Introduction and Architecture

Question 1

In what sized networks should you use a Mobility Master architecture?

Answer 1

Medium and Large Networks

Question 2

What hypervisors can you run the Mobility Master virtual machines on?

Answer 2

VMWare and KVM

Question 3

Can you deploy a standby Mobility Master on another hardware or virtual appliance?

Answer 3

Yes, this is how you achieve resiliency

Question 4

What devices typically terminate VPN connections on a Mobility Master?

Answer 4

Other MCs, RAPs, IAPs or VIA Clients

Question 5

How many APs can a 7000 series Mobility Controller support?

Answer 5

64 APs

Question 6

What is the maximum switchports can a 7000 series Mobility Controller have?

Answer 6

24

Question 7

Which Mobility Controllers are designed for small networks?

Answer 7

7000 series and the Virtual Mobility Controller

Question 8

What features do you lose if you deploy a Mobility Controller without a Mobility Master?

Answer 8

Clustering, AirMatch and Zones

Question 9

Can you deploy a master controller as a Virtual Mobility Controller?

Answer 9

No, The master controller must be a physical controller

Question 10

Will a Master Mobility Controller validate configuration before pushing it to local controllers?

Answer 10

No it does not validate the configuration before pushing it tot he locals.

Question 11

What things do you need to configure manually on a local controller in a Master / Local topology?

Answer 11

L2 and L3 configurations including VLAN, Interfaces and IP Routing.
Zero-Touch Provisioning (ZTP) and Disaster Recovery mode are not supported on Local Controllers.

Question 12

Can Mobility Masters and Master Controllers (MCs) terminate APs?

Answer 12

The Mobility Master cannot terminate APs, the Master Controller can.

Question 13

Which feature automates the deployment of managed devices, enabling a more “plug-and-play” type of solution?

Answer 13

Zero Touch Provisioning.
With ZTP managed devices acquire information from the network and provision themselves automatically. During disruptions in MM-to-MD connectivity, you can enable Disaster Recovery mode on the managed devices which will help restore connectivity.

Question 14

Can a Mobility Controller perform L2 and L3 switching and routing features?

Answer 14

You can configure the MC as a switch with VLANs, or as a router with IP addresses and routes. When the default gateways for VLANs are on an uplink L3 router, the MC will use L2 switching to move user traffic to the upstream L3 router.
When the L3 switch defines the VLANs on the MC with IP addresses, they will act as the default gateways for the VLANs. Therefore all user traffic will route from the MC to the uplink L3 router.

Question 15

Do Aruba recommend you deploy the MC as a L2 switch or a L3 router?

Answer 15

Aruba recommend deploying the MC as an L2 Switch.

Question 16

Which AP deployment type operates as a typical AP, in that they connect to a controller, acquire their configuration and then service WLAN users?

Answer 16

Campus AP

Question 17

Which AP deployment type are a campus AP that use the radio interface as an uplink.

Answer 17

Mesh AP
Mesh APs use a mesh portal that has a physical connection to the corporate network. The mesh point uses its radio to get an uplink to the corporate network.

Question 18

Which AP deployment type constantly scans the radio environments to gather IDS and RF information.

Answer 18

Air Monitor.

When deployed as an Air Monitor APs do not provide services to WLAN clients.

Question 19

Which AP deployment gathers spectrum data across all operating channels, but does not service clients?

Answer 19

Spectrum Analysis.
APs that do service clients and also gather spectrum data on the channel of operation are operating in hybrid mode. You can also set up SA’s (Temporarily or permanently) to capture radio signals for analysis.

Question 20

Which AP deployment type operates autonomously without the need for a controller?

Answer 20

Instant APs. IAPs elect one AP in their subnet to serve as a Virtual Controller (VC) and thus operate independent of a hardware controller.

Question 21

According to best practice, should you define configurations at the Managed Network node?

Answer 21

As a best practice, Aruba recommends defining configurations at a node below the Managed Network node and not on the Managed Network node itself. This is done to allow for sufficient network growth and scalability while simultaneously maintaining a separate configuration hierarchy for new sites.