Interesting. I didn't know some of the D-Link's had that "feature"Originally Posted by Thorn
Worth bearing in mind
I hate to drag the thread back on topic, but a solution for finding broken Cat5 cable that is much cheaper than Fluke or other fine instruments, is the D-Link WBR-1310 wireless router. The wired LAN side has a built-in test interface on the internal web page that can very accurately tell the distance to a break in a cable. It was accurate to +/-6" in my tests. The WBR-1310 can be found for less than $50. Other D-Link routers/switches may also have this capability.
We now return to our previous talk of Tankers in High Heels*, which is already in progress...
(*Kinda sounds like the title of a cheezy pr0n flick!)
Thorn
Stop the TSA now! Boycott the airlines.
Interesting. I didn't know some of the D-Link's had that "feature"
Worth bearing in mind
Absolutely,
Although the main two reasons for liking the "tac fiber" had nothing to do with its "crush resistance" and everything to do with its puncture resistance and the "tips" if you will.
The reason for the puncture resistance was that even if we buried them... vehicles would drive over them, and compress the dirt/stones and everything in it down onto the cable; I have personally found stones, twigs, and once, a ballpoint pen puncturing my commercial fiber runs (it also doesn't help a lot that commercial fiber is flat).
The other reason is the way the cables are terminated. TFOCA cable is terminated by a sort of "twist together" metal plugs if you will (look at the pictures, I don't describe very well). In order to use them with commercial equipment, such as a Cisco 3550 switch, you have to use a sort of "breakout box". This was a plastic box with a TFOCA connector that was spliced into a commercial fiber patch cable, and that was plugged into a male to male fiber adapter screwed into a hole cut in the wall of the box. We connected this to the commercial equipment using a commercial fiber patch cable. The reason we liked it this way, even though it was more complicated, was that the box could be mounted onto something, and if any of the cables were yanked/pulled/tripped over ect, the commercial parts would pop out of whatever it was connected to and could be plugged back in (usually without having to replace it), the TFOCA part of the cable was much more resistant to these things and since they were "screwed" together and then mounted somewhere, much less prone to detaching.
This made a massive difference in our workload, especially when the layouts where as such that there was a switch for about every 3-4 tents and it would have to located out in the user work space (corner of a tent) rather then in a comm closet, so it would be protected from the dust and some of the heat.
In all large corporations, there is a pervasive fear that someone, somewhere is having fun with a computer on company time. Networks help alleviate that fear.
-John C. Dvorak
DiggThis-09-f9-11-02-9d-74-e3-5b-d8-41-56-c5-63-56-88-c0
Quick disconnect I believe is what you are trying to describe. Although I have seen better implementations of it.
When we were first switching over to it, and training Soldiers in my last job there were several incidences where they would get into a vehicle ( and take off)that had several cables hooked up to outside sources, and would rip the things right apart. Now they are supposed to be better capable to handle those "get out of dodge quick" type scenarios.
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Hmm,
It would be interesting to see what they have come up with now, as the cable that we used would do that same exact thing (rip apart) if you applied too much pressure to them.
I guess that the best way to describe the connections that we used would be akin to a "child proof" medicine cap where you have to press down and turn to release them, although they also had a "shield" to keep the dust and dirt out that actually screwed together with threads. This did not need to be screwed together for it work however.
I have seen this in some newer fiber connectors; the Rx and Tx pigtail connectors are rounded rather than flat/square, and have a sheath that is metal and spring loaded with a sort of L-shaped cutout that you have to press and turn on to a peg on the plug. Of course these are much smaller and much less sturdy.
In all large corporations, there is a pervasive fear that someone, somewhere is having fun with a computer on company time. Networks help alleviate that fear.
-John C. Dvorak
DiggThis-09-f9-11-02-9d-74-e3-5b-d8-41-56-c5-63-56-88-c0
Heh, or in our case, sitting on the floor under the coffee pot table....
http://idisk.mac.com/barrywoods/Public/Hmmm.jpg
Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69
Ya know what's even scarier than that in the picture.Heh, or in our case, sitting on the floor under the coffee pot table....
http://idisk.mac.com/barrywoods/Public/Hmmm.jpg
Some of the CAT5 cables are broken out into two RJ45's.
A third party security audit is the IT equivalent of a colonoscopy. It's long, intrusive, very uncomfortable, and when it's done, you'll have seen things you really didn't want to see, and you'll never forget that you've had one.
Works for 10Mb connections. These were for CAMS terminals. Green screen crap similar to as400.
Of course, if you really wanted to have some fun, go to Wal-Mart late at night and ask the greeter if they could help you find trashbags, roll of carpet, rope, quicklime, clorox and a shovel. See if they give you any strange looks. --Streaker69
The pic that Barry posted above contains exactly the new kind of fiber connectors I was referring to.Heh, or in our case, sitting on the floor under the coffee pot table....
http://idisk.mac.com/barrywoods/Public/Hmmm.jpg
Thanks, Barry
In all large corporations, there is a pervasive fear that someone, somewhere is having fun with a computer on company time. Networks help alleviate that fear.
-John C. Dvorak
DiggThis-09-f9-11-02-9d-74-e3-5b-d8-41-56-c5-63-56-88-c0
Those are ST, I have them all over my plant.The pic that Barry posted above contains exactly the new kind of fiber connectors I was referring to.
Thanks, Barry
http://www.aos-fiber.com/graphics/Ac...Connectors.jpg
A third party security audit is the IT equivalent of a colonoscopy. It's long, intrusive, very uncomfortable, and when it's done, you'll have seen things you really didn't want to see, and you'll never forget that you've had one.
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