benjojo.co.uk

benjojo posted 09 Mar 2026 23:21 +0000

EMF-IX Returns

EMF-IX, the #emfcamp / #emfcamp2026 internet exchange will be returning for EMF 2026.

Complete with our best switch yet (the "no cost spared" Juniper LAN) this will be the best EMF-IX yet, run a personal network or similar? Reserve your (in person) port today: https://emf-ix.benjojo.co.uk/

This year the EMF Camp network itself will be peering on the exchange as well!

A photo of a flight case with some network kit in it, and some small computers balenced on top, the text says "EMF-IX 2026 is back"

xssfox@cloudisland.n.. replied 10 Mar 2026 02:52 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/418q624PbDShr9T4dw

@benjojo I want to see the rest of the loopback sign

benjojo replied 10 Mar 2026 10:05 +0000
in reply to: https://cloudisland.nz/users/xssfox/statuses/116202612289022410

@xssfox here you go! It's based off a sign on a LINX cabinet I saw once in a data centre

xssfox@cloudisland.n.. replied 10 Mar 2026 10:11 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/F6Sg1h2qtW625p59Q1

@benjojo

the power cable "these are not made, they should never be made" image which shows a double ended power cable, but instead fibre loopbacks are displayed in the cross

benjojo replied 10 Mar 2026 10:11 +0000
in reply to: https://cloudisland.nz/users/xssfox/statuses/116204337645890107

@xssfox god I wish

momo@chaos.social replied 10 Mar 2026 19:07 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/5124qXp3p627N4fGw6

@benjojo Remind me to give you one of these cursed things I accidentally had produced a few years ago.

manawyrm@chaos.socia.. replied 10 Mar 2026 19:31 +0000
in reply to: https://chaos.social/users/momo/statuses/116206444440559631

@momo @benjojo "accidentally had produced"
lol, i want to hear the story behind that :D

momo@chaos.social replied 10 Mar 2026 19:56 +0000
in reply to: https://chaos.social/users/manawyrm/statuses/116206542194740580

@manawyrm @benjojo well, ordered a bunch of lc/pc <> lc/pc, lc/apc <> lc/apc and lc/pc <> lc/apc cables, copy&pasted the spreadsheets for each type and didn't think too much. and the chinese vendor did what I asked.

benjojo replied 10 Mar 2026 20:00 +0000
in reply to: https://chaos.social/users/momo/statuses/116206444440559631

@momo haha oh my god that's subtle and cursed

xssfox@cloudisland.n.. replied 10 Mar 2026 10:14 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/5124qXp3p627N4fGw6

@benjojo need spanning tree but in peg dhcp style

ingram@mastodon.soci.. replied 10 Mar 2026 11:27 +0000
in reply to: https://cloudisland.nz/users/xssfox/statuses/116204350061579270

@xssfox @benjojo And goodness help the 'experts' than disabled spanning tree because they couldn't get RSTP to work with VLANs (hint, SMTP required). No big deal, just the primary protection for a 66kV substation and a gas compression station.

benjojo replied 10 Mar 2026 12:21 +0000
in reply to: https://mastodon.social/users/ingram/statuses/116204637225326315

@ingram @xssfox I sure do love safety/life critical Ethernet designs

ingram@mastodon.soci.. replied 10 Mar 2026 19:20 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/DLcLlN67qxchjY8X9J

@benjojo @xssfox Done right, Ethernet is great. A380 and B787 avionics are Ethernet based with strict traffic management and redundant paths. PRP and HSR provide great resilience for industrial applications.

But geez, when you have Muppets that have just rolled their RS485 design to Ethernet with no thought it's very very bad. LAN doesn't work? Disable the firewall. Still doesn't work? Turn the router into a switch. Yeah. I quit that job.

sully@splodge.fluff... replied 10 Mar 2026 07:27 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/418q624PbDShr9T4dw

@benjojo You have a EX3400 that's still in support? Flashy.

benjojo replied 10 Mar 2026 10:07 +0000
in reply to: https://splodge.fluff.org/users/sully/statuses/116203693258131576

@sully nope! As the website says

Our state-of-the-art Juniper EX3400 stands tall, undefeated, unpatched, and unreplicated. Redundancy is for cowards.

flangey@chaos.social replied 10 Mar 2026 07:50 +0000
in reply to: https://splodge.fluff.org/users/sully/statuses/116203693258131576

@sully @benjojo TSA regs are a bitch

sam@cablespaghetti.d.. replied 10 Mar 2026 07:51 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/418q624PbDShr9T4dw

@benjojo@benjojo.co.uk This ridiculous thing is very much up my street. However do I understand that I would have to somehow convince RIPE to assign me an ASN? If so do you have any tips for doing this on the cheap?

benjojo replied 10 Mar 2026 11:11 +0000
in reply to: https://cablespaghetti.dev/fedi/sam/p/1773129075.699104

@sam I'll be honest with you here, this is probably not the best way to be introduced into internet carrier networking :)

If you're interested in the subject in general than there are plenty of resources around, I would personally recommend to get started first with dn42.dev so you can get a basic grip on inter-network BGP (and it's totally fine to stop there!), and if you want to take that further (assuming you have a use case for running a AS/IP space) you can find a RIPE ASN sponsor and the relevant providers to rent you servers with BGP capabilities and IP space.

992jo@chaos.social replied 10 Mar 2026 08:54 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/418q624PbDShr9T4dw

@benjojo

> IPv4 and IPv6 only: No IPX, no AppleTalk, no DECnet. We tolerate no nostalgia.

How does IPv4 and "we tolerate no nostalgia" fit together?

benjojo replied 10 Mar 2026 10:06 +0000
in reply to: https://chaos.social/users/992jo/statuses/116204035416802385

@992jo IPv4 is still actively used at least :)

growse@hachyderm.io replied 10 Mar 2026 11:13 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/418q624PbDShr9T4dw

@benjojo hi! I've never been to emfcamp before, but hoping to come this time.

Can I bring a smolDNS host to advertise my ipv6 subnet on?

benjojo replied 10 Mar 2026 12:21 +0000
in reply to: https://hachyderm.io/users/growse/statuses/116204590024455909

@growse Hmm, keep trying, I got that once and I've never been able to reproduce it...

benjojo replied 10 Mar 2026 13:55 +0000
in reply to: https://hachyderm.io/users/growse/statuses/116205011817743304

@growse It seems like you forgot to use the dropbox menu to select what kind of connection you wanted :) I've made the error more obvious now!

theod@social.treehou.. replied 10 Mar 2026 12:22 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/418q624PbDShr9T4dw

@benjojo I love the "Why EMF-IX?" Part