ACSP OSPF Routing Configuration 5

Question 1

An Aruba switch has two equal-cost OSPF paths to a destination. What is the default OSPF behavior for traffic across these paths?

Accepted Answer

Equal-cost multipath (ECMP) load balancing up to the configured maximum paths

Answer

OSPF installs multiple equal-cost routes in the RIB enabling ECMP; AOS-CX supports configuring the maximum number of ECMP paths.

Question 2

What does configuring 'ip ospf cost 50' on an Aruba switch interface accomplish?

Accepted Answer

It manually overrides the automatically calculated cost, influencing path selection

Answer

The 'ip ospf cost' command manually sets the interface cost, overriding the auto-calculated value, allowing administrators to influence which path OSPF prefers.

Question 3

In an Aruba OSPF network, which LSA type is flooded only within its originating area and describes the router's own links?

Accepted Answer

Type 1 Router LSA

Answer

Type 1 Router LSAs are generated by every OSPF router and describe all its links and states; they are flooded only within the originating area.

Question 4

An Aruba switch running OSPF shows a neighbor stuck in INIT state. What is the most likely cause?

Accepted Answer

The remote router receives hellos but the local router's hello is not being received by the remote router

Answer

INIT state means the local router sees the remote router's hellos but is not yet listed in the remote router's hello packet, indicating a one-way communication problem.

Question 5

What is the administrative distance of OSPF routes on an Aruba AOS-CX switch by default?

Accepted Answer

110

Answer

OSPF has a default administrative distance of 110 on Aruba AOS-CX, the same as Cisco IOS, used to prefer routes from different routing protocols.

(ACSP) Aruba Certified Switching Professional Practice Test

(ACSP) Aruba Certified Switching Professional Practice Test

ACSP OSPF Routing Configuration 5