Vpc Vtep Dhcp Relay Configuration Example - Cisco Nexus 9000 Series Configuration Manual

vPC VTEP DHCP Relay Configuration Example

• Configure Layer 3 VNI SVI with ip forward.
• Create the routing VLAN/SVI forthe VPC VRF.
• Create the VRF routing.
vPC VTEP DHCP Relay Configuration Example
To address a need to configure a VLAN that is allowed across the MCT/peer-link, such as a vPC VLAN, an
SVI can be associated to the VLAN and is created within the tenant VRF. This becomes an underlay peering,
with the underlay protocol, such as OSPF, that needs the tenant VRF instantiated under the routing process.
Alternatively, instead of placing the SVI within the routing protocol and instantiate the Tenant-VRF under
the routing process, you can use the static routes between the vPC peers across the MCT. This approach
ensures that the reply from the server returns to the correct place and each VTEP uses a different loopback
interface for the GiAddr.
The following are examples of these configurations:
• Configuration of SVI within underlay routing:
Cisco Nexus 9000 Series NX-OS VXLAN Configuration Guide, Release 7.x
152
vrf member evpn-tenant-kk1
ip address 10.160.1.254/24
fabric forwarding mode anycast-gateway
ip dhcp relay address 10.160.2.201
ip dhcp relay source-interface loopback601
interface Vlan1600
vrf member evpn-tenant-kk1
ip forward
Only required for VPC VTEP.
Note
Vlan 1605
interface Vlan1605
vrf member evpn-tenant-kk1
ip address 10.160.5.43/24
ip router ospf 1 area 0.0.0.41
Only required for VPC VTEP.
Note
router ospf 1
vrf evpn-tenant-kk1
router-id 10.160.5.43
/* vPC Peer-1 */
router ospf UNDERLAY
vrf tenant-vrf
interface Vlan2000
no shutdown
mtu 9216
DHCP Relay in VXLAN BGP EVPN