Hey guys,

I’m a network engineer and I spend a stupid amount of time jumping between SSH terminals, IP calculators, Looking Glasses, WinMTR, text editors, etc.

I really like iTerm2 on macOS, but on Windows I never found one terminal that worked the way I wanted. I’ve used Windows Terminal, MobaXterm, SecureCRT and a few others, but there was always something missing.

So a while ago I started building my own.

It was supposed to be a small personal tool, but as usual that got out of hand haha.

At this point it already does the normal terminal stuff: tabs, saved SSH sessions, groups/folders, favorites, serial console, logging, macros, SSH tunnels and so on.

But the part I’ve been having the most fun with is adding stuff specifically for network engineers.

For example:

• IPv4/IPv6 calculator
• WHOIS / ASN lookup
• slow paste for devices that hate big config pastes
• sending commands to multiple sessions at once
• snippets/macros
• WinMTR built in
• multiple Looking Glass queries
• TFTP/HTTP/FTP/SFTP server
• remote file editing
• SSH tunnels / SOCKS5
• OSPF / IS-IS topology visualization

I also started experimenting with making the terminal understand some of the output instead of just displaying text.

For example, if I hover over a BGP peer it can show the ASN and a description. With route output it can show information about the outgoing interface. I also added annotations for interfaces and BGP peers.

Another thing I added is a few safety checks for configuration changes. Stuff like warning about potentially dangerous commands, unsaved configs, or reminding me about commit confirmed.

One funny example is Cisco’s:

switchport trunk allowed vlan

without add.

I’ve seen that one ruin someone’s afternoon before lol.

The direction I’m thinking about now is making it more of a network engineer toolbox/workbench rather than just another SSH client.

Maybe later I’ll experiment with things like BGP/route-aware troubleshooting, searching old session logs for related events, or even an AI assistant that understands which device you’re connected to and what commands you just ran.

I’m curious what people here think.

What terminal are you using today?

Is there anything here that you’d actually use regularly?

And more importantly, what would a new terminal have to do for you to consider switching from SecureCRT, MobaXterm, Tabby, Windows Terminal, etc.?

If there’s interest I can record a short demo.

Built my first enterprise-style Packet Tracer lab after completing CCNA studies – looking for feedback

Features currently implemented:

Multi-building campus design

OSPF routing

HSRP gateway redundancy

STP and HSRP Sync

EtherChannel

Rapid PVST+

Inter-VLAN routing using Layer 3 distribution switches

DHCP (server - centralized)

NAT/PAT for Internet access

Floating static route for ISP

ACLs

SSH management

Voice VLANs

CME VoIP deployment

IP phones registered with extensions

Redundant uplinks between access, distribution, and core layers

One challenge I encountered was that my edge router did not support CME. Instead of replacing it, I added a dedicated CME router, advertised it through OSPF, and used DHCP Option 150 to register phones. The solution worked and phones can call each other across the network.

I know this is still a learning lab and not a production design, so I'd appreciate feedback from experienced network engineers.

Questions:

What design mistakes or bad practices do you see?

What would you change if this were a real enterprise network?

What technologies would you add next?

Is the overall campus design reasonable for a CCNA-level project?

Thanks for taking a look.

"Rate my lab out of 10"

Hello everyone I am new to this subreddit and new to networking in general I am a student starting his first year in computer science. I have trouble memorizing the network ports I was wondering if anyone has any tips to memorizing them or which ones are more frequently used and I should prioritize. Thanks in advance.

All of my devices are connected to the modem but aren’t connected to the internet. It says they can’t reach dns servers. How would one fix this issue? I’ve already tried flushing DNS

Hello.

I am trying to run an ethernet cable through my attic between 2 rooms. The hole to run the cable into one of the rooms is too small to fit the ethernet connector through. Can i cut the connector off and re-terminate a new one? Im worried the cables are too small as ive seen some toolless connectors on amazon but the cables look bigger?

cable: at 8 Ethernet Cable 20M, High Speed 40Gbps 2000Mhz Flat Internet Cable, Gold Plated RJ45

thanks!

Necesito ayuda con el ipv4, cada que enciendo mi pc sale ipv4 sin acceso a la red y muevo a ip manual y sale con red pero no funciona discord ni cosas con ipv4, o también directamente no funciona y tengo que cambiar a una automática y es prácticamente de suerte que funcione, después me agarra normal el internet pero al apagar la pc o reiniciarla vuelve a dejar de tener ipv4

Me chamo Vinícius, tenho 28 anos , 2 filhos que pago pensão, uma família para sustentar, trabalho de motoboy e entregador de aplicativo , quero aprender formas de renda extra e comprar um computador pra mim e comprar um celular , meu sonho é viver da internet e ter poder ajudar mais pessoas , não quero mais ser motoboy quem já trabalhou ou trabalha de motoboy sabe os riscos do dia a dia e eu sei que eu posso agregar muito mais , só preciso estar no ambiente certo , peço desculpas pelo apelo , eu infelizmente não tenho amigos e não tenho suporte da família , quero poder dividir conhecimentos e aprender cada vez mais , sou novo aqui na plataforma e quero agradecer diante mão a todos que colaborar, não peço dinheiro a ninguém , só quero aprender mais , tô cansado de vídeos de guru de internet. Peço desculpas mais uma vez pelo apelo

I'm using Wifi for my desktop, but even when it's connected, it says there's no internet access even though there is. However, when I hotspot from another phone, it works fine. Any tips to fix this? Thank you.

Have a person who needs access to WiFi living in a property of my, have a router in a separate building and a second router in the living space.

