Layer 2 discovery protocols: CDP and LLDP

3 quick checks≈1% of the testFoundational

Reading is free. Sign in to tick off lessons, keep your place and track your mastery.

By the end you’ll be able to

Explain the purpose of Layer 2 neighbor discovery and the operational role of CDP and LLDP in identifying directly connected devices.
Differentiate CDP as a Cisco proprietary protocol and LLDP as an open standard used for multivendor discovery.
Interpret key neighbor information learned through CDP or LLDP, including device identity, local and remote interfaces, platform, and capabilities.

0% read

Determine when CDP or LLDP information can assist in documenting topology or troubleshooting local connectivity issues.

This lesson hasn’t been written yet

CCNA lessons are written from the official syllabus the first time a learner opens them, then saved for everyone. Sign in and this one is written for you in a minute or two. It’s free.

Sign in Create a free account