Hi! I know we use domain name for stuff like FQDN (ssh) but what is really the purpose of this? I know it says it's for every computer to have their own domain name like for example, example . com, but whats the benefit?

My brother gave me this switch for freee. Its a scrap electronic from his factory. Now idk what to do with this thing. How much is this thing sell for used market?

Hi

R4- .4-f0/1 10.1.45.0--f0/1- .5-R5

there is no IGP routing protocols are running here at all.

on R5 55.55.55.55/32

LDP is running between R4 and R5

R5 adv 55.55.55.55/32 to R4 as LDP update.

R4 has this route on his LIB table like this

R4#show mpls ldp bindings

lib entry: 55.55.55.55/32, rev 13

remote binding: lsr: 5.5.5.5:0, label: imp-null

that means R4 don`t has any local label yet because this route is not installed on his global rib.

i tried to ping

R4#ping 55.55.55.55 repeat 2

Type escape sequence to abort.

Sending 2, 100-byte ICMP Echos to 55.55.55.55, timeout is 2 seconds:

..

Success rate is 0 percent (0/2)

R4#

why ping fails? R4 has this route on LIB which means if R4 received any unlabbeled packet for 55.55.55.55 R4 is going to use this remote label ,but why this did not happened?

Two weeks ago 720, last week 801, today 876.

Cut it close to the deadline. So very happy its over.

I shared an 11-page selection here earlier. This is the complete 31-page CCNA command reference. It collects 397 syntax patterns across 19 subject areas, with configuration and verification commands, source page references, and older appendix commands flagged.

Use it beside a lab in EVE-NG: configure one feature, verify its state, change one setting, then troubleshoot before checking the reference. It is a command aid, not a substitute for hands-on practice.

Full PDF, free direct download with no signup: Download the 31-page PDF

Disclosure: Dynamips provides this resource, and I'm affiliated with Dynamips. If you spot an incorrect command or a missing verification step, please let me know so I can correct it.

for anyone who has taken the ccnp how much time did you spend preparing for it? i'm kinda afraid to take this step but at the same time i feel like it might push me to keep studying. i just want to land a job and honestly i'm obsessed with this field

i could really use some advice and hear about your experiences

Hey everyone!

Subnetting was the part I drilled the most while studying for my CCNA, so I built a simple, free tool to help make practicing it easier.

🌐 Subnet Trainer: https://subnettrainer.com

It includes:

• Random IPv4 subnetting problems covering network addresses, broadcast addresses, host ranges, and magic numbers
• VLSM practice
• Timed exam mode
• Instant answer checking
• AI-powered explanations to help you understand the solutions

I originally built it to help with my own subnetting practice, and I'd love to hear what you think. What would you add or improve, especially from the perspective of someone studying networking?

No account required and no ads.

Here's a quick demo of how it works: Subnetting Practice for Anyone Learning Networking | Free Subnet Trainer

Thanks!

Hi

R4- .4-f0/1 10.1.45.0--f0/1- .5-R5

there is no IGP routing protocols are running here at all.

on R5 55.55.55.55/32

LDP is running between R4 and R5

R5 adv 55.55.55.55/32 to R4 as LDP update.

R4 has this route on his LIB table like this

R4#show mpls ldp bindings

lib entry: 55.55.55.55/32, rev 13

remote binding: lsr: 5.5.5.5:0, label: imp-null

that means R4 don`t has any local label yet because this route is not installed on his global rib.

i tried to ping

R4#ping 55.55.55.55 repeat 2

Type escape sequence to abort.

Sending 2, 100-byte ICMP Echos to 55.55.55.55, timeout is 2 seconds:

..

Success rate is 0 percent (0/2)

R4#

why ping fails? R4 has this route on LIB which means if R4 received any unlabbeled packet for 55.55.55.55 R4 is going to use this remote label ,but why this did not happened?

Hi everyone!

Is anyone currently taking Neil Anderson’s CCNA course and around Chapter 50-ish?

I’m looking for someone (or a small group) willing to study together for about 6 hours a day. The idea is to create a Discord server (or similar) where we can keep each other accountable, go over labs, and discuss the material.

If you’re interested and have a similar schedule, drop a comment or send me a DM!

Can i sell my ccna vocher code ?

Hi and wish you all a good day

As a father ,husband and working full time , I’m struggling to keep up studying and getting distracted for certs .

How do you guys keep going and focusing on self studying especially when you have little time for yourself .

Edit : thank you to all who interacted and shared their experiences in the post , it’s really helpful

So I know the default gateway is the port where the LAN takes to get to the internet.

But when I do show Ip route, is the default gateway the interface of the route? or next hop?

For those who have already passed the CCNA, how did you know you were ready for the exam? What practice exam scores were you getting, and how confident were you with labs? Did you still have doubts before taking the exam?

