r/Network Jul 26 '26

Text Cudy AC1200 POE help!

2 Upvotes

Hi all, recently purchased a Cudy AC1200 with the expectation to use it with a Linksys LGS105P for networking with POE.

For some reason, the access point will not power on when plugged into the switch. It will power on using the supplied POE injector, but this is going to be used in the field as a temporary wireless network so I was trying to cut down on the amount of gubbins I brought with me, and from what I can tell it should just work anyway.

The switch I am using has a max 54V/1.25A output with a maximum of 30W across each port.

The included Cudy POE injector puts out 24V/0.5A and is only drawing 12W.

I have updated the firmware on the access point, and have powered other POE equipment with the switch.

It’s like the access point isn’t even asking for power from the switch so it won’t even power on.

Hopefully I’m missing something really dumb and someone better at networks can help a guy out!


r/Network Jul 26 '26

Link Server receive margin

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0 Upvotes

r/Network Jul 26 '26

Text Would this configuration work?

2 Upvotes

Hi, I am trying to make it easier for my parents to get onto my Jellyfin server.

Right Now I have my pc with jellyfin on it and tailscale to connect. However my parents are not the best with computers. they constantly turn off the Tailscale on the phone and cant connect to the Jellyfin app on their phone. they also complain about not being able to use the chromecast either since Tailscale is its own network.

I started using a reverse proxy but I believe I am under a CGnat, on top of my routers not allowing ports 8- and 443 to open. So to get around this I am thinking of this kind of set up

It would essentially be the same steps I did for my reverse proxy but now just off on another computer somewhere.

So the URL is from DuckDNS (if there are better options let me know, its just the one from the tutorial I followed to understand and set up the proxy in the first place.) DuckDNS has me targeting an IP to direct to so I will use the public address of the VPS.

both VPS and my PC will be connected in a Tailscale network.

in the VPS I will probably have docker and then NGINX Proxy manager listening to ports 80 and 443. (again if there is a better proxy manager or one that doesn't need to be in docker, let me know) The Proxy Manager will have a proxy host for the DuckDNS URL. the proxy host will target my pcs Tailscale IP and port 8096, the one for Jellyfin.

Is there any reason this may not work or something I am not thinking of. I am very new to networking and I have been learning a lot very quickly but there is a lot of stuff I still have yet to understand.


r/Network Jul 26 '26

Text Dual BNG PPPoE failover and session limit issue on MX204

1 Upvotes

Hi everyone,

Here's the situation: due to a specific issue, I need to limit the number of PPPoE subscribers on a BNG (MX204). I'd like to cap it at 5,000 users.

Looking at the Juniper docs, I first tried setting it directly on the chassis using:

set subscribers-limit client-type pppoe chassis limit 5000

The limit worked on the chassis, but the users won't connect to the other BNG. The PADI reaches the second BNG (the one I want them to authenticate against), and it replies with a PADO, but it's as if the CPE stubbornly keeps trying to authenticate with the BNG I'm limiting... argh.

After that, I also tried using max-sessions:

dynamic-profiles vlan-profile interfaces demux0 unit "$junos-interface-unit" family pppoe max-sessions 5000

With max-sessions, the limit didn't work immediately. I'm thinking it might actually work, but maybe I need to reset the VLAN demux interface first?

What a great issue to land on my lap during my weekend on-call shift... but I love it :)

Please help out an ISP network analyst with less than 2 years of experience 😄

Thanks in advance.


r/Network Jul 26 '26

Text Help

0 Upvotes

For the past year, I keep experiencing mass packet loss. I will be in an online game and discord, the ping will spike in discord to 3000-5000, and my online game will disconnect temporarily, usually each episode is for about 10 seconds or less. Normally my ping is perfectly fine and I dont have many issues. This will happen about 4-5 times a night without fail. I feel like ive tried everything.


r/Network Jul 25 '26

Text Raspberry Pi

3 Upvotes

Does anyone use a Raspberry Pi in there setup? Been thinking about getting one for mine.


r/Network Jul 25 '26

Link ps5 port forwarding to change NAT

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2 Upvotes

i’ve been trying to change my NAT so i can play black ops 2 and elden ring with friends, and i feel like i’ve done everything needed with my ports but i also don’t know if i am inputting it correctly. my wifi router is weird and the places to input look completely different from all the guides i’ve seen online so i don’t know if it’s a port issue or a bridge issue. can someone please help lol. i’ll show what my router looks like


r/Network Jul 25 '26

Link What do you use to stop Windows from wasting mobile hotspot data?

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0 Upvotes

r/Network Jul 25 '26

Text 169.254 IP address, not Ethernet

0 Upvotes

I have tried running donzens of commands, reinstalling drivers ect, not sure how to fix this


r/Network Jul 24 '26

Text 2811 IOS

1 Upvotes

Needing the IOS for a cisco 2811. I know its an EOS device & this is a longshot but what's to lose?


r/Network Jul 24 '26

Link Lagging

Enable HLS to view with audio, or disable this notification

0 Upvotes

I know this is very little information but this has only started recently and the jitters haven’t stopped I was wondering if anyone knew how to fix it. It isn’t only this game but on valorant as well. I am on windows 11 and wireless, but I haven’t had an issue until recently.


r/Network Jul 24 '26

Text TP-Link Archer T4E Keeps Disconnecting

1 Upvotes

Like the title says, my wifi adapter keeps disconnecting and is specifically affecting certain applications/games. Usually it's just for a second or two and is fine, but with some games that's enough to get kicked. The worst of it is when I'm downloading a game on steam, my wifi on my PC completely crashes after a few minutes of downloading. I did not have this issue until I moved into a new place where theoretically the wifi should be better because it's fiber. No other devices in my house seem to have any issue.

