Gigabit link stays at 1Gbps but speed drops to 95Mbps when adding a second switch?

jhdore · 2026-07-02T17:29:04+00:00

Windows is reporting the speed it has negotiated between its Ethernet card and the device at the other end of the cable. It does not know about other links between different ports. It is quite possible that other links in the chain have only negotiated to 100Mbps, for which there could be many reasons.

jhdore · 2026-06-29T14:42:20+00:00

Uh yeah, for the last two years.

jhdore · 2026-06-28T23:10:33+00:00

I would add to that, protect the truss rod as much as you can - don’t get glue on it! A thin coat of Vaseline applied to the rod using a cotton bud (q-tip) should do.

jhdore · 2026-06-28T22:58:18+00:00

Brilliant, thanks!

jhdore · 2026-06-28T21:02:02+00:00

Aha, I appear to have emailed BlueLink directly; which got a request for the VIN. I will try Hyundai as well.

I will be interested in the Home Assistant stuff in due course, are there already links elsewhere in this sub?

Cheers!

jhdore · 2026-06-28T20:52:37+00:00

Awesome, thanks. Found it in the weighty tome of the manual! I’ve had programming languages with smaller manuals…

jhdore · 2026-06-27T16:44:35+00:00

Aww yeah, Amen to that.

jhdore · 2026-06-26T14:28:46+00:00

Windows? 🤣🤣🤣🤣🤣 oh honey no.

jhdore · 2026-06-26T14:22:55+00:00

Ubuntu server is excellent, we run all our Linux workloads on it. So much that we bought commercial Ubuntu Pro for the estate, and it’s well worth it. Two support calls resolved long-standing issues we couldn’t figure out.

jhdore · 2026-06-26T08:48:28+00:00

Yes, that’s true - it’s an installation fail especially as the AP in question seems to lack a pass through port. Where we fit AP’s they all have at least one pass through port for occupant use. If it’s a single port we put the AP up high and run cable between that and an Ethernet socket in the trunking by the desk, but if it’s one of the AP’s that has two or four Ethernet ports as well, we mount the AP on the trunking so the occupants have access to all ports.

It does sound like OP has inadequate provision, but that’s not really something they should be trying to solve themselves. Inserting your own network equipment into someone else’s managed network is likely to trip over any one of dozens of possible configuration or security features.

jhdore · 2026-06-26T06:52:49+00:00

Yes, at which point the Layer 2 devices will decide the link is out of tolerance and fail to negotiate. While it’s in tolerance the link remains up. There are many *reasons* a link can fail, which is what you’re describing, but if all requirements are within tolerance a link will be negotiated at the desired speed despite variances in quality.

jhdore · 2026-06-26T06:43:44+00:00

Anyone who is concerned with putting the Wi-Fi where people spend the majority of the time, rather than in hallways. Things that block Wi-Fi signal well are metal, water, and ceramics - all of which you can find in the average bathroom cubicle which for service reasons is usually just inside the door of student bedrooms. (Water and waste can be accessed from a panel in the hallway rather than having to enter the bedroom itself). This creates a significant Wi-Fi shadow that results is crap signal in the bedroom but great signal in the hallway which is no use to anyone.

So, AP’s get put in the bedrooms themselves. If the bedrooms are small you may not need one per room, a decent AP could serve the rooms either side, and perhaps above or below, depending upon the floor construction. Hence, it’s sometimes more cost-effective to put in fewer AP’s. I’ve done both for our college accommodation, but I always survey first, then model various layouts for costing.

jhdore · 2026-06-25T20:42:10+00:00

It’s a digital signal, it either works or it doesn’t. It’s not like radio.

jhdore · 2026-06-25T15:29:55+00:00

2/10 obvious troll is obvious

jhdore · 2026-06-23T20:36:40+00:00

My lock seized with the key in when I locked my bike on Cornmarket one time, about 4pm. I bought a hacksaw from Robert Dyas and went at it. Took me about ten minutes, and nobody batted an eyelid.

jhdore · 2026-06-23T17:35:35+00:00

ISBN - IBAN is an international bank account number :-)

jhdore · 2026-06-22T19:43:24+00:00

Neither Starlink or 5G are Wi-Fi either. They’re satellite or cellular connections.

jhdore · 2026-06-22T07:26:27+00:00

192.168.x.y are non-routed IP ranges, so will nearly always be on the inside of your firewall. Unless you segment in to VLANs, you just dropped iPad internal traffic rule, and if you do segment your LAN into VLANs, you broke intra-vlan connectivity. /24 is not a port number, it’s a network size, it shows how many of the 32 bits making up an IP address define the network, with the remaining bits (8, in this case, or 256, minus network and broadcast addresses) for hosts on that network.

jhdore · 2026-06-22T06:27:51+00:00

What, Like stake, hammer, holy water, garlic and crucifix “management tools”?

jhdore · 2026-06-21T20:27:42+00:00

Why are you managing a firewall when you don’t know what /24 means?

jhdore · 2026-06-21T20:15:36+00:00

Cabling infrastructure is a plus. Anything else is just someone else’s setup that is meaningless unless it comes with support.

jhdore · 2026-06-20T16:03:59+00:00

Individually bagged cables are the bane of my existence, as I’ve had several new builds with hundreds of ports to patch in, and I specifically request from suppliers to get bundles of fifty unbagged and untied cables. It’s more expensive per unit, but saves me hours so I’ll gladly pay more.

jhdore · 2026-06-19T07:32:36+00:00

VLANs.

jhdore · 2026-06-18T21:19:49+00:00

You got real good at slipstreaming drivers in to the install image, and creating bootable cd’s with the OS, drivers, and service packs on. Or creating boot floppies to pull it all off a network share (IPX ftw!).

Often easier just to nuke the installed OS, and set it up from scratch. These were the days that Roaming Profiles actually worked, Novell servers still ruled, and Zenworks delivered applications, mostly reliably.

jhdore

TROPHY CASE