ACSP VLANs and Link Aggregation 2

Question 1

An Aruba switch port is configured as a trunk. Which VLAN carries traffic when no VLAN tag is present in the received frame?

Accepted Answer

The native VLAN

Answer

On a trunk port, untagged frames are assigned to the native (untagged) VLAN configured on that port.

Question 2

When configuring LACP on an Aruba CX switch, which port priority value makes a port MORE likely to be selected as an active member of the LAG?

Accepted Answer

Lower numerical value

Answer

LACP uses lower port priority values to indicate higher preference, so a lower number increases the chance of a port being selected as active.

Question 3

On an Aruba switch, what is the effect of setting a VLAN to 'voice' type on an access port?

Accepted Answer

It enables LLDP-MED to automatically configure IP phones on a separate voice VLAN

Answer

Setting a VLAN type to 'voice' allows LLDP-MED to signal IP phones to use the designated voice VLAN automatically.

Question 4

A static LAG is configured between two Aruba CX switches. One switch is rebooted. What happens to traffic on the LAG during the reboot?

Accepted Answer

Traffic is dropped because no negotiation protocol re-establishes the bundle

Answer

Static LAGs have no negotiation protocol, so when one end goes down all links in the bundle lose connectivity until the rebooted switch returns.

Question 5

Which Aruba CX command displays the operational state of all LAG interfaces including member port status?

Accepted Answer

show lacp interfaces

Answer

'show lacp interfaces' on Aruba CX displays LACP negotiation state and member port operational status for all LAG interfaces.

(ACSP) Aruba Certified Switching Professional Practice Test