VLAN Switching vs VXLAN Bridging - Packet Walk

This video is for VXLAN beginners. We will configure a simple topology step-by-step from scratch and see an in-depth packet walk from the very first packet. We will see this process for both VLAN end-to-end and then VXLAN. I will be using Arista switches; however, the concept is standard, so it works similarly for other vendors like Cisco, etc.

0:00 Intro and VLAN Switching
10:18 VXLAN Bridging


Configurations used in this video:

=========VLAN Switching=========
cleaf1:

vlan 10

interface Ethernet1, Ethernet5
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

spine1:

vlan 10

interface Ethernet1, Ethernet3
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

bleaf1:

vlan 10

interface Ethernet1, Ethernet5
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

server1:

vlan 10

interface vlan10
ip address 172.16.10.1/24

interface Ethernet1
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

server2:

vlan 10

interface vlan10
ip address 172.16.10.2/24

interface Ethernet1
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown


=========VXLAN Bridging=========
cleaf1:

ip routing
router ospf 1

interface Loopback0
ip address 172.16.0.1/32
ip ospf area 0.0.0.0

interface Ethernet1
no switchport
ip address 172.16.255.1/31
ip ospf area 0.0.0.0
no shutdown


vlan 10
interface Ethernet5
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

interface Vxlan1
vxlan source-interface Loopback0
vxlan vlan 10 vni 10000
vxlan vlan 10 flood vtep 172.16.0.2


bleaf1:

ip routing
router ospf 1

interface Loopback0
ip address 172.16.0.2/32
ip ospf area 0.0.0.0

interface Ethernet1
no switchport
ip address 172.16.255.9/31
ip ospf area 0.0.0.0
no shutdown


vlan 10
interface Ethernet5
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

interface Vxlan1
vxlan source-interface Loopback0
vxlan vlan 10 vni 10000
vxlan vlan 10 flood vtep 172.16.0.1

spine1:

ip routing
router ospf 1

interface Ethernet1
no switchport
ip address 172.16.255.0/31
ip ospf area 0.0.0.0
no shutdown

interface Ethernet3
no switchport
ip address 172.16.255.8/31
ip ospf area 0.0.0.0
no shutdown

server1:

vlan 10

interface vlan10
ip address 172.16.10.1/24

interface Ethernet1
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown

server2:

vlan 10

interface vlan10
ip address 172.16.10.2/24

interface Ethernet1
switchport trunk allowed vlan 10
switchport mode trunk
no shutdown