Timeline for Is it possible to specify a route for a packet to take?
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 7, 2021 at 7:59 | history | edited | CommunityBot | replaced https://tools.ietf.org/html/rfc with https://www.rfc-editor.org/rfc/rfc | |
| