Understanding Frame Relay PVC Status Commands for CCNA Success

Which command displays the status of Frame Relay PVCs?

• A. #show frame-relay pvc
• B. #show frame-relay lmi
• C. #show frame-relay map
• D. #debug frame-relay lmi

Answer: (A)

The command that displays the status of Frame Relay PVCs is indeed correct. Using the command "show frame-relay pvc," you can see the details and operational status of the permanent virtual circuits configured on a Frame Relay interface. This command provides important information such as the PVC status (up or down), the local and remote DLCIs (Data Link Connection Identifiers), and the number of incongruities with the Frame Relay subnet. It's a crucial command for network troubleshooting and verification to ensure that your PVCs are functioning properly. The other commands mentioned serve different purposes. For example, the command that checks the LMI (Local Management Interface) provides information on the signaling between the router and the Frame Relay switch, rather than the PVC status itself. The mapping command is intended for viewing how Layer 3 addresses are mapped to Layer 2 addresses, which does not directly show the operational state of the PVCs. Lastly, the debug command is typically used for real-time analysis and troubleshooting of Frame Relay LMI messages, but it does not display the PVC status in a straightforward manner like the first command does.

Are you gearing up for the CCNA and wondering how to handle Frame Relay PVC statuses? You're not alone! Whether you're a seasoned pro or just starting out in the networking world, it's crucial to understand the commands that can save your day when things go sideways. Let's break it down, shall we?

First off, if you want to check the status of your Frame Relay Permanent Virtual Circuits (PVCs), the command you’re looking for is #show frame-relay pvc. It's like your go-to tool in a toolbox – essential for network troubleshooting! By running this command, you can immediately see the operational status of all your PVCs. You’ll get the lowdown on whether they're up or down, the local and remote DLCIs (Data Link Connection Identifiers), and even the number of incongruities detected in the Frame Relay subnet. Pretty neat, right?

You might wonder what those numbers really mean for your network. The status being "up" tells you that everything is running smoothly. But if it’s "down," it’s time to investigate further. Each piece of info from this command helps you ensure your network runs like a well-oiled machine.

Now, don’t get me wrong—there are other commands in the mix that you might find useful. For instance, #show frame-relay lmi gives you insights on the Local Management Interface (LMI), which monitors the signaling between your router and the Frame Relay switch. It has its place, but it won’t give you the direct PVC status like our star command.

What about #show frame-relay map? Well, that's more about mapping Layer 3 addresses to Layer 2. Helpful, yes, but not quite what the doctor ordered when you're seeking the health of your PVCs. Then there's #debug frame-relay lmi, which is great for real-time troubleshooting of LMI messages, but trust me, it can be a bit overwhelming and isn't as straightforward for checking PVC status.

So, what’s the takeaway here? When in doubt, reach for #show frame-relay pvc—it's your best friend for quick visibility into your Frame Relay connections. In networking, having the right commands at your fingertips can make the difference between smooth sailing and troubleshooting nightmares.

And hey, don’t underestimate the importance of practice. Getting these commands down pat will help you not only in the CCNA exam but also in real-world scenarios. Testing yourself with questions can help solidify your knowledge and prepare you for whatever the networking world throws your way.

Want to succeed in your CCNA journey? Equip yourself with the right knowledge and tools. Remember, every command you learn is a step closer to mastering network management!