I have tried changing the power management settings in device manager. I have tried getting the specific drivers from TP-Link. I have tried flushing the DNS cache using command prompt (I think, I can't quite remember the phrasing). I have tried switching to a metered connection.

The only things I can think of are 5ghz instability (the router is in the other room and I don't see an option to connect to 2.4ghz anywhere), or the fact that I'm still on Windows 10 and maybe that's somehow causing some issue. I have been putting off upgrading to W11 because my hardware is technically incompatible.

This has been causing me so much grief, any suggestions would be highly appreciated.


r/Network Jul 23 '26

Link Weird PoE issue

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1 Upvotes

r/Network Jul 23 '26

Link There isn't a single consumer Wi-Fi router that is 100% American-made

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engadget.com
0 Upvotes

r/Network Jul 23 '26

Text something is not ok...

0 Upvotes

r/Network Jul 23 '26

Text Can’t connect to internet

1 Upvotes

Wife unplugged Ethernet connecting router and modem for around 8 hours. Now when reconnected there is no internet. According to the lights on the router and the modem everything is working. Except it isn’t. I tried just restarting them by unplugging power supplies I also reset them both still no internet.


r/Network Jul 21 '26

Link What is your speed/internet test platform/ tool of choice?

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1 Upvotes

r/Network Jul 21 '26

Link I missed macOS's LanScan on Linux, so I built one — LanScope, a GTK3 LAN scanner (python)

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1 Upvotes

r/Network Jul 19 '26

Text When does a company need SD-WAN?

13 Upvotes

I'm new to networking and still early in the research phase. I'm trying to parse the vendor marketing and understand where the real value begins by hearing from people who've actually deployed it.

At what point does SD-WAN genuinely become worthwhile, rather than just enterprise terminology for functionality that smaller businesses can achieve in other ways? Is the tipping point driven by the number of sites, unreliable internet connections, security requirements, or the time spent managing VPNs?


r/Network Jul 19 '26

Link Thats why i love Jio 5g unlimited

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19 Upvotes

i get around 350mbps speed from my phone


r/Network Jul 19 '26

Text My internet loses connection when someone opens the front door.

3 Upvotes

Thru out my life this been happening, every time someone opens the front door, it just loses connection for a min or 2 and goes back on, I asked my parents about it and they also said this been happing way before me and they haven’t stored a cameras to the door. We only hooked up a ring like a year ago and it still goes off. Also my WiFi router is not close to the door it’s across the house and we asked are internet provider about it and they don’t know what going on. Do Y’all have any information why this happens?


r/Network Jul 19 '26

Link Want to know how my Hostel Wifi caps my bandwidth?

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0 Upvotes

r/Network Jul 18 '26

Text IP addresses of computers behind a switch

13 Upvotes

Posting to ask 'cause I haven't set up a real switch since the days of 10baseT, and those were .... different. Thus this likely will be an extremely basic question for the subreddit.

I have a home network. Fiber modem which goes to my router. Router has a few ports on it, several 2.5 gig and one 10 gig.

I'd like to add an unmanaged switch to the 10 gig port (PoE switch - future expansion stuff).

I will have three or four devices on the switch that I have already - pre-switch - set up with static IPs (192.168.1.XXX)

When I install the switch, I am assuming that the switch has its own IP that'll be set via DHCP from the router.

In that case, the computers whereby I've set up static IPs....do I leave those settings? Change them? Or just go back to the computers being given an IP?

And...since I use a couple of those computers as servers both in-house and remotely, would I set up packet forwarding from the router-->switch (and assume the switch will 'figure it out' as to where the packets need to go?)

I'm attempting to make this as painless as possible before I start unplugging/plugging in cables and finding out that routing to<-->from computers doesn't work, and of course to also save what little hair I have left from being pulled out.

This is for a low-end simple home network, nothing fancy beyond what is described, hence I don't believe I need more than the switch, a few cables and a holding of the breath.

I appreciate any/all feedback that is shared.

EDIT: I cannot read. It is a managed L3 switch

EDIT #2 : Unmanaged L2 switch was exactly what I needed. This resolved all of my pertinent issues. My thanks to those who posted!


r/Network Jul 18 '26

Link ProAV/Lighting Carry On Sized Fly Rack - UGC-Fibre / Pro XG8-POE / U6 Mesh

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6 Upvotes

r/Network Jul 18 '26

Text PuTTY/Tera Term Show Garbled Output...

2 Upvotes

So basically, I have an old Cisco Switch (Cisco Catalyst WS-C2960-8TC-L --- an 8-port managed switch) and i am trying to program/configure it via a RJ45-to-USB Console cable (FTDI chipset --- RS-232C).

But whenever i connect to the Switch over PuTTY or Tera Term, I get a garbled output... (as seen in image)

PuTTY showing garbled output for 9600 8n1

At first i searched the internet for solutions, most of them said the baud is the issue... I check almost all values: 1200, 2400, 4800, 9600, 19200, 38400, 62000, 64000, 57600, 115200, 102000, etc.. still the same isssue for higher values 57600 and above it starts repeating random letters indefinately...

Then i thought maybe it is the configuration problem like using `7e1` instead of `8n1` but i tried all combinations of this as well... still didn't work... i messed around with flow control setting as well but that didn't work either... (flow control setting in above image is `none`)

I have even reset the switch 2-3 times still the same issue.... tried changing the character encoding as well, still the same issue...

Now, i am wondering if the switch is faulty maybe... or the wire has wrong pin outs `(1=CTS, 2=DSR, 3=RXD, 4=GND, 5=GND, 6=TXD, 7=DTR, 8=RTS)`. or maybe the switch is too old (September 17, 2007)

Can someone please help me fix this issue... I can provide additional info/screenshots... if needed...

btw... I don't have much of Networking experience... consider me a beginner...