...
The one limitation in this model is that both the devices must have the two VXLAN VNIs configured regardless if there are any hosts connected to it. In Figure 1, Host1 belongs to VNI X but both VNI X and VNI Y are configured on R1. Similarly, Host2 belongs to VNI Y but both VNI X and VNI Y are configured on R2 for asymmetric routing to work properly.
Router Configuration
R1 Configuration
Step 1: Configure VLAN ID, L3 VLAN interfaces loopback interfaces and IP addressing.
| Code Block |
|---|
admin@R1# set evpn vrf vrf1 vni 100 prefix-routes-only
admin@R1# set interface gigabit-ethernet te-1/1/1 family ethernet-switching native-vlan-id 4094
admin@R1# set interface gigabit-ethernet te-1/1/2 family ethernet-switching native-vlan-id 10
admin@R1# set interface gigabit-ethernet te-1/1/10 family ethernet-switching native-vlan-id 10
admin@R1# set l3-interface loopback lo address 1.1.1.1 prefix-length 32
admin@R1# set l3-interface loopback vrf1 address 201.201.201.201 prefix-length 32
admin@R1# set l3-interface vlan-interface vlan4094 mtu 1450
admin@R1# set l3-interface vlan-interface vlan4094 address 40.94.0.2 prefix-length 24
admin@R1# set l3-interface vlan-interface vlan10 vrf "vrf1"
admin@R1# set l3-interface vlan-interface vlan10 mtu 1450
admin@R1# set l3-interface vlan-interface vlan10 address 10.1.1.201 prefix-length 24
admin@R1# set l3-interface vlan-interface vlan1111 vrf "vrf1"
admin@R1# set l3-interface vlan-interface vlan1111 router-mac 00:16:16:16:16:16
admin@R1# set l3-interface vlan-interface vlan1111 mtu 1450
admin@R1# set vlans vlan-id 10 l3-interface "vlan10"
admin@R1# set vlans vlan-id 30 l3-interface "vlan30"
admin@R1# set vlans vlan-id 1111 l3-interface "vlan1111"
admin@R1# set vlans vlan-id 4094 l3-interface "vlan4094"
admin@R1# set vxlans source-interface lo address 1.1.1.1
admin@R1# set vxlans vni 100 vlan 1111
admin@R1# set vxlans vni 10 vlan 10
admin@R1# set vxlans vni 30 vlan 30 |
Step 2: Configure VXLAN VNI and map VNI IDs to VLAN IDs.
| Code Block |
|---|
admin@R1# set vxlans source-interface lo address 1.1.1.1
admin@R1# set vxlans vni 100 vlan 1111
admin@R1# set vxlans vni 10 vlan 10
admin@R1# set vxlans vni 30 vlan 30 |
Step 3: Enable IP routing and configure VRF and hostname.
| Code Block |
|---|
admin@R1# set ip routing enable true
admin@R1# set ip vrf vrf1 |
Step 4: Configure BGP and OSPF related configuration
| Code Block |
|---|
admin@R1# set protocols bgp local-as 65001
admin@R1# set protocols bgp router-id 1.1.1.1
admin@R1# set protocols bgp neighbor 2.2.2.2 remote-as "internal"
admin@R1# set protocols bgp neighbor 2.2.2.2 update-source "1.1.1.1"
admin@R1# set protocols bgp ipv4-unicast
admin@R1# set protocols bgp evpn advertise-all-vni
admin@R1# set protocols bgp evpn advertise ipv4-unicast
admin@R1# set protocols bgp evpn neighbor 2.2.2.2 activate
admin@R1# set protocols bgp vrf vrf1 local-as 65001
admin@R1# set protocols bgp vrf vrf1 router-id 1.1.1.1
admin@R1# set protocols bgp vrf vrf1 evpn advertise ipv4-unicast
admin@R1# set protocols bgp vrf vrf1 ipv4-unicast network 10.1.1.0/24
admin@R1# set protocols ospf router-id 1.1.1.1
admin@R1# set protocols ospf network 40.94.0.0/24 area 0.0.0.0
admin@R1# set protocols ospf network 1.1.1.1/32 area 0.0.0.0 |
Verify Configuration
On R1 run the command run show route vrf vrf1 to display the routes. Notice below that there is a route to subnet 30.1.1.0/24.
| Code Block |
|---|
admin@R1# run show route vrf vrf1
show ip route vrf vrf1
=======================
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
F - PBR, f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
VRF vrf1:
K>* 0.0.0.0/0 [255/8192] unreachable (ICMP unreachable), 04:07:17
C>* 10.1.1.0/24 is directly connected, vlan10, 04:06:28
B>* 11.11.11.147/32 [200/0] via 2.2.2.2, vlan1111 onlink, weight 1, 04:05:30
C>* 30.1.1.0/24 is directly connected, vlan30, 04:06:28
C>* 201.201.201.201/32 is directly connected, vrf1, 04:07:17
show ipv6 route vrf vrf1
=========================
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued route, r - rejected route
VRF vrf1:
C * fe80::/64 is directly connected, vlan1111, 04:06:27
C * fe80::/64 is directly connected, vlan30, 04:06:28
C>* fe80::/64 is directly connected, vlan10, 04:06:28 |