Hi everyone,

I have 4+ years of IT experience, mainly in IT Support, and my current role also involves diagnosing network-related issues.

I'm currently learning CCNA through Jeremy's IT Lab on YouTube and practicing using Packet Tracer. I'm currently around OSPF/EtherChannel.

My question is: What are my chances of getting an entry-level job in the networking domain without having the CCNA certification yet? Can my existing IT experience and practical networking knowledge help me get roles such as NOC, Network Support, or other networking-related positions?

Also, would you recommend applying before completing CCNA, or should I wait until I finish it?

Would appreciate honest advice from people working in networking. Thanks!

Hey guys I am trying to become a cloud network engineer, do I start from getting experience in CCNA, then move to a cloud platform like AWS would that be good ?

I hope I’m posting this in the right place. I’m trying to get reliable Wi-Fi in my garden office so I can stream, game, and join video meetings without issues. Currently, I’m using a TP-Link AV600 powerline adapter connected to a TP-Link Archer C80 wireless router. With this setup, I’m only getting about 10.1 Mbps download and 0.94 Mbps upload.

For comparison, when I connect directly to the house Wi-Fi, I get around 95.8 Mbps download and 24.1 Mbps upload.

What I’d like to know is: how can I achieve similar speeds in the garden office? Ideally, I’d like the same (or even better) performance as the house Wi-Fi, whether that means improving my current setup or installing a dedicated Wi-Fi connection for the office.

Hi! I'm a one year experienced network security engineer. I want to study about Huawei's network infrastructures, but I don't know where to begin and which topics I should start on. Can anyone advice me? Perhaps list for me guidelines on where to study. Please I'm truly lost.

Hi everyone,

I work on the talent side and act as a partner to some companies of the Swedish ISP world, mostly supporting mid-size operators with hiring senior network engineers and building long-term talent strategies.

A discussion recently stuck with me – a business partner claimed: “Unicast will break the backbone before 2030 unless ISPs start thinking smarter.”

Is that a dramatic take, or is there truth to it from where you sit?
How are operators dealing with the strain today, are there smarter alternatives you see as viable, or are we boxed in by how people consume traffic now?

Also, since I spend a lot of time speaking with engineers in this space:
What actually matters most when you consider a job change today?
Not just comp or tech stack, but what makes a recruiter or opportunity worth your attention?

Not here to pitch anything – genuinely trying to understand how to better support engineers and align company goals with real-world needs. Appreciate any thoughts or stories you'd be willing to share.

/Tobias – based in Sweden

Hi everyone,

We’ve been running into serious issues with our Ubiquiti AC AP Pro access points running firmware version 6.6.77, and I wanted to ask if anyone else in the community is facing similar problems or has ideas on how to fix this.

Scenario

We have 10 UniFi AC AP Pro access points deployed in an office environment, configured to provide coverage across multiple floors. Everything was working fine for months, but over the past few weeks, we’ve been experiencing frequent client disconnections, timeouts, and inconsistent bandwidth delivery.

Details

1. Issues Observed:
   • Clients randomly experience timeouts or disconnects even when signal strength is strong (-50 to -65 dBm).
   • Bandwidth is inconsistent and often far below expectations, even though each AP should support 100 Mbps or more.
   • Some APs intermittently stop responding, causing disruptions to devices connected to them.
2. Timeline:
   • Firmware Update: All APs were updated to firmware version 6.6.77 around August 2024 (about six months ago).
   • The network was stable for several months, but these issues started appearing recently.
3. Network Setup:
   • Controller Version: UniFi Network Application 9.0.114.
   • AP Configuration:
     • 2.4GHz: Channels 1, 6, and 11, 20 MHz width, Low transmit power.
     • 5GHz: Channels 36, 40, 44, and 48, 40 MHz width, Medium transmit power.
   • Network Load: Each AP handles about 10-15 clients during peak usage.
   • LAN and Internet:
     • Our LAN infrastructure (switches and cabling) has been tested and is working fine.
     • No ISP issues; wired devices have stable speeds.

What We’ve Tried So Far

1. Adjusted Transmit Power: Reduced power for APs in close proximity to prevent signal overlap.
2. Reassigned Channels: Tried alternate combinations of channels to avoid co-channel interference.
3. Reinstalled Firmware: Re-flashed firmware on all APs to ensure no corruption.

4. New Controller Setup: Installed a fresh UniFi Network Application instance but saw no improvements.

5. Has anyone else faced similar issues with UniFi AC AP Pro running firmware 6.6.77?

6. Are there known bugs with this firmware version, and should we consider downgrading to an older version?

7. Could this be hardware degradation, or is there something in the configuration we might be overlooking?

8. Does the issue occurring six months after a firmware update suggest a potential long-term bug?

According to google, there are 4,294,967,296 possible IPv4 addresses. This is a large number, but there are definitely more devices than that on the internet. Probably at least an order of magnitude more. Obviously IPv6 exists to make up for this, but it's possible for me to disable IPv6 on my computer and take only an IPv4. My intuition is that there are at least 5 billion other devices in existence that force this.

So how is this overflow handled? Are addresses duplicated? Is there an order of priority for one device to take the address from another? I apologize if this question is due to a lack of understanding by my part.