Deployment Guide

34 VCF on VxRail Multirack Deployment using BGP EVPN
6.2 Configure leaf switch NSX-T overlay networking
In this section, the specific networking required to support the NSX-T overlay networks are configured on
sfo01-Leaf1A. Figure 18 shows three networks, VLANs 2500, 1647, and 1648. VLAN 2500 is used to support
NSX-T TEPs and VLANs 1647 and 1648 are used for north-south traffic into the NSX-T overlay.
Note: The physical connections from the VxRail nodes to the leaf switches use the PCIe card in slot2.
1/1/49-50
1/1/51-52
sfo01-Leaf1A
Underlay: Default VRF
Default VRF
1/1/49-50
1/1/51-52
VLTi
1/1/54
VLT Domain 1
1/1/17 1/1/18
VLAN 2500
172.25.101.251
VLAN 1647
172.16.47.1
VRRP virtual
address
VxRail
Node 1
TEP Gateway:
172.25.101.253
sfo01-Leaf1B
Underlay: Default VRF
Default VRF
1/1/53 1/1/54
1/1/17 1/1/18
VLAN 2500
172.25.101.252
VLAN 1648
172.16.48.1
VLAN IP address
VxRail
Node 3
TEP Gateway:
172.25.101.253
1/1/53
192.168.1.1
192.168.2.1
192.168.1.3
192.168.2.3
172.25.101.253
172.25.101.253
AS 65101
Layer 3 connectivity to Spine switches
NSX-T networking
1. Configure the interface VLAN 2500 to carry east-west overlay traffic. This VLAN uses the ip
helper-address command to forward DHCP requests to the DHCP server.
sfo01-Leaf01A(config)# interface vlan 2500
sfo01-Leaf01A(conf-if-vl-2500)# description sfo01-w-host-overlay
sfo01-Leaf01A(conf-if-vl-2500)# no shutdown
sfo01-Leaf01A(conf-if-vl-2500)# mtu 9216
sfo01-Leaf01A(conf-if-vl-2500)# ip address 172.25.101.251/24
sfo01-Leaf01A(conf-if-vl-2500)# ip helper-address 10.10.14.5
sfo01-Leaf01A(conf-if-vl-2500)# vrrp-group 250
sfo01-Leaf01A(conf-vlan2500-vrid-250)# virtual-address 172.25.101.253
sfo01-Leaf01A(conf-vlan2500-vrid-250)# exit
sfo01-Leaf01A(conf-if-vl-2500)# exit