Damien Arnodo
3b00be13d7
Remove references to non-existent docs/ and scripts/ folders. Update structure to reflect actual repository contents. Refs #15
260 lines
7.2 KiB
Markdown
260 lines
7.2 KiB
Markdown
# Arista EVPN-VXLAN ContainerLab
|
|
|
|
A production-ready Arista BGP EVPN-VXLAN data center fabric topology using ContainerLab and cEOS.
|
|
|
|
## 🎯 Overview
|
|
|
|
This lab demonstrates a complete EVPN-VXLAN data center fabric with:
|
|
- **2 Spine switches** (BGP Route Reflectors)
|
|
- **8 Leaf switches** forming 4 VTEPs (MLAG pairs)
|
|
- **BGP EVPN overlay** with L2/L3 VXLAN
|
|
- **MLAG configuration** for high availability
|
|
- **Test hosts** for validation
|
|
|
|
## 📐 Topology
|
|
|
|
```
|
|
┌──────────┐ ┌──────────┐
|
|
│ Spine1 │ │ Spine2 │
|
|
│ AS65000 │ │ AS65000 │
|
|
└────┬────┘ └────┬────┘
|
|
│ │
|
|
┌───────────────┼────────────┼───────────────┐
|
|
│ │ │ │
|
|
┌────┴────┐ ┌────┴────┐ ┌────┴────┐ ┌────┴────┐
|
|
│ Leaf1/2 │ │ Leaf3/4 │ │ Leaf5/6 │ │ Leaf7/8 │
|
|
│ AS65001 │ │ AS65002 │ │ AS65003 │ │ AS65004 │
|
|
│ VTEP1 │ │ VTEP2 │ │ VTEP3 │ │ VTEP4 │
|
|
└────┬────┘ └────┬────┘ └────┬────┘ └────┬────┘
|
|
│ │ │ │
|
|
Host1 Host2 Host3 Host4
|
|
```
|
|
|
|
## 🚀 Quick Start
|
|
|
|
### Prerequisites
|
|
|
|
- ContainerLab installed
|
|
- Docker installed
|
|
- Arista cEOS image: `ceos:4.35.0`
|
|
|
|
### Deploy the Lab
|
|
|
|
```bash
|
|
# Clone the repository
|
|
git clone https://gitea.arnodo.fr/Damien/arista-evpn-vxlan-clab.git
|
|
cd arista-evpn-vxlan-clab
|
|
|
|
# Deploy the topology
|
|
sudo containerlab deploy -t evpn-lab.clab.yml
|
|
|
|
# Check status
|
|
sudo containerlab inspect -t evpn-lab.clab.yml
|
|
```
|
|
|
|
### Access Devices
|
|
|
|
```bash
|
|
# SSH to any device (password: admin)
|
|
ssh admin@clab-arista-evpn-fabric-leaf1
|
|
|
|
# Or use docker exec
|
|
docker exec -it clab-arista-evpn-fabric-leaf1 Cli
|
|
```
|
|
|
|
## 📋 Configuration Details
|
|
|
|
### AS Numbers
|
|
- **Spine**: AS 65000
|
|
- **VTEP1 (Leaf1/2)**: AS 65001
|
|
- **VTEP2 (Leaf3/4)**: AS 65002
|
|
- **VTEP3 (Leaf5/6)**: AS 65003
|
|
- **VTEP4 (Leaf7/8)**: AS 65004
|
|
|
|
### IP Addressing
|
|
|
|
#### Management Network
|
|
- Subnet: `172.16.0.0/24`
|
|
- Spine1: `172.16.0.1`
|
|
- Spine2: `172.16.0.2`
|
|
- Leaf1-8: `172.16.0.25-32`
|
|
|
|
#### Loopback Interfaces
|
|
- **Router-ID Loopbacks (Lo0)**: `10.0.250.0/24`
|
|
- Spine1: `10.0.250.1/32`
|
|
- Spine2: `10.0.250.2/32`
|
|
- Leaf1-8: `10.0.250.11-18/32`
|
|
|
|
- **VTEP Loopbacks (Lo1)**: `10.0.255.0/24`
|
|
- VTEP1: `10.0.255.11/32`
