Exploring show frame-relay options When you enter the Cisco IOS command show frame-relay ?, which of the following subcommands are available: dlci, neighbors, lmi, pvc, map?

Introduction / Context:Knowing the correct IOS subcommands speeds up Frame Relay troubleshooting. The show frame-relay family exposes Local Management Interface (LMI) status, Permanent Virtual Circuit (PVC) health, and address maps. Recognizing legitimate subcommands avoids parser errors and focuses your diagnostics.

Given Data / Assumptions:

• Candidate tokens listed: dlci (1), neighbors (2), lmi (3), pvc (4), map (5).
• We are using common Cisco IOS releases.
• We want valid subcommands following show frame-relay ?.

Concept / Approach:

Standard, widely supported subcommands include show frame-relay lmi, show frame-relay pvc, and show frame-relay map. These reveal LMI counters, PVC states, and the Layer-3-to-DLCI mappings respectively. Tokens like dlci and neighbors are not standard subcommands in this syntax across classic IOS images.

Step-by-Step Solution:

Verification / Alternative check:

Use context-sensitive help on a live device to confirm available options; you will consistently find lmi, pvc, and map. Some platforms may offer additional device-specific items, but dlci and neighbors are not standard here.

Why Other Options Are Wrong:

• “1 only” or “2 and 4”: include invalid tokens.
• “All of the above”: incorrectly includes unsupported tokens.
• “4 and 5 only”: omits LMI, which is valid and commonly used.

Common Pitfalls:

• Confusing show frame-relay map (L3-to-DLCI mapping) with routing adjacency tables.
• Ignoring LMI counters that quickly reveal link health and mismatched types.

Final Answer:

3, 4 and 5