Damien/arista-evpn-vxlan-clab
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Add host network addressing and test connectivity steps

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Add host network addressing information. Add L2 and L3 VXLAN testing
steps. Add commands to verify EVPN routes on the switches.
This commit is contained in:
Damien Arnodo
2025-11-24 20:10:05 +00:00
parent 8a291426f9
commit 02d41fde2e
2 changed files with 62 additions and 17 deletions
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README.md
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@@ -96,6 +96,20 @@ docker exec -it clab-arista-evpn-fabric-leaf1 Cli
- Spine2 to Leafs: `10.0.2.0/31`, `10.0.2.2/31`, ... `10.0.2.14/31`
- MLAG iBGP peering: `10.0.3.0/31`, `10.0.3.2/31`, `10.0.3.4/31`, `10.0.3.6/31`
#### Host Network Addressing
| Host | VLAN | VRF | IP Address | Gateway | Type |
|------|------|-----|------------|---------|------|
| host1 | 40 | default | 10.40.40.101/24 | - | L2 VXLAN |
| host2 | 34 | gold | 10.34.34.102/24 | 10.34.34.1 | L3 VXLAN |
| host3 | 40 | default | 10.40.40.103/24 | - | L2 VXLAN |
| host4 | 78 | gold | 10.78.78.104/24 | 10.78.78.1 | L3 VXLAN |
**Notes:**
- Host1 and Host3 are in VLAN 40 (L2 VXLAN only) and can communicate at Layer 2
- Host2 and Host4 are in VRF "gold" with different subnets, communicating via EVPN Type-5 routes (L3 VXLAN)
- All hosts use LACP bonding (802.3ad) with dual-homing to MLAG leaf pairs
### Features Implemented
✅ **Underlay**
@@ -152,13 +166,51 @@ show mlag interfaces
### Test Connectivity
```bash
# From host1 to host3 (L2 VXLAN - VLAN 40)
docker exec -it clab-arista-evpn-fabric-host1 ping 10.40.40.3
#### L2 VXLAN Testing (VLAN 40)
Test Layer 2 connectivity between host1 and host3 across the EVPN fabric:
# Check BGP EVPN routes
```bash
# From host1 to host3 (same VLAN 40, different VTEPs)
docker exec -it clab-arista-evpn-fabric-host1 ping -c 4 10.40.40.103
# Check host1 interface
docker exec -it clab-arista-evpn-fabric-host1 ip addr show bond0
# From host3 to host1
docker exec -it clab-arista-evpn-fabric-host3 ping -c 4 10.40.40.101
```
#### L3 VXLAN Testing (VRF gold)
Test Layer 3 connectivity between host2 and host4 in VRF "gold":
```bash
# From host2 to host4 (different subnets via EVPN Type-5)
docker exec -it clab-arista-evpn-fabric-host2 ping -c 4 10.78.78.104
# From host4 to host2
docker exec -it clab-arista-evpn-fabric-host4 ping -c 4 10.34.34.102
# Check routing table on hosts
docker exec -it clab-arista-evpn-fabric-host2 ip route
docker exec -it clab-arista-evpn-fabric-host4 ip route
```
#### Verify EVPN Routes on Switches
```bash
# Check EVPN Type-2 routes (MAC/IP) - for VLAN 40
ssh admin@clab-arista-evpn-fabric-leaf1
show bgp evpn route-type mac-ip
# Check EVPN Type-5 routes (IP Prefix) - for VRF gold
ssh admin@clab-arista-evpn-fabric-leaf3
show bgp evpn route-type ip-prefix ipv4
# Verify VXLAN learned MACs
show vxlan address-table
# Check MAC addresses learned via EVPN
show mac address-table
```
## 📁 Repository Structure
@@ -205,16 +257,3 @@ sudo containerlab destroy --cleanup
- [ContainerLab Documentation](https://containerlab.dev/)
- [RFC 7432 - BGP MPLS-Based Ethernet VPN](https://tools.ietf.org/html/rfc7432)
- [RFC 8365 - A Network Virtualization Overlay Solution Using EVPN](https://tools.ietf.org/html/rfc8365)
## 📝 License
This project is provided as-is for educational and testing purposes.
## 👤 Author
**Damien Arnodo**
- Email: damien@arnodo.fr
---
⭐ If you find this lab useful, please star the repository!