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1
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1answer
51 views

Using Stranded vs. Solid CAT5 in a cable tray

I'm going to be installing a switch and 40 workstations/printers in a building. All the rooms have raised floors with cable trays running in various grids and there are cable trays going between the ...
1
vote
1answer
81 views

Is crossover cable still needed? [closed]

Do I still need a crossover cable to connect two PC's directly? (NIC <-> NIC)? If not, then why was this needed in the past, and when was it used for this? Specifically, when did crossover cables ...
0
votes
1answer
76 views

Chosing the right CAT6 cable type (STP FTP UTP)

I'm doing a network rewiring project, and I'm planning on using CAT6 cable for the wiring, but I have the choice between STP, FTP or UTP cable. Some of those cables, if not most, will run close to ...
9
votes
1answer
333 views

Proper method for connecting multiple non-stackable network switches?

I deal with many clients in warehousing and industrial applications who have IT staff or local consultants. Many of these sites are still using a 10/100 Megabit switching backbone... I've managed to ...
3
votes
1answer
58 views

What will happen if a PoE powered patch cable is plugged into a normal RJ-45 plug?

I have a couple PoE powered keystone jacks sticking out of a wall in a computer lab. We're going to remove /block the excess ones eventually, but for now I'm worried about somebody plugging a laptop ...
4
votes
1answer
73 views

Category 4 Cabling in my Cisco Network

I have discovered slow performance in various portion of my network accessing network drives and server side applications. When I logged into the switch providing access for these users I ran a show ...
1
vote
3answers
107 views

Robust RJ45 for frequent connections/disconnections [closed]

I am looking for robust RJ45 cables/connectors in an environment where people come and go and plug in and out. After a month of usage, the connectors are worn out and fall out and you need to replace ...
1
vote
1answer
56 views

BT socket Device over Structured Cabling

Not sure if this is the right stack* site to post on but I believe cabling is a just subject. Essentially I have a Credit Card machine which is connected to a phone line via standard BT Socket. So ...
15
votes
3answers
1k views

Connecting two desktop switches with more than one cable?

I was hoping to find a way to increase bandwidth between two desktop switches I have, and I wondered if connecting them with two cables (or perhaps three) instead of just one might increase ...
4
votes
3answers
539 views

Effect of reversing a pair, in cat5 cabling (e.g. swapping stripe and solid)

Is there any practical effect of reversing solid and stripe, when wiring cat5 cables? But if I've got a cable where each pair is a pair but one end is flipped, will this make any practical difference ...
0
votes
5answers
1k views

New office cabling: should we use CAT7 or CAT6a? [closed]

We are going to do the cabling in our new office building and we are thinking to lay down 10Gbit cables since we use HP switches that come with 10Gbit ethernet ports. We will also lay down few fiber ...
2
votes
0answers
89 views

Any tricks for checking if a ethernet cable is in use? [closed]

Faced with bundles of white cat5 in the attic, any suggestions for non-intrusive checks to determine which ones are in use? Thanks, Kent
6
votes
1answer
266 views

Why do metal fasteners (e.g., staples) around ethernet cables impair network performance? [closed]

At one point I was living in a 6 bedroom home that had cat 6 ethernet wired to each bedroom. The internet connection to the bedrooms furthest from the cable modem had terrible performance, though I ...
8
votes
1answer
897 views

Server room wiring questions

I'm looking at rewiring our server room to be more presentable, organized, and easier to troubleshooting. Right now we currently have 4 HP racks (don't know the model right now). We do not have a ...
3
votes
1answer
527 views

SFP+ vs CAT6a for 10GbE

We are looking to implement 10Gig ethernet for our ESX hosts and SANs. There are a number of solutions we have been looking at and it has really boiled down to what will give us the best bandwidth. ...
3
votes
3answers
1k views

Sanity Check: Is my CAT5e cable probably bad, or do I just need different connectors?

I'm working with a small company, and since I'm the only one with even a half-ounce of network infrastructure experience I've got the job of wiring up our network. So please forgive my newbie-ness. ...
7
votes
3answers
1k views

How to test/debug bad network wiring?

