Which protocol uses 60-second update frequency by default?

Which protocol uses 60-second update frequency by default?

• A. LLDP
• B. CDP
• C. EIGRP
• D. OSPF

Answer: (B)

In network discovery protocols, devices send periodic advertisements so neighbors can learn about each other. The default cadence for these updates varies by protocol. Cisco Discovery Protocol uses a 60-second interval for its periodic advertisements, so it announces itself to neighbors once a minute by default. LLDP, the standard neighbor discovery, uses a 30-second default interval, so its updates occur twice as often. EIGRP and OSPF rely on different timers for maintaining neighbor relationships (Hello/keepalive timers) that are typically shorter (not 60 seconds). Therefore, the protocol with a 60-second default update frequency is Cisco Discovery Protocol.

In network discovery protocols, devices send periodic advertisements so neighbors can learn about each other. The default cadence for these updates varies by protocol. Cisco Discovery Protocol uses a 60-second interval for its periodic advertisements, so it announces itself to neighbors once a minute by default. LLDP, the standard neighbor discovery, uses a 30-second default interval, so its updates occur twice as often. EIGRP and OSPF rely on different timers for maintaining neighbor relationships (Hello/keepalive timers) that are typically shorter (not 60 seconds). Therefore, the protocol with a 60-second default update frequency is Cisco Discovery Protocol.