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Question

Is there a way to wire ethernet w/o switch and no IP crash?

by ComCapable / February 8, 2018 7:21 PM PST

Me and my husband just moved into a new home, we both work for a major cable/isp provider and we're wanting to wire the house with ethernet. If need be will purchase an ethernet switch to avoid IP crash however we were wondering if it was possible to wire each outlet into the feed with either scotchloks by jumping the feed to each line or using a punch block. We were told by a few others we know in the field that you probably could but you would more than likely run into issues like IP crash, or drastically reducing the speeds running through the cables. We're going to be using cat5e have unlimited access to this as well as scotchloks, punch blocks, and scotch rockers. I am going to be wiring a total of about 5-6 outlets. If anyone has any ideas please let me know!!

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Clarification Request
What is this IP crash?
by R. Proffitt Forum moderator / February 8, 2018 9:35 PM PST

I'm just someone that wrote router code in the 90s and never heard of IP crash. What is that and why can't the usual router then switch do this?

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What is this IP crash?
by ComCapable / February 8, 2018 9:54 PM PST
In reply to: What is this IP crash?

IP crash is essentially packets of data from two different sources collapsing together when either receiving or transmitting data to/from the modem so basically colliding together while on its path back through the feed line if you imagine it as multiple rivers meeting before they hit the ocean rather than having their own direct feed. This will massively distort the information being transmitted or at worse cause you to lose all connectivity to the feed. A router would work just fine but I have seen a lot of issues in my field of work where the router does not actually rebroadcast the same level of information that the modem does, so using an ethernet switch with poe would better suit what I am wanting. I would rather not have to buy a switch or router but instead find some way to link all the outlets I am running with one direct feed (scotchlok/rockers or punch blocks) without hitting the reduced speeds or the IP crash. I could buy a couple ethernet splitters and have multiple feeds linked to the outlets but this would be less ideal being the current location of the modem is not set in stone and running all those feeds through one outlet cavity would be much more difficult.

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Today's switched hubs and such
by R. Proffitt Forum moderator / February 8, 2018 10:00 PM PST
In reply to: What is this IP crash?

Do not suffer from that. I guess I have to go back to dumb hub days in the 90's to see that issue. That was actually called collisions but even then due to how CSMA/CD (read https://en.wikipedia.org/wiki/Carrier-sense_multiple_access_with_collision_detection ) it wasn't ever a problem unless some maker wrote a bad IP stack or driver.

If you want to go without a router, then get two modems. One for each user. Your ISPs here can do this.

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Scotchlok! WOW!
by mrmacfixit Forum moderator / February 10, 2018 6:46 AM PST
In reply to: What is this IP crash?

8 port Gigabit switch, Router and modem and you are done.

Why POE, he asks out of sheer curiosity

P

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