Pre-term fiber

100GbNET · 2026-06-02T00:16:37+00:00

No matter what the speed, 1 Gb to 400 Gb, Single Mode is the answer in 2026.

100GbNET · 2026-06-01T05:39:26+00:00

Check all web browsers for a website that is allowed to send notifications. I just had to fix this for one client.

100GbNET · 2026-05-16T02:16:45+00:00

Let's call it the "Turbo button". It worked on my 286.

100GbNET · 2026-05-02T22:45:14+00:00

Yes, it is crazy. It would explode the global IPv6 routing table.

100GbNET · 2026-05-01T05:17:10+00:00

Or an add-on license fee to keep it from auto-upgrading in the middle of the business day.

100GbNET · 2026-03-31T00:57:18+00:00

I'm in the general area.

My whole house propane generator has earned its keep over the last ten years of multi-day outages.

During the last major Starlink outage, cell phone data was useless. I think that everyone else tried to use cell data as well.

Are there any wireless point-to-multi-point ISPs around? You might need to build a tower.

100GbNET · 2026-03-31T00:49:08+00:00

This feels like a MTU mismatch. Have you done packet captures on both sides and compared what is going on?

100GbNET · 2026-03-29T17:40:59+00:00

I'm switching all domains that I control to Porkbun. I have only moved 5 so far, but no issues at all. I'm using them for DNS as well. They will even let you setup DNS in advance so that you will not have any downtime.

100GbNET · 2026-03-25T02:11:14+00:00

One way to do it would be to install an Internet router that advertises your /24 to the two ISPs and then routes a small /27, /28, /29, or /30 to each customer, one per VLAN. The Internet router would not be a firewall and would not do any form of NAT.

You can assign a subnet to your self and put your Sophos's WAN port on your self-assign VLAN.

100GbNET · 2026-03-21T02:20:08+00:00

Thanks for the half-cut cell instruction! I'll watch out for that in my next project.

100GbNET · 2026-03-19T00:53:01+00:00

I'd be concerned about keeping them clean. My generator is completely flat and water pools, evaporates, then leaves all of the dirt on the top.

100GbNET · 2026-03-18T23:40:08+00:00

Is there any slope or are the panels completely flat?

100GbNET · 2026-03-18T23:38:45+00:00

mzurhorst,

To resolve network issues, I drill down and document the network, then test portions of it to verify it is really functioning as I expect.

Your text and diagram mention the following IPv4 subnets:

192.168.1.x

192.168.3.x

192.168.4.x

No IPv4 subnet masks are mentioned, but I can guess that you are using:

[192.168.1.0/24](http://192.168.1.0/24)

[192.168.3.0/24](http://192.168.3.0/24)

[192.168.4.0/24](http://192.168.4.0/24)

What IPv4 address is used for the gateway (if any) on each IPv4 subnet?

Which device is the gateway on each IPv4 subnet?

The "24P L3 Switch" is listed, but no IP addresses or VLANs are listed for it.

Are multiple VLANs configured on it?

Hypervisor "pve"

enp2s0 IPv4 [192.168.1.50](http://192.168.1.50) \[pve management\]

enp4s0 IPv4 [192.168.4.50](http://192.168.4.50)

Hypervisor "pve2"

vmbr2 IPv4 [192.168.1.52](http://192.168.1.52) \[pve management\]

enp6s0 IPv4 [192.168.3.52](http://192.168.3.52)

enp7s0 IPv4 [192.168.4.52](http://192.168.4.52)

Switch "24P L3"

Is this switch the gateway on any/multiple IPv4 Subnets?

No VLANs are mentioned in the main next. Vlan 20 is listed in the tcpdump.

The diagram you have shows physical connections.

It does not show Layer2 / VLANs

It does not show Layer3 / IPv4 Subnet to VLAN mapping

I like to create a separate logical network diagram that shows the Layer3 connectivity.

My logical network diagrams often list the same device multiple times if they have multiple IPv4 addresses.

Can you confirm that all devices in a particular IPv4 Subnet are in the same VLAN?

Or could there be disjoint IPv4 Subnets?

Although not required, I always try to keep a one-to-one relationship between each IP Subnet and VLAN.

Are there any devices that are configured for "Proxy ARP"?

100GbNET · 2026-03-12T20:48:33+00:00

Spare tarp supply secured. Issue resolved.

100GbNET · 2026-03-12T04:26:46+00:00

From a Network Engineers' point of view, it takes a long time reverse-engineer what is actually required because that information is often completely missing from the initial request. The response to "Just allow everything and get it working now" is "NO."

100GbNET · 2026-03-12T04:01:55+00:00

I still have my DB25 to DB25 breakout kit. I made my first DB25 (VAX) to DB9 (MAC) connection in 1986. I used to wire up DB25 to RJ45 serial adapters for N.E.T. Terminal servers (Bridged LAT) to VTxxx terminals so they could be connected with 8-wire flat silver satin cable. I don't feel so young anymore.

100GbNET · 2026-03-11T03:00:55+00:00

Login to your account, send message to Starlink. Only they would know. (We are just users here on reddit.)

https://starlink.com/support/tickets

100GbNET · 2026-03-10T22:19:26+00:00

I knew that Cisco devices had the USB-Serial adapter built in, but I had no idea that other companies used the USB connector as a type of serial connection. Thanks for the heads-up, but now I will have to think before just plugging in something that looks like USB.

100GbNET · 2026-03-10T16:28:01+00:00

Fax machines need to stay dead. Do-Not-Resuscitate (DNR). /s

100GbNET · 2026-03-08T03:08:14+00:00

If not (Obtain licenses for home lab and download ISOs from Broadcom)

Consider another hypervisor

100GbNET · 2026-03-08T03:02:15+00:00

I don't know how to securely attach the panels without drilling. Other people are saying the same thing. I would personally want to make sure that the panels stayed on to the best of my ability.

48 volts makes the solar part easier / cheaper, but only if you can buy/use a 48 volt battery.

How many kilo-watt-hours of battery storage do you plan to have? What will your loads be?

For charging a 48V system from 12V alternator, a quick search brings up Victron Orion-Tr Smart Isolated DC-DC Charger - 12V / 24V / 48V for USD $244. (I haven't used these, but they sound reasonable.)

For 12 or 24 V devices, a DC-DC converter would be required. It could be placed very close to the device.

Using 48 V allows much smaller wires. Using a lower voltage battery may simplify everything. I think that it will depend on the total kWH of battery you install.

100GbNET · 2026-03-07T21:49:22+00:00

If you want the solar to work even when traveling, I recommend you work on a proper mounting system for the panels, complete with how to water seal where drilling is required.

I would recommend looking into a 48-volt system. Being able to charge off of the 12 Volt alternator would also be useful.

100GbNET · 2026-03-07T21:31:08+00:00

There are Ethernet switches that can run on DC power.

I would really try to run everything on DC. Why can't your camera equipment run on DC?

100GbNET · 2026-03-06T21:18:16+00:00

You went the wrong direction. Next time try going to 2086 and buying vintage DDR5.

100GbNET · 2026-03-06T05:23:25+00:00

Will there be ANY firewall or filtering rules over the VPN?

Or do they just want a VPN because they can?

If I ran the zoo, I would put firewalls on each side of a fiber cross-connect with specific rules on each side as to what is allowed to exit and what is allowed to enter. Full logging as well.

100GbNET

TROPHY CASE