I recently bought a place already wired with Cat 5E (8 ports, leading to a central closet). However attempting to get link, nothing works. On closer examination, it was obvious that the ends in the ...
5
votes
2answers
270 views

Creating a network link between 2 very close buildings

I have a charity who have two adjacent medium sized modern detached houses (in the UK): the buildings stand next to each other and are less than 5 metres apart. They have DSL connected to a single ...
0
votes
1answer
518 views

Organizing cabling from patch panel to switches

The cabling between our patch panel and switches isn't a complete nightmare (like this), but is far from well organized. As we add new wall jacks, or office moves happen, cables get moved on the patch ...
5
votes
2answers
3k views

10GbE sfp+ cross over cable required? Is there such a thing?

To preface, this is my first experience with 10GbE networking and I have encountered an issue which my research does not seem to locate a solution for... I have two servers (older DL580G5 and ...
1
vote
2answers
2k views

How to test cat5/cat6 cable runs, using software-only, or simple tools?

Are there any utilities or simple tools or techniques to easily test a CAT5 cable, to see how well was it installed? Cat5 is often installed by amateurs, but has been installed and "working" for ...
6
votes
2answers
284 views

Can I use CAT 6a connectors with 7a cable (and get 6a performance)?

I'm re-wiring a building and want to get the best cable possible laid - it required re-plastering to make a change to the cables and the cables will be there for the next 10 - 20 years. Currently ...
8
votes
5answers
13k views

Cat 6e vs Cat 6a

From what I can understand, Cat 6e does not actually exist but a number of manufacturers are selling some cable labeled as Cat 6e. Some sources say that Cat 6e is just Cat 6a but the manufacturers ...
11
votes
4answers
943 views

Why is a suspended ceiling not allowed in a wiring closet?

I have read in the book Cabling: The Complete Guide to Network Wiring that wiring closets should not have a suspended ceiling. In a few Google searches, I see this concept repeated. I have not been ...
1
vote
3answers
150 views

Cross cable auto route back if NIC is down? [closed]

UPDATE: I just clarified with my friend, he actually meant, the traffic will be passed through from the LAN to WAN port, it's specific to device, in our case it's the Symantec Web Gateway Appliance. ...
3
votes
2answers
282 views

External SAS cable or adaptor with 90 degree plug

We have an HP tape autochanger mounted in a rack, but it's so deep that with the external mini-SAS cable plugged in we cannot close the rear rack door - if we did we'd crush the SAS cable well beyond ...
9
votes
2answers
546 views

Cable management strategy for a small chassis switch

I'm working with a small site buildout that contains a single HP ProCurve 4200vl chassis switch. The data cabling contractor did not provision for any cable management. I'm looking at the rack ...
2
votes
1answer
495 views

Rack tool for measuring cabling?

I'm looking for a tool that can be used to measure the length of Cat 6 cables that need to be installed in a comms rack. I won't be making the cables myself. For example the length of a cable required ...
6
votes
6answers
1k views

Structured Cabling Server Racks

We have the opportunity next week to rewire five server racks which is currently in a real mess. Each rack currently has a switch installed up top with lots of cables hanging around. We are thinking ...
3
votes
1answer
122 views

Acquiring location - need cable map/toning/testing done in house…tools needed?

I was going to ask "best approach?" but I figured it would be closed. I know how to tone/test a cable...but I'm looking for tools, ideas, approaches that will make the following project manageable ...
2
votes
2answers
760 views

How to decide cross or straight cable

I know that you have to connect same devices with cross cable and differents with straight. Although, that's the common idea, in Cisco Packet Tracer you have to connect a PC and a router with cross ...
2
votes
1answer
112 views

What is the easiest way to attach sata cables to the backplane of a 1U super micro case?

It seems that the raid controller breakout cable thats designed for the backplane makes its incredibly difficult to cable it. The right angle bend sata cables need to bend down, making it very ...
9
votes
2answers
618 views

How do I label the network ports in our office?

