Ethernet Switches

[kbldawg]

I've had enough! No more cheap a$$ Linksys switches. I spent all day tearing my network apart only find another piece of crap switch had gone bad.

What do you guys recommend as a good reliable switch? Preferably one that can be grounded as well.

[tog]

You can find cheap cisco catalysts on ebay...

[bradg]

I've had enough! No more cheap a$$ Linksys switches. I spent all day tearing my network apart only find another piece of crap switch had gone bad.

What do you guys recommend as a good reliable switch? Preferably one that can be grounded as well.

A Catalyst is hardly appropriate for tower-top use, but in an indoor / office application, you really couldn't go wrong.

However, on tower-top use - you didn't say how many copper ports you needed, or if fiber ports or management were necessary, but in outdoor applications we use the ADAM-6520I almost everywhere now, and it just, well, works.

http://www.bb-elec.com/bb-elec/literature/ADAM-6520_DS.pdf

ESD / surge suppression, grounding post, wide temp range, auto-MDIX, 10 to 30Vdc input, DIN mountable. Not cheap, but reliable. Besides, how much is a middle-of-the-night service call worth?


Brad

[palmczak]

I know you asked for good switches...

Indoors HP Procurve are excellent but Cisco is also excellent. We feel we get more bang for our buck from HP, and they have a lifetime no questions warranty. The Procurve 2524 is usually available for less than $200 on ebay and they just run. These switches are 1 thing we can actually say have never ever caused any trouble. We have several Cisco 29xx in the network as well and they are not "usually" the trouble occasionally we find a device that does not want to auto negotiate with a Cisco but forcing the speed and duplex always fixes that.

That said, I have ordered one of these for use in a shelter. of course the real test will be this winter...

http://www.icintracom.com/america/industrial-ethernet-rail-6_74/index.html?osCsid=9682ebac936d49b26d6e620af14f5851

They are cheap and made in China, but so are lots of "good" things these days.



Joe

Joe

[kbldawg]

.... you didn't say how many copper ports you needed, or if fiber ports or management were necessary....

4-12 ports, no fiber, unmanaged

[Stratolinks]

I have used these in the past.

www.weidmuller.com (http://www.weidmuller.com/downloads/pdfs/datasheets/5652480000_Ethernet-Unmanaged_Switches.pdf)

They have wide range DC (10 to 36V) and AC (9 to 24V) inputs, you can use an AC adapter as the primary power source and have the DC available as the backup, or have 2 DC sources or 2 AC, etc. etc.

DIN rail mount for industrial environments. Models with 5 to 24 ports, some with fibre ports. The 5 port basic switch is about $100.00.

And the best part... Many electrical suppliers handle this brand and can readily get them if they don't stock them. Or, you can get them many places on-line too.

[valenti]

Stratolinks, those look nice. I take it they also sell AC ~20V transformers that plug into the DIN rail? (news to me - all my AC is 110v plus)

The spec sheet makes it sound like the ECO models don't support the dual power source option. Is that correct? Assuming the $100 version is the ECO ones.

Has anyone found a POE DC power supply that fits DIN rail and includes surge supression?

[kbldawg]

In case anyone else was wondering too....

http://en.wikipedia.org/wiki/DIN_rail

[Stratolinks]

Stratolinks, those look nice. I take it they also sell AC ~20V transformers that plug into the DIN rail? (news to me - all my AC is 110v plus)
Just use a standard AC wall wart plugged into the AC outlet.
The spec sheet makes it sound like the ECO models don't support the dual power source option. Is that correct? Assuming the $100 version is the ECO ones.
The 8 port econo model supports redundant supplies.
Has anyone found a POE DC power supply that fits DIN rail and includes surge supression?

I use supplies from Omron and Sola that mount on DIN rails and have adjustable output voltage (lets you adjust the voltage to keep the batteries charged). Every industrial supply that I have ever seen has AC input surge protection. Some have very wide range input voltage (85-350VAC). Even with some good spikes on the line these will keep the output where it should be.