|
|
- VTEP2: `10.0.255.12/32`
|
|
- VTEP3: `10.0.255.13/32`
|
|
- VTEP4: `10.0.255.14/32`
|
|
|
|
#### Underlay P2P Links
|
|
- Spine1 to Leafs: `10.0.1.0/31`, `10.0.1.2/31`, ... `10.0.1.14/31`
|
|
- 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**
|
|
- BGP IPv4 Unicast
|
|
- ECMP with 4 paths
|
|
- eBGP between Spine-Leaf
|
|
- iBGP between MLAG pairs
|
|
|
|
✅ **Overlay**
|
|
- BGP EVPN address family
|
|
- VXLAN data plane
|
|
- EVPN Type-2 (MAC/IP routes)
|
|
- EVPN Type-5 (IP Prefix routes)
|
|
|
|
✅ **High Availability**
|
|
- MLAG dual-homing
|
|
- Dual-active detection
|
|
- Anycast VTEP gateway
|
|
|
|
## 🧪 Testing & Validation
|
|
|
|
### Verify BGP EVPN Neighbors
|
|
|
|
```bash
|
|
# On any spine
|
|
show bgp evpn summary
|
|
|
|
# On any leaf
|
|
show bgp evpn summary
|
|
```
|
|
|
|
### Verify VXLAN
|
|
|
|
```bash
|
|
# Check VXLAN interface
|
|
show interface vxlan1
|
|
|
|
# Check remote VTEPs
|
|
show vxlan vtep
|
|
|
|
# Check VXLAN address table
|
|
show vxlan address-table
|
|
```
|
|
|
|
### Verify MLAG
|
|
|
|
```bash
|
|
# Check MLAG status
|
|
show mlag
|
|
|
|
# Check MLAG interfaces
|
|
show mlag interfaces
|
|
```
|
|
|
|
### Test Connectivity
|
|
|
|
#### L2 VXLAN Testing (VLAN 40)
|
|
Test Layer 2 connectivity between host1 and host3 across the EVPN fabric:
|
|
|
|
```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
|
|
|
|
```
|
|
arista-evpn-vxlan-clab/
|
|
├── README.md # This file
|
|
├── TROUBLESHOOTING.md # Troubleshooting guide
|
|
├── END_TO_END_TESTING.md # Testing procedures
|
|
├── evpn-lab.clab.yml # ContainerLab topology
|
|
├── configs/ # Device configurations
|
|
│ ├── spine1.cfg
|
|
│ ├── spine2.cfg
|
|
│ ├── leaf1.cfg
|
|
│ ├── leaf2.cfg
|
|
│ ├── leaf3.cfg
|
|
│ ├── leaf4.cfg
|
|
│ ├── leaf5.cfg
|
|
│ ├── leaf6.cfg
|
|
│ ├── leaf7.cfg
|
|
│ └── leaf8.cfg
|
|
└── hosts/ # Host interface configurations
|
|
├── README.md
|
|
├── host1_interfaces
|
|
├── host2_interfaces
|
|
├── host3_interfaces
|
|
└── host4_interfaces
|
|
```
|
|
|
|
## 🗑️ Cleanup
|
|
|
|
```bash
|
|
# Destroy the lab
|
|
sudo containerlab destroy -t evpn-lab.clab.yml
|
|
|
|
# Remove all related containers and networks
|
|
sudo containerlab destroy -t evpn-lab.clab.yml --cleanup
|
|
```
|
|
|
|
## 📚 References
|
|
|
|
- [Original Configuration Guide](https://overlaid.net/2019/01/27/arista-bgp-evpn-configuration-example/)
|
|
- [Arista EOS Documentation](https://www.arista.com/en/support/product-documentation)
|
|
- [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)
|