> - Currently, the circuit where the user connects is arbitrarily decided by the demo user. In a real system with thousands of circuits, it'd be very difficult to properly assess which circuit the customer might connect to. When adding a new customer to a service, how does the operator decide, based on customer's location, which circuit to provide the service to ?
I'm not exactly sure what you're asking, but port allocation is, depending on the ISP's deployment model, either going to be fixed at the time the infrastructure was built, or whoever is doing the last metre install will choose a random available port on the switch. The subscriber will be assigned to that port in the RADIUS or equivalent database, and the BNG will query the subscriber based on DHCP Option 82 port information added by the switch. You could also map the subscriber based on MAC address, but this doesn't really work unless you don't support customer provided equipment on their end.
My access edge is injecting DHCP Option 82, and I'm mapping customers based on (bng_id + circuit_id + remote_id ). Say, a customer on Oakwood Drive ABC wants a service. What is the process of finding the right circuit between storing the customer's desired address and finding the best circuit to connect it to? Since, as mentioned in this thread, having connected to a wrong circuit can cause network noise for other customers too, how is the "cleanest" circuit + port assigned to a customer in a location ?
Forgive my ignorance, this isn't my strong suit. Am I correct in understanding that this is mostly a simulation layer for the actual physical network, but that you're mostly(?) running off-the-shelf software on top? So this is running the same software that you'd use for a real ISP network, just without having to actually provision all the hardare? Or is part of the actual network management custom as well?
Hello. Containerlab gives me the virtual network topology ( links through veth pairs, containers etc.). The actual BNG's Control plane ( authentication, authorization, session handling, traffic shaping, events streaming etc. ) is written by me. So it's less running off-the-shelf software running on virtualized hardware, and more writing the software and running it on a virtualized hardware.
At some point, I did use Nokia SR Linux as my access node + relay, but had issues with configuration and Option 82. Later, I wrote one myself.
I recently found out about Apache Netbox that would act as the authoritative source of truth for the network topology and replace majority of aether.config.yaml. In Splynx, I did not see any mention of an external solution. It seems they have their own stack for that.
A better and UX-friendly implementation would have been Netbox + aether.config.yaml -> configuration pipeline -> topology.yaml + <other generated files>.
this looks pretty interesting! i plan to take a closer look after work, but thought i would mention it now: it may be worth a look through the NANOG (north american network operators group) archives (https://nanog.org/nanog-mailing-list/list-archives/) for information around your question if you havent, and/or posting your question to the NANOG mailing list. there are many very friendly people who have experience running ISPs of all sizes.
(or whichever operators group best fits your area. i only subscribe to NANOG, so cant speak to the activity/friendliness of the other groups. you can find a pretty comprehensive list here: https://nanog.org/resources/organizations-our-community/)
Subscribed! I am very new to things here since it's barely been a 1.5 months since I touched this area, so many of my questions have probably been answered. I will search around and post a question if can't find an answer.
I plan to take all the feedback I can this week, and work on them on spring break.
I feel like you were done dirty. When I was in grad school 12 years ago, our networking classes used mininet to simulate networks on a single host. It's mostly meant for developing SDN systems, but probably would have met your needs and supports way more.
On the other hand, building even a tiny subset but doing it yourself from scratch is a great way to learn. I made a very poor man's VM image builder for HyperV years back because Packer didn't have a builder for it at the time and that was a pretty interesting experience. Finally grokked the Windows object model and even though I still don't use it, I at least no longer jeer at PowerShell.
I'm interested in the answer to your question, too, but as a customer of an ISP. I don't work for one. I was the first owner of my house and when they hooked me into their network, whoever did messed up my neighbors badly, putting them on the wrong circuit and bleeding noise into adjacent neighborhoods. For three years, complaint calls would get our network cut by third-party contractors with no warning, then we'd have to call and get it reconnected. I don't know how they're supposed to do it, but know it can cause quite a mess when they do it wrong.
Mininet did help me a lot during the initial phases. The main reason I made the switch to containernet(mininet-fork with containers ) and then to containerlab was because I wanted to run an actual NOS image as part of my topology. That was really what pushed me to try and switch to other options.
Yup, its a different experience. Sometimes, you end up learning something you never even intended to.
As for the circuit planning, I'd guess that they have circuits map on something like Netbox and using a intermediary system that maps a customer's location to the nearest circuit. Though, I don't know how they handle the optimization side of it to prevent cases like what happened to your neighbour.
I'm not exactly sure what you're asking, but port allocation is, depending on the ISP's deployment model, either going to be fixed at the time the infrastructure was built, or whoever is doing the last metre install will choose a random available port on the switch. The subscriber will be assigned to that port in the RADIUS or equivalent database, and the BNG will query the subscriber based on DHCP Option 82 port information added by the switch. You could also map the subscriber based on MAC address, but this doesn't really work unless you don't support customer provided equipment on their end.
At some point, I did use Nokia SR Linux as my access node + relay, but had issues with configuration and Option 82. Later, I wrote one myself.
A better and UX-friendly implementation would have been Netbox + aether.config.yaml -> configuration pipeline -> topology.yaml + <other generated files>.
(or whichever operators group best fits your area. i only subscribe to NANOG, so cant speak to the activity/friendliness of the other groups. you can find a pretty comprehensive list here: https://nanog.org/resources/organizations-our-community/)
I plan to take all the feedback I can this week, and work on them on spring break.
On the other hand, building even a tiny subset but doing it yourself from scratch is a great way to learn. I made a very poor man's VM image builder for HyperV years back because Packer didn't have a builder for it at the time and that was a pretty interesting experience. Finally grokked the Windows object model and even though I still don't use it, I at least no longer jeer at PowerShell.
I'm interested in the answer to your question, too, but as a customer of an ISP. I don't work for one. I was the first owner of my house and when they hooked me into their network, whoever did messed up my neighbors badly, putting them on the wrong circuit and bleeding noise into adjacent neighborhoods. For three years, complaint calls would get our network cut by third-party contractors with no warning, then we'd have to call and get it reconnected. I don't know how they're supposed to do it, but know it can cause quite a mess when they do it wrong.
Mininet did help me a lot during the initial phases. The main reason I made the switch to containernet(mininet-fork with containers ) and then to containerlab was because I wanted to run an actual NOS image as part of my topology. That was really what pushed me to try and switch to other options.
Yup, its a different experience. Sometimes, you end up learning something you never even intended to.
As for the circuit planning, I'd guess that they have circuits map on something like Netbox and using a intermediary system that maps a customer's location to the nearest circuit. Though, I don't know how they handle the optimization side of it to prevent cases like what happened to your neighbour.