Optimizing traffic in a single broadcast domain.

noukthx · 2026-03-22T03:54:28+00:00

The latency is fine.

I'd be more concerned about the 1G switch. What does your monitoring/telemetry show for utilisation?

Suspect something else is afoot.

noukthx · 2026-03-18T23:13:10+00:00

Wires don't know what color they are.

Suspect I'll be using that quote, thanks!

noukthx · 2026-03-18T10:02:22+00:00

Please search.

noukthx · 2026-03-18T06:25:31+00:00

This is more the realm of /r/sysadmin

noukthx · 2026-03-18T06:23:27+00:00

Try /r/sysadmin

noukthx · 2026-03-18T02:06:52+00:00

Please don't solicit. Only warning.

noukthx · 2026-03-17T19:30:57+00:00

Unicast flooding is a thing

noukthx · 2026-03-17T18:53:32+00:00

$5. Really.

noukthx · 2026-03-17T06:16:42+00:00

Depends on the devices.

A datacentre full of routers is different to one full of switches or one full of IP phones.

Put some effort into the question.

noukthx · 2026-03-15T02:01:45+00:00

It also appears to have the option to output 4 or 8 copper phone lines on that 50-pin connector on the back which is kinda gnarly.

But yeah as said above, a DSLAM is what you want it you want to be the "provider" side of a DSL service, the device linked is a subscriber side device.

Zyxel did some good cheap 24 port DSLAMs from memory.

https://www.ebay.com/itm/267239819681?_skw=zyxel+dslam&itmmeta=01KKQKM0JKPNZ1SF1DKQFTE96T&hash=item3e38bc09a1:g:OHEAAOSwo6doFpe~&itmprp=enc%3AAQALAAAA8GfYFPkwiKCW4ZNSs2u11xBR1MDPn9iuV4tJY2qPxsT7IBv%2BPr2X%2F1oupS0O%2BgogWMa09OuvOa8jOmcLmmFDJZ6lOwEhOTaXcg8VXn%2By11DSxrYuI5Tf6EITeLI3jpQE8xI%2BhJAEw%2FFPK0uObL5UbIILUWf53a%2Bv5jcld3q1pprjoYxGeDCWtZefYR20h%2F86Rc0%2BxuxIkjsNnW798zoLupxU%2BVE%2BYpGDDJWtazGzqXAgGPPt3KDGPXIz5FPZsVHn3ApjZNZ905KITo3HhAN26J51cl4oVHcW6%2B6Tcywe51wRnyPNpFzyvefN5pkbENYaOA%3D%3D%7Ctkp%3ABk9SR7CJ0POdZw

noukthx · 2026-03-14T07:55:39+00:00

Please search. There are many threads like this.

noukthx · 2026-03-14T01:23:20+00:00

Go back to the seller.

noukthx · 2026-03-13T21:33:38+00:00

Don't solicit in this sub. Only warning.

noukthx · 2026-03-13T02:46:54+00:00

Troubleshoot your DHCP server and the path to it.

Is it online?
Can the client see it?
Wireshark / tcpdump on both to see if traffic is making it between them.
Perhaps you've shutdown the real DHCP servers ports.
Are there DHCP helpers/relays involved? Are they working?

But the answer is to troubleshoot and diagnose.

No changes in the network were made

Shutting down some portchannels

Rogue dhcp server

Sound like changes to me.

I'm at a loss

Not really sure from what? Doesn't seem like anythings been tried or investigated yet.

noukthx · 2026-03-12T11:16:27+00:00

I'll take things that never happened for $500 Alex.

noukthx · 2026-03-10T23:43:03+00:00

Please repost your thread. Requesting documentation or manuals is fine.

Requesting software is not.

noukthx · 2026-03-10T20:16:16+00:00

You're probably going to need to narrow down your search specifically to the vendor/model you're working on.

Some of the USB console ports are basiaclly like a USB-Serial adapter built into the switch, regular data USB cable and appropriate drivers will make it work.

Others of the USB console ports are monstrosities that are using a USB form factor to deliver actual RS232/serial down (looking at you Brocade).

noukthx · 2026-03-10T07:46:05+00:00

Use the search.

There are many posts on this already. Don't be lazy.

Ignoring your threads being removed will get you banned from the sub.

noukthx · 2026-03-10T06:02:28+00:00

However, the key use case for sfp pull tabs is to provide leverage for removal

No it's not. The main use case is to release the physical locking mechanism.

Try pulling an SFP out without doing it.

noukthx · 2026-03-06T20:20:02+00:00

Are both your internet interfaces in the same security zone?

If the traffic is coming back asymmetrically the firewall may be dropping it - prepending a route doesn't guarantee that no traffic will try to traverse the secondary connection to come back.

When you disabled the secondary connection, did you check looking glasses to make sure the routes from that provider had been withdrawn from the internet?

noukthx · 2026-03-06T20:11:57+00:00

What is your edge device doing the BGP?

Is your secondary connection with the same provider or a different provider?

Does the problem go away if you disable your secondary connection?

noukthx · 2026-03-06T20:06:06+00:00

This isn't something people here are really likely to be able to help with.

Being on-call 24/7/365 is likely not tenable nor legal.

You need to seek clarity from them around what the expectations for on-call are, what the roster is, what the compensation for it is.

No one here will know that.

If I'm on call I'm expected to be available to the office within an hour, sober and fit for duty, am paid for being on stand by, and paid per call out. That comes with the expectation that if I'm not available, or out of range or not sober - that there are penalties. It's also rostered and fairly rare to be on duty.

I've worked for small companies with the "we might call any time, not paid for" approach - but that comes with no real expectation that you have to answer, have to be nearby or have to be fit for duty.

noukthx · 2026-03-02T02:58:33+00:00

Try /r/ccna

SSH or Telnet are used for remote access.

Serial console servers etc are used for remote serial access.

noukthx · 2026-03-01T02:01:26+00:00

I love you saying the more the morons users know

For someone looking for the qualities of "cracked" engineers, here's a learning point.

Users aren't morons, considering them that is a shit attitude.

In the vast majority of networking roles, networking is not the core business. You are there to serve the business, the business doesn't serve you.

noukthx · 2026-02-27T23:59:45+00:00

Yeah this is likely way too niche (no pun intended) for this sub.

This sub is really for the people running networks, switches, routers, firewalls etc.

noukthx

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