We have a new office that was punched down with Ethernet in every office and every cubicle. The electrician didn't mark the ports on the patch panel or the wall ports, so I don't know where say port 1 ...
2
votes
4answers
3k views

SFP+ twinax cable compatibility

How compatible are twinax SFP+ cables when used with different hardware vendors' equipment? E.g. are Cisco SFP+ cables fine between an Arista switch and a Solarflare card? How about an Amphenol cable ...
4
votes
3answers
746 views

Moving server room to another part of the building

This question is a bit different than the typical we are moving our server room to an off site location or we are moving the whole office to a new building. Management wants to add some more office ...
3
votes
6answers
975 views

Do you really need cable management for a cabinet with just switches and patch panels?

We are about to start wiring out a building expansion and our vendor has laid out the racks in the following configuration: Option 1 1U Fiber patch panel 2U Cable Manager 2U 48 port Patch Panel 2U ...
16
votes
5answers
2k views

What else do I get with Cat 6 beyond future proofing my wiring?

We are about to put in the wiring in an expansion of our office building and the vendor is proposing we use Cat 6 cabling because it is "faster." Gigabit works fine over Cat 5e which is what our ...
2
votes
3answers
436 views

replacing an ethernet backbone with fibre optic

I live and work in a building that is nearly 20 years old. My Internet connection is in the cellar along with my servers and has a nominal rating of 100 MBit. I have a gigabit switch in the cellar ...
7
votes
3answers
2k views

How to correctly run cables on servers in a data center?

I've read about a few key points, e.g. run all ethernet cables on the right side, all power on the left side, but if possible I'd like to know what you guys do from experience? For example, how do you ...
3
votes
3answers
175 views

Link mode on unmanaged gigabit switches

I have two RJ45 sockets connected by an inaccessible unknown-category twisted pair cable. I plug two unmanaged gigabit switches into the sockets using Cat6 cables, and they negotiate a 100Mbps link. I ...
0
votes
2answers
211 views

long retractable utp cables

Maybe this is not a problem for serverfault but maybe someone knows this. We are planning to go wireless but due to the costs involved we are still using cables in our conference rooms. Does anyone ...
5
votes
2answers
2k views

Best cat6 patch panels? Is price really a factor?

I can go down to my local graybar right now and purchase some AllenTel 48 Port Cat 6 Patch panels I need (part number AT66-PNL-48). They are $275 each. That seems a bit high considering I've seen ...
3
votes
5answers
751 views

Groupings for Network Cable Colors

I noticed a thread Network cable color conventions? that talked about what types of colors to use for cabling in server rooms and closets. I thought that if there was a general consensus as to the ...
0
votes
3answers
135 views

When I plug in a network patch cable to a test notebook what would cause it to not see the link?

I plugged in my notebook via cat5e patch cable to a terminated jack (we had some consultants do the runs), I get no signal not even an indication that it is connected but has no DHCP. I try another ...
3
votes
3answers
5k views

Network wiring template for Visio

Anyone come across a good template/symbol pack for Visio for doing network wiring, patching, switch topologies, etc.? Everything in Visio for networking is 3D, and isn't really conducive to cabling.
2
votes
1answer
161 views

Roughly cutting Fibre Cables

I recently asked a question about which type of Fibre optic cable to use for my installation. We have now found a cable type and supplier and I'm about to order the cable (OM3, Tight Buffered, 12 ...
27
votes
2answers
1k views

Why do cat5 cables sometimes have the fluffy fiber bit in them?

Why do cat5 cables sometimes have the fluffy fiber bit in them?
4
votes
0answers
5k views

What’s the best way to label cables in a data center [duplicate]

Possible Duplicate: What is the most effective solution you used to label cables? We're in the midst of planning for a big data center renovation at my office, which is going to result in a ...
4
votes
5answers
1k views

Creating a Network link between 2 buildings

My company needs to create a network link between two buildings. Currently we have a cat5e network in one building and would like to connect some computers(about 15) in our second building to the ...
4
votes
6answers
414 views

Cabling: What to keep in stock?

I have worked a few different places, each one with a different solution, so I would like to hear your suggestions and ideas. I am looking at a situation with multiple server-rooms. We have a mixture ...