Linked Questions

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(Interpretation of) Maximum cable length on Ethernet [duplicate]

As far as I understand the max. cable length applies to the length between devices (e.g. switches, repeaters etc.). Here I found the following citation: For 10BASE-T, Clause 14.1.1.1 Medium ...
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  • 153
1 vote
2 answers
3k views

Confused about the results from the cable tester

A little bit of backstory, just in case you want some context. In the last couple of weeks the network at least internally has slowed down. As far as I can tell the only things that have changed has ...
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  • 13
3 votes
2 answers
1k views

How close can Ethernet cables be to power line if in parallel?

How close can unshielded CAT 5e/6/6a cables be in parallel to 110V power lines in rooms of common residential/commercial buildings before interference becomes an issue? If proximity between the two ...
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  • 163
1 vote
3 answers
3k views

What is an acceptable bit error ratio?

I recently got a job in IT infrastructure and terminating Cat5e is something relatively new to me. What is an acceptable bit error rate for 1 million packets? Here is a screenshot of a test I ...
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  • 13
1 vote
2 answers
399 views

What can I infer about a network connection using a cable tester (if anything)

I have a NS-468 cable tester for testing cables. This works fine but if I connect just one end of a RJ45 cable to a network, I only get 4 lights. This seems reasonable as I suppose 4 pins are for ...
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1 vote
2 answers
465 views

Going from 100BaseTX to 1000BaseT

How can this happen? Cables are the same (cat 5) so what needs to be done in order to go from 100Mbps to 1000Mbps?
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  • 327
1 vote
3 answers
294 views

Custom CAT6A cable not reaching 1000mpbs

I purchased this CAT6A cable: https://www.amazon.co.uk/gp/product/B01M0VB4YD/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 and did some network cables by myself in various lengths ranging from 1 ...
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  • 11
0 votes
2 answers
542 views

Can I use CAT6e on a CAT6 Patch panel?

I have a customer that is set on using CAT6e cables throughout his building. My job is to terminate the ends into patch panels. Can't really find any info if CAT6e will get the full 10GBPS at 100 ...
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  • 103
2 votes
2 answers
123 views

Effect of large amount of bare ethernet pairs on network performance

I have a client who has been experiencing a significant amount of performance issues in regards to their telemarketing floor. On my initial assessment, I found that where the ethernet is punched down, ...
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  • 43
0 votes
2 answers
582 views

Cat.6 RJ45 pass through connector issues

I am planning to use Cat.6 RJ45 pass through connectors in an office network with around 70 LAN cables. I am worrying if the copper wire endings open in air will have any problems when humidity is ...
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1 vote
2 answers
384 views

Cat6A Junction Boxes in the US

I'm looking around the internet and can't seem to find a Cat6A junction box available in the US. Is there a reason they aren't sold in the US? Basically, I have a Cat6A cable that is run to the wrong ...
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1 vote
1 answer
355 views

SFP to RJ45 for 10Gbit network

I am in the process of upgrading some of our network into 10Gb and grabbed the following: A network switch by netgear, mode:GS110EMX A bunch of assorted cat8 cables(for future proofing) Two 10gtek ...
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  • 111
0 votes
1 answer
267 views

Significance of UTP / FTP in relation to keystone connectors

Whilst I am aware of what F/FTP, and the like, means in relation to cabling, I am a bit nonplussed as to the significance when applied to a keystone connector. To my understanding, if a keystone ...
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3 votes
2 answers
120 views

Intermittently loose communication with upstream managed switch

I have a network for a small company that has been running without an issue for a few years. We have Cisco IP phones on VLAN 100 and computers on VLAN 1. The VLANS are auto assigned by the Cisco ...
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  • 135
0 votes
1 answer
116 views

Is there a network cable tester device that tests the cables with realistic frequency instead of on/off leds?

I am not looking for a specific product recommendation. I am looking for a category of cable tester devices, so I can do a targeted search. I have an rj45 cable tester that tests the ethernet cables ...
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  • 103

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