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Gentlemen. Netgear GS305 vs. Cisco SG110D-05-EU.

post #1 of 7
Thread Starter 
Good morning/evening/night,

I have a question for you gentlemen on this forum regarding the type of LAN switch you may be using/reccomending.

Here's the thing.

I'm here purely to ask how good the Cisco equivalent of a switch is vs. the Netgear.

More specifically, on the part of how good it works.

I currently already own a Netgear and let me tell you one thing. I live in a dorm, so I have an ethernet port on my wall which connects to a Cisco Fa 100mbps switch downstairs.
If I use my net through the wall socket, connected directly to my Intel adapter and running it with optimized regsitry/adapter settings. Everything is fine and handy dandy.

Now. When I hooked up my Netgear there and connected my 2 PCs to the switch(Hence the reason of requring it, I have another high-end system here). What happens is that in-game, major major stutter. Browsing webpages too, like wow.
No lag but terrible stutter, it's so noticeable that it irritates when you look at it.
I can't exactly comprehend what causes it. Probably the darn things buffer filling up or something, Because my first observation was that if I left it alone for a lil' bit(regarding network activity), then it worked fine-ish for a lil' longer at the start before it began going crap. I haven't gotten proficient with wireshark, yet, and I haven't fired the damn thing up at the writing of this to actually check.
Definately the switch though, because going straight to the wall socket = Normalized computing. System doesn't stutter. Not only in-game but also, on webpages neither. As if the thing is connected I stutter everywhere that requires network activity.

So, the ultimate question to you good folks here smile.gif. How do the Ciscos own unmanaged switche fare in this field? The cost difference is already double, and to hell with it, I was almost willing to buy a rack switch but that won't fit on the desk. Money isn't really a block here, and I could actually use a managable one for my uni studies as well but that's another topic and frankly a bit absurd too I guess.

Will it stutter just as that supposed trash of a Netgear, or will it not?

What do you think?

PS. Bear in mind, majority reviews seemed to be positive on the thing but lo' and behold, this happened and I bet majority of the plebs don't really attribute the cause for stutters to their internal network. I'm talking about Amazon. Although I did google, I wasn't thorough enough to dig up this problem.

Thanks for reading.

((If I posted it to the wrong sub-section, apologies. Move it to the correct one please))
post #2 of 7
Hi There,

I'm not sure where to start, but I'll try to recreate a diagram of what your network looks like:

Internet(ISP) --> Modem --> Edge-Router/Firewall ---> Cisco Fa/100 Switch ---> Netgear GS305 Gigabit Switch (Your room) --> Your two PCs connected with gigabit NICs

If this is incorrect please let me know.

It might be entirely possible that the switch itself is dropping packets internally. This can happen sometimes between the access ports and uplink when the backplane isn't sufficient, this only really happens under extreme load. I don't really think that's what's going on here though.

It also might not be a good idea to automatically assume that the issue is with the Netgear switch either without testing it by itself. It might be an issue specifically between the two switches. Most people creating these reviews on amazon also aren't chaining switches together. Most of them also aren't using a fast ethernet switch at this point since it's an older standard. During the back off timer nothing gets sent either. Eventually the switches start talking to each other again until a collision happens again and the process starts over.

I'm really wondering what model the Cisco switch is downstairs in the basement.

Does it have these features:

-Auto-MDI/MDIX eliminates the need for crossover cables
**-Auto-negotiation for automatic connection at the highest common speed between switch and an end device

The fact that you're using a Fa/100 switch downstairs might be a tip off that it's an older switch, but an older switch doesn't necessarily mean it won't work. How old really matters because the features I listed above are important for your kind of setup to work properly and easily, especially in a situation where the rest of the equipment has auto-negotiation, gigabit already, and some other equipment doesn't.

It sounds like what you're experiencing is a "Duplex Mismatch". The netgear is set to auto while the Cisco fast ethernet is set to full. What ends up happening is your Netgear will actually be on half duplex while your Cisco switch downstairs is on full. This makes it so they are often talking on the same wires at the same time, called collisions. When collisions happen none of the data really gets sent. Instead it's just noise. There might also be a backoff timer algorithm built into the switch too which slows the connection down / creates timeouts as well when collisions happen.

So, how do you fix this?

Well you need to somehow set or make it so both ports on both sides are set to full / half-duplex / or auto. Pretty much they need to share the same setting, assuming you have a managed switch at one side. If you don't then you'll probably just have to update the older switch to something with proper auto-negotiation. Make sure to get something fairly recent too because much older switches which had early implementations of auto-negotiation had compatibility issues between manufacturers as well.
Edited by re2onance - 8/26/16 at 6:11am
post #3 of 7
Thread Starter 
I'm gonna eat my own hat here right now.

But agreed.

I managed to "fix" it. And hastily jumped to conclusions...

I actually think you're right too because some time later after retrying it had fixed itself. I attributed the fix to actually changing my buffer sizes to their defaults.

However, trying to recreate the problem, I cant replicate it anymore. Changing my buffers back to the supposed broken values.

Very likely possible that that may have been the issue with duplex modes.

The switch model they have downstairs is a Cisco something, I don't recall the model name.

Your network diagram is basically spot on, par few elements but where it matters, you're right there.
post #4 of 7
If the Cisco switch is managed you can connect via a serial port and tty in, change the port to auto if you're the admin for it. I mean does it work for long periods of time without issue? Because if it's a duplex issue than it should pretty much be consistently an issue with enough use. Another thing to consider is that if it is a managed switch downstairs they may have something like sticky MACs set up with the access port. Or some type of system where it authenticates based on the MAC address.
Edited by re2onance - 8/26/16 at 7:45am
post #5 of 7
Thread Starter 
No it's fine. It's a dorm net, I'm not the admin nor do I have access or the ability to telnet into it.

There are no long-term problems. It's simply gone.

Funny, frankly, I don't even know where the issue was anymore, only that there was one.
post #6 of 7
Thread Starter 
Oh and I did purchase a Cisco. Gonna compare later anyway.
post #7 of 7
Edited by re2onance - 9/15/16 at 12:42am
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