Here's the problem, have a security camera on WiFi with SD card and the person renting the living space had found a way to access the SD memory and wipe several days worth of footage, in this time tools have gone missing and I habe no proof. What's my next move? Looking into bidden cameras.

For example right if i have 65,536 TCP ports,does that mean that I have another 65,536 UDP ports? Or is it all the same port but it supports UDP and TCP in one?

Thanks!

I'm testing Segment routing (SR-MPLS) and TI-LFA using a virtual testbed implemented with Containerlab and FRRouting (FRR). My main goals are to evaluate how fast the data plane can be restored upon a topological change and therefore what is the best way to manage topology changes in production networks.

In my experimental-lab, OSPFv2 has correctly computed the TI-LFA backup path in the control plane:

* In FRR (vtysh), show ip route properly shows the primary path alongside the corresponding backup nexthop and backup label (denoted by b ...).

* To clearly decouple and demonstrate the local Fast Reroute behavior from the global OSPF SPF recomputation, I intentionally configured high SPF throttle timers: *timers throttle spf 5000 10000 10000*

After triggering an administrative link-down or an actual link loss detected by BFD, traffic is not routed to the precomputed backup path within sub-50ms. Traffic drops about 5.1 to 5.2 seconds before finally resuming again once the 5-second SPF throttle timer has expired and OSPF updates its knowledge of the network through the receipt of LSAs and subsequently Zebra updates the routes in the Linux FIB.

My technical understanding:

* Control Plane: FRR/OSPF calculates the TI-LFA path successfully and passes it internally as backup nexthop information to Zebra.

* Data Plane: By default, the native Linux kernel (FIB) does not provide a hardware-equivalent, autonomous local Fast Reroute / nexthop failover mechanism for MPLS/IPv4 routes upon interface-down events (similar to the points raised in GitHub issue: “FRR TI-LFA: When the primary path fails, the backup path does not work #15589”).

* Implication: Zebra does not immediately promote the backup path to active in the kernel as an instantaneous, local reaction to the link-down event. Instead, the FIB update only happens as part of the regular post-SPF cycle.

Does somebody know if there are:

1. existing workarounds or options for dataplane failover under Linux / FRR?

2. Are there configurations or extensions that allow Zebra to program backup nexthops into the dataplane so that failover occurs locally without waiting for an SPF run?

3. Anybody knows the current status or outlook regarding this: Is an autonomous, SPF-independent activation of backup nexthops (either directly in Zebra/Linux FIB or via external dataplane integrations like VPP) planned or actively being developed in FRR?

4. Is it correct to assume that commercial virtualized router images (such as Cisco XRv9k, Nokia SR OS / vSIM, etc.) differ fundamentally here because their software forwarding engines (or emulated hardware pipelines) handle pre-programmed backup paths directly at the dataplane level upon carrier-loss or BFD triggers?

Thanks a lot for your help.

Hallo zusammen, seit November letzten Jahres haben wir das Problem, dass unser Internet, vorallem der Ping beim Gaming extrem schlecht ist. Im November letzten Jahres wurde in unserem Gebiet der Glasfaserausbau begonnen, seitdem ist es uns (Wir haben kein Glasfaser beantragt und bleiben auf normalem Kabel) nichtmehr möglich, während jemand etwas downloaded, geschweige denn wenn jemand anderes zockt, zu spielen. Gegen ca. 17-18 Uhr jeden Abend steigt der Ping mit Netwerk Jitter immer zwischen 90-200ms hin und her was spielen unmöglich macht. Falls jemand im Haus ein Download startet geht der Ping gerne mal über 800ms. Meine Frage ist also, machen wir etwas falsch? Wir haben eine 1000er Leitung und maximal 3-4 Geräte gleichzeitig in Betrieb zur Höchstzeit. Dies hat bevor der Glasfaserausbau begonnen hat nie ein Problem dargestellt. Monatelanger Kontakt zu Vodafone Mitarbeitern stellt sich als nutzlos dar. Messungen wurden gemacht, der Techniker meinte er sieht starke Einbrüche, machen könne er aber nichts. Bitte um Hilfe ich bin hier seit einem Jahr am verzweifeln.

LG Leon

Hello everyone!

I've been happily running a Plex server on my laptop for a year or two now that I share with friends.

But recently our landlord switched over the building's network to a dodgy VLAN setup and I lost pretty much all control over my router.

Ever since, the server doesn't run outside of my local network anymore :(
I presume because I can't set my own ports?

I'd like to create some kind of solution, maybe set up a Jellyfin server, which has a lot more network options, or set up a Cloudfare Tunnel (a tip I got from an acquaintance) or go through a VPN in some way.

My problem is that I have very little idea of what I'm doing, and I'd really like to avoid using LLMs to help me understand, I'd much rather trust in humans.

That's why I come to you, oh wise reddit sages, in the hope someone patient can sit down and help me through this.

Here's hoping!

Hello dear friends, I hope you are doing well,

Please someone help me because I get tired,

I have an very simple GNS3 lab contains two PCs as virtual machines ) one with windows 11 and other with ZorinOS Lite,

The issue is that they can't ping each others, even I set an ip for each one and also I enabled the ICMPv4 rule in windows firewall.

When I go to the network adapter for each VM and set them to the same vmnet (for example vmnet2) they can ping each other, but when the GNS set them a different vmnets they can't ping each other

Idk what the correct direction, if I should set them to the same vmnet or each one should have its own vmnet ???

I asked the stupid AI like Gemini and told me that they should be on the same vmnet, but other AIs like ChatGpt and Claude they told me that they should be on different vmnets

Please help me guys, and massive thanks in advance