A. Device Identifiers
B. Capabilities list
C. Platform
D. Route identifier
E. Neighbor traffic data
Answer: A, B, C
Explanation:
CDP is a Cisco Proprietary Protocol; to support forwarding CDP Messages over an interface, that interface must support SNAP headers. Any LAN interface, HDLC, Frame Relay, and ATM all support CDP. The Router or switch can discover layer 3 addressing details of nighboring routers - without even configuring that layer 3 Protocol - because CDP is not dependent on any particular Layer 3 protocol.
CDP Discovers several useful details from neighboring device:
B. Capabilities list
C. Platform
D. Route identifier
E. Neighbor traffic data
Answer: A, B, C
Explanation:
CDP is a Cisco Proprietary Protocol; to support forwarding CDP Messages over an interface, that interface must support SNAP headers. Any LAN interface, HDLC, Frame Relay, and ATM all support CDP. The Router or switch can discover layer 3 addressing details of nighboring routers - without even configuring that layer 3 Protocol - because CDP is not dependent on any particular Layer 3 protocol.
CDP Discovers several useful details from neighboring device:
- Device Identifier - Typically the host name
- Address List - Network and data link addresses
- Port Identifier - Text that identifies that port, which is another name for an interface
- Capabilities List - Information on what the device does - for instance, a router or switch
- Platform - The model and OS level running in the device
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