Questions tagged [cable]
For questions about physical cables used in a computer network topology. This tag is suitable when your question is about a network cable. Examples: Twisted pair cable, Fiber optic cable, Coaxial cable, Patch cable and other specialized network cables.
257 questions
4 votes
5 answers
2k views
Need Advice - 140m Ethernet Run Between Buildings
I'm facing a technical challenge and could really use your expertise. I need to establish a wired network connection between two points 140 meters apart - well beyond the standard 100m limit for ...
- 49
1 vote
1 answer
89 views
Network Cable Tone testing frequencies and practical applications
Using the Klein Scout Jr. 2 cable tester, the Tone Testing feature sends Low and High frequencies "tones" through the wires to identify wiring issues. I couldn't find what are the actual Low ...
- 187
2 votes
1 answer
282 views
Cat cable pairs' twist rate and how that affects crosstalk
I understand that more twists result is a cleaner signal because the crosstalk is reduced, but how is the rate of twist affecting the physical properties of the wire pair themselves to reduce that ...
- 23
0 votes
0 answers
42 views
How to determine the real MTU and MSS size of my WAN connection (cable modem) [duplicate]
during the setup of wireguard tunnels on my pfSense, I stumbled over the topic of MSS and how to set it correctly. There are many values and recommendations, but as far as I understand the real ...
- 1
0 votes
1 answer
145 views
Cat5 UTP AWG24 vs. Cat6a U/FTP AWG30 - better or worse?
I'm wondering if replacing a Cat5 UTP AWG24 from 2005 with a current Cat6a U/FTP AWG30 is an improvement in terms of signal quality or actually worse given the much thinner AWG? It currently runs ...
- 101
0 votes
1 answer
50 views
Grounding of the shielded segment 6a
There is an unshielded UTP 5e network. There is a vertical line between the floors (upper, middle, lower). A new network is being installed on the ground floor. Since a large load of multimedia was ...
0 votes
0 answers
75 views
2 CAT6 cables in the same conduit. Which one is which?
I have a conduit that goes to four different buildings - from one building to the next. The conduit has two CAT6 cables. I need to splice the cable in each of the buildings, while leaving one cable ...
0 votes
2 answers
107 views
Is it possible that not adhering to a standard color coding in ethernet cables would affect performances?
I have two gigabit devices connected to a gigabit switch using cat 5e ethernet cables, but the wirings on the RJ45 connectors do not respect any of the established color standards, because they were ...
- 101
0 votes
0 answers
261 views
Cisco Console Cable DIY
I received today a cisco cap3702i-e-k9 access point, but sadly i dont have any console cable that i can use. Only things i have for now is PL2303, maybe i can combine it with something. Hello. I ...
1 vote
1 answer
168 views
Are integrated networking devices, frequently called routers, of the switch type or of a router / NIC type?
Odom,Wendell-_CCNA_200-301_Official_Cert_Guide,_Volume_1.pdf : many SOHO Ethernet LANs today combine the router and switch into a single device. Vendors sell consumer-grade integrated networking ...
- 113
0 votes
0 answers
33 views
Just testing a 2 pair twisted internet cable having 4 wires [duplicate]
I am having a problem with my 2-pair ethernet cable. I have connected the 4th, 5th, 7th, and 8th pins, but the 4th pin is not working. I have checked the RJ45 connector and the cable with a multimeter,...
0 votes
2 answers
441 views
Can wrong SFP module damage equipment?
SFP modules convert electrical data from the equipment to optical signals. There is no incoming power surging from an optical port to damage the equipment according to my undarstanding of fibre optics....
0 votes
1 answer
730 views
Two subnets one cable
I have a single ethernet cable between two buildings. If want to run two subnets, 192.158.1.x and 172.20.1.x. The two devices on the two separate subnets are connected to a layer 2 switch at the far ...
- 1
0 votes
1 answer
135 views
Camera instead of ethernet cables
My electricians messed up and installed some sort of camera (or very old cat3?) cables, instead of the requested ethernet cables (see picture). Now I have two of those, running for about 15 meters ...
- 3
1 vote
0 answers
43 views
Identify the cable connector [closed]
Please identify this cable connector by model/part number/supplier. It is a cable between a control box and microprocessor. One photo for scale shows the connector next to an RJ45.
- 131