switchport trunk allowed vlan` for host VLANs (34, 40, 78)
- Removed `no shutdown` from Port-Channel interfaces

### 🖥️ Host Networking - Complete Redesign

#### Image Change
- **Old:** `alpine:latest` (had bonding syntax issues)
- **New:** `ghcr.io/hellt/network-multitool` (networking tools pre-installed)

#### LACP Bonding Configuration
Proper LACP setup following network-multitool best practices:
```yaml
- ip link add bond0 type bond mode 802.3ad
- ip link set dev bond0 type bond xmit_hash_policy layer3+4
- ip link set dev eth1 down
- ip link set dev eth2 down
- ip link set eth1 master bond0
- ip link set eth2 master bond0
- ip link set dev eth1 up
- ip link set dev eth2 up
- ip link set dev bond0 type bond lacp_rate fast
- ip link set dev bond0 up
```

#### VLAN Configuration
- **L2 VXLAN hosts (host1, host3):** VLAN 40 tagged on bond0
- **L3 VXLAN hosts (host2, host4):** VLANs 34 and 78 tagged on bond0

#### Routing Strategy
- Kept management default route (172.16.0.254 via eth0)
- Added **specific routes** for L3 VXLAN networks instead of default routes:
  - host2: `ip route add 10.78.78.0/24 via 10.34.34.1`
  - host4: `ip route add 10.34.34.0/24 via 10.78.78.1`

### 📁 Files Changed

#### Switch Configurations (Updated)
- `configs/spine1.cfg` - Added ip routing, EVPN activation
- `configs/spine2.cfg` - Added ip routing, EVPN activation
- `configs/leaf1.cfg` - Port-Channel trunk mode, VLAN config
- `configs/leaf2.cfg` - Port-Channel trunk mode, VLAN config
- `configs/leaf3.cfg` - Added ip routing, loopback ads, Port-Channel config
- `configs/leaf4.cfg` - Added ip routing, loopback ads, Port-Channel config
- `configs/leaf5.cfg` - Port-Channel trunk mode, VLAN config
- `configs/leaf6.cfg` - Port-Channel trunk mode, VLAN config
- `configs/leaf7.cfg` - Added ip routing, loopback ads, Port-Channel config
- `configs/leaf8.cfg` - Added ip routing, loopback ads, Port-Channel config

#### Topology (Updated)
- `evpn-lab.clab.yml` - Updated all host configurations with network-multitool image and proper LACP/VLAN setup

#### Documentation (New)
- `hosts/README.md` - Host interface configuration guide
- `hosts/host1_interfaces` - Interface file for host1 (not currently used, kept for reference)
- `hosts/host2_interfaces` - Interface file for host2 (not currently used, kept for reference)
- `hosts/host3_interfaces` - Interface file for host3 (not currently used, kept for reference)
- `hosts/host4_interfaces` - Interface file for host4 (not currently used, kept for reference)

## Testing & Verification

### ✅ L2 VXLAN (VLAN 40)
```
host1 (10.40.40.101) → host3 (10.40.40.103)
- Connectivity: VERIFIED ✓
- VXLAN tunnel: VTEP1 ↔ VTEP3
- MAC learning: Working via EVPN Type-2
```

### ✅ L3 VXLAN (VRF gold)
```
host2 (10.34.34.102) → host4 (10.78.78.104)
- Connectivity: VERIFIED ✓
- Ping results: 0% packet loss, TTL=62
- Routing: Via EVPN Type-5 through fabric
```

### ✅ Infrastructure Status
- BGP Underlay: All sessions ESTAB
- EVPN Overlay: All neighbors ESTAB
- MLAG: All 4 pairs operational
- Port-Channels: LACP negotiated on all hosts

## Related Issues

Fixes #1 - Lab deployment and configuration fixes
Fixes #2 - BGP EVPN neighbors stuck in Connect state
Fixes #3 - Ready for deployment with EVPN activation
Fixes #4 - Lab convergence in progress
Fixes #5 - BGP EVPN neighbors stuck in Active state
Fixes #11 - Host LACP bonding configuration
Fixes #13 - L3 VXLAN default route issue

## Key Technical Learnings

1. **Arista EOS requires explicit `ip routing`** before BGP can function
2. **MLAG peer-link must be trunk mode** to allow VLAN 4090/4091 traversal
3. **VLAN tagging location matters** - hosts tag, switches use trunk mode
4. **network-multitool image** superior to Alpine for LACP bonding
5. **Specific routes better than default routes** when management network present
6. **LACP rate fast** ensures quick negotiation with Arista switches

## Deployment

After merging, deploy with:
```bash
cd ~/arista-evpn-vxlan-clab
sudo containerlab destroy -t evpn-lab.clab.yml --cleanup
sudo containerlab deploy -t evpn-lab.clab.yml
```

No manual post-deployment configuration needed - everything works from initial deployment!

## Breaking Changes

⚠️ **Host image changed** from `alpine:latest` to `ghcr.io/hellt/network-multitool`
⚠️ **Host configuration completely redesigned** - old exec commands replaced

## Reviewers

@Damien - Please review and merge when ready

---

**This PR represents the complete troubleshooting journey and brings the lab to production-ready status with full L2 and L3 VXLAN functionality.** 🚀

Reviewed-on: #14
Co-authored-by: Damien <damien@arnodo.fr>
Co-committed-by: Damien <damien@arnodo.fr>
 2025-11-30 10:24:29 +00:00
Damien 8c3eb7f2d2 Fix MLAG and host interface configuration 
Changed the channel-group mode to "on" on the host-facing interfaces.

Changed the bonding mode to balance-rr in the clab file.
 2025-11-28 09:15:36 +00:00
Damien 02d41fde2e Add host network addressing and test connectivity steps 
Add host network addressing information. Add L2 and L3 VXLAN testing
steps. Add commands to verify EVPN routes on the switches.
 2025-11-24 20:10:05 +00:00
Damien 8a291426f9 Add admin user configuration to all devices 2025-11-21 12:09:23 +00:00
Damien 3946d6b2e5 Add EOS image to .gitignore and update topology 
Update topology to use arista_ceos kind and new image.
 2025-11-17 19:27:57 +00:00