Practice Activity: Design Your VXLAN Network

Scenario

You are running a multitenant data center. Soon, you will have many different VMs that belong to many different customers so you need more Layer 2 segments than VLANs can offer. Therefore, you design your data center with VXLANs. In this activity, you will answer design challenges related to your VXLAN network.

Topology

Content Review Question

Assume that you have a data center that is running only virtualized devices. Both hypervisors and top-of-rack switches are capable of functioning as VTEPs. Where would you enable the VTEP functionality and why?

top-of-rack switches, for extra performance
hypervisors, because you have only virtual endpoints
hypervisors, for added flexibility
top-of-rack switches, for extra control

Content Review Question

You have VM 1 and VM 2, and you want both VMs to belong to the same VXLAN. How would you configure your network? Assume that you are using multicast-enabled VXLAN implementation.

Assign VM 1 and VM 2 the same VNI and multicast address.
Assign VM 1 and VM 2 different VNIs and multicast addresses.
Assign VM 1 and VM 2 different VNIs but the same multicast address.
Assign VM 1 and VM 2 the same VNI but different multicast address.

Content Review Question

Refer to the following figure. You add a few bare-metal servers to your data center, which was running only VMs previously. You want the bare-metal servers to communicate with the VMs directly on the same Layer 2 network. How should you configure the network to meet the described requirement?

There is no way to use VXLANs if you mix physical (bare-metal) servers and VMs in your network.
Configure VXLANs on the physical servers.
Configure the switches that connect to physical servers as VXLAN gateways.
Configure switches that connect to physical servers as VXLAN routers.

Content Review Question

One of your tenants is leasing multiple VXLAN connections from you. This tenant now wants their yellow VXLAN and green VXLAN to communicate, but remain two separate VXLANs for easier security control. Which of these solutions can you employ?

Communication between VXLANs is not possible. You will have to reconfigure yellow VXLAN members as green VXLAN members.
Configure routing between the yellow and green VXLANs.
Configure 802.1X between the yellow and green VXLANs.
Configure QoS between the yellow and green VXLANs.

Content Review Question

Which two interfaces does each VTEP function have? (Choose two.)

bridge domain trunk port to the access switch
access port to the core switch
trunk port to the IP network
IP interface to the IP network
access port to the VMs

Content Review Question

What are two benefits of using the MP-BGP EVPN control plane for VXLAN? (Choose two.)

Traffic flooding in the overlay network is reduced or eliminated.
The BGP table is reduced.
Forwarding is optimized.
ARP requests are sent.
Multicast transport is required.

Content Review Question

You are using MP-BGP EVPN and you decide to use a Distributed Anycast Gateway. Which statement is true?

All VTEPs will have the same virtual gateway IP address and virtual gateway MAC address.
All VTEPs will have the same virtual gateway IP address but a different virtual gateway MAC address.
All VTEPs will have different virtual gateway IP addresses but the same virtual gateway MAC address.
Distributed Anycast Gateway is not supported in MP-BGP EVPN.