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VXLAN-EVPN/documentation/eos configuration/leaf1.md
2024-07-27 12:07:12 +00:00

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# Leaf 1 configuration
## Pre-config Setup
Disable ZeroTouch provisioning :
```config
en
zerotouch cancel
```
Enable the multi-agent configuration on Arista switch to be able to use EVPN feature
```config
en
conf
service routing protocols model multi-agent
```
Enabling IP Routing
```config
conf
ip routing
```
## IP address Configuration
Configure need to match with [Lab Topology](../../lab_vxlan.yml)
```yml
links:
- endpoints: ["spine1:eth1", "leaf1:eth1"]
- endpoints: ["spine1:eth2", "leaf2:eth1"]
- endpoints: ["leaf1:eth2", "host1:eth1"]
- endpoints: ["leaf2:eth2", "host2:eth1"]
```
That means :
```config
interface Ethernet1
description TO_SPINE01
no switchport
ip address 10.1.1.1/31
!
interface Ethernet2
description TO_HOST1
switchport mode trunk
!
interface Loopback0
description VTEP
ip address 10.10.110.1/32
!
```
## BGP Protocol
```config
router bgp 65101
router-id 10.10.110.1
maximum-paths 4 ecmp 4
neighbor SPINE_GROUP peer group
neighbor SPINE_GROUP allowas-in 1
neighbor SPINE_GROUP ebgp-multihop 4
neighbor SPINE_GROUP send-community extended
neighbor SPINE_GROUP maximum-routes 12000
neighbor 10.1.1.0 peer group SPINE_GROUP
neighbor 10.1.1.0 remote-as 65001
!
address-family ipv4
neighbor 10.1.1.0 activate
```
To check peer status :
```cli
show bgp summary
```
## BGP EVPN Overlay
```config
interface Loopback0
description VTEP
ip address 10.10.110.1/32
!
ip prefix-list VTEP_PREFIX seq 10 permit 10.10.110.1/32
!
route-map RMAP_VTEP permit 10
match ip address prefix-list VTEP_PREFIX
!
router bgp 65101
neighbor 10.10.110.2 peer group VTEP_GROUP
neighbor 10.10.110.2 remote-as 65102
neighbor 10.10.110.2 update-source Loopback0
neighbor VTEP_GROUP peer group
neighbor VTEP_GROUP ebgp-multihop 5
neighbor VTEP_GROUP send-community extended
!
address-family evpn
neighbor 10.10.110.2 activate
!
address-family ipv4
no neighbor 10.10.110.2 activate
redistribute connected route-map RMAP_VTEP
```
To check peer status :
```cli
show bgp summary
show bgp evpn
```
## VXLAN IRB Configuration
```config
ip virtual-router mac-address 00:0a:bc:10:11:02
!
vlan 50
name IRB_SERVICE
!
interface Vlan50
description CUSTOMER01_ANYCAST_GW
vrf CUSTOMER01
ip address virtual 10.50.0.1/24
!
interface Vxlan1
description VTI
vxlan source-interface Loopback0
vxlan vlan 50 vni 1050
vxlan vlan 50 flood vtep 10.10.110.2
!
router bgp 65101
!
vlan 50
rd 10.50.0.0:65101
route-target both 10.50.0.0:1200
redistribute learned
```
Now, hosts can ping each other, and ping to the VSI work too.
```config
show vxlan address-table
```