ACSP OSPF Routing Configuration 2

Question 1

In an Aruba switch running OSPF, what is the effect of configuring a router-id manually before any OSPF adjacencies form?

Accepted Answer

The router uses the configured ID permanently even if loopback IPs change

Answer

A manually configured router-id takes precedence over loopback or physical interface IPs and persists unless changed and OSPF is reset.

Question 2

Which OSPF network type is automatically assigned to an Aruba switch interface configured as a point-to-point VLAN link?

Accepted Answer

Broadcast

Answer

Ethernet/VLAN interfaces default to broadcast network type in OSPF unless explicitly changed with the ip ospf network command.

Question 3

An Aruba switch is configured with 'ip ospf passive-interface vlan 10'. What behavior change occurs on VLAN 10?

Accepted Answer

OSPF hellos are suppressed, preventing neighbor formation but still advertising the network

Answer

A passive interface suppresses OSPF hello packets, preventing adjacencies while still advertising the subnet as an OSPF route.

Question 4

What happens to OSPF routes when the OSPF process is restarted on an Aruba switch without graceful restart configured?

Accepted Answer

All OSPF routes are immediately removed from the routing table during convergence

Answer

Without graceful restart, restarting the OSPF process drops all OSPF-learned routes from the RIB until adjacencies re-form and SPF recalculates.

Question 5

In OSPF area design on Aruba switches, what is the primary purpose of a stub area?

Accepted Answer

To reduce LSA flooding by blocking Type 5 external LSAs from entering the area

Answer

Stub areas block Type 5 AS-external LSAs, reducing the LSDB size by replacing external routes with a default route from the ABR.

(ACSP) Aruba Certified Switching Professional Practice Test