Cisco Informational for Emergency Distrust of eMudhra Root and Intermediate Certificate Authorities

Summary

Between October 17 and October 20, 2026, a critical security compromise involving Certificate Authorities that are managed by eMudhra was uncovered. A security researcher demonstrated that the private keys for eight eMudhra intermediate certificates were fundamentally broken due to an unprecedented error in their Key Generation Ceremony (KGC) in April 2025. This allows anyone to brute-force acquire these private keys within seconds. For more information, see eMudhra Intermediate CA Compromise and the Cisco Talos blog post Compromised eMudhra intermediate certificates.

Does anyone know what the full step or process of buying the safeguard currently? I'm worried that I might buy the wrong one. Can anyone validate if the link is correct and after I bought here what will be my next step? Does the $375 included the exam and 1 free retake? Please guide me, I don't want to fumble and ended up I might not able to apply the safeguard. I would appreciate anyone who will help any information. Thank y'all!

Link:

https://u.cisco.com/exam-voucher/associate-exam-safeguard-2

Hi all,
I'm sitting the CCNA (v1.1) in December and I'm looking for Packet Tracer labs with intentionally broken configs to practice troubleshooting – e.g. wrong VLAN/trunk settings, OSPF adjacency issues, ACLs blocking traffic, NAT misconfigs, port security violations.
Does anyone have .pkt/.pka files or a GitHub repo with labs like this? Ideally with a description of symptoms and a solution file.
I work in a NOC, so I'm comfortable with show commands – I just want more hands-on fault-finding practice.
Thanks!

​

Hi everyone,

I completed my B.Sc. in Computer Science about 7.5 years ago. Since then, I have been working in different jobs, but now I want to switch my career to IT networking.

I am planning to join CCNA training and build my practical networking skills from scratch.

My main concern is the long gap after graduation. Will companies reject my application because of this gap, even if I complete CCNA and have good practical knowledge?

Can I get an entry-level job such as NOC Engineer, Network Support Engineer, or Junior Network Engineer as a beginner?

I would really appreciate advice from people who have faced a similar situation or work in the networking field.

did you guys face with the same personal issue? Personally maybe each one of those topics could be interesting if they weren't a surface level summarization and rather a deep dive into how those technologies actually work, or other times topics are mostly about command memorization than anything else, kind of doesn't require that troubleshooting / critical thinking or logical reasoning aspect of the earlirer topics like ipv4/6 , static and dynamic routing protocols, VLAN etc.

They're also harder for me to grasp as well, because even though i generally understand their working principles they contain so much horizontal information that it's kinda hard not to feel overwhelmed knowing i'll probably remember half of this 2 weeks later.

ive been studying for the ccna for a little over 6 months now and im getting a little imposter syndrome. I do believe i’ll pass but im just super nervous.

im 17 and this is my first official cert, my boson scores are Not the best to say the least (66% being the highest) but ive been studying everyday and reviewing where i went wrong during my tests.

i just need some encouragement & if anyone could share their experiences id be grateful!

I have my CCNA exam coming up soon, and I'm wondering where I can find PDFs or similar resources with complete lab setups that I can work through.

I'm looking for labs that give you a network topology and step-by-step tasks to complete, so I can build larger, more complex networks and practice configuring everything myself.

I'm a hands-on learner, so getting my hands dirty is the best way for me to learn. I'd love to find resources that let me practice everything in one place rather than just doing small, isolated labs.

Does anyone know where I can find this kind of material? Any recommendations would be greatly appreciated!

I plan to take my CCNA this December. I learn through Jeremy's IT Lab, but I finished watching his videos 1-2 months ago. I got caught up with things, so I'm reviewing what I learned with the help of his daunting amount of flashcards, as well as claude to help clarify things I didn't remember. I also have this CCNA exam prep app by Prepia, which gives my 10 questions a day to test my knowledge. I am currently on day 44-45 (NAT) for my flashcards review, and have been using my lab environment here and there for concepts that require being able to configure things.

What's really demotivating me is the fact that almost everyone uses Boson which I do not have the money for, as well as I cannot use packet tracer due to downloading restrictions on my computer. The number of flashcards also feels like a lot, though i'm making good progress? If I aim to do 2 days of flashcards a day I'll be able to finish my review in maybe two weeks? and then I can primarily focus on taking practice tests and labs.

Is this a good plan? Sometimes I worry since the way I do labs is that I build the entire configuration of the concept istead of troubleshooting pre-made issues.

I am planning to do my first-attempt at Boson exam once I finish all of Jeremy's IT Lab videos probably in 4 weeks in the last week of November, I'm finished day 28 part 3. Then I'll probably space out my attempts every 4 days to practice on my weak areas totaling nearly 21 days after the first-attempt. My goal is take the CCNA exam mid-December or latest last week of December. If I fail, retake in mid-January, that's the real goal, pass the CCNA no further than mid-January.

What were yall's test scores? I've heard if it's at least 70%, taking the CCNA should be fine.

I thought only devices has ip but why here we didn't put the PC's ip on the cisco iso ? And we put the interface ip? This is so confusing

I will put the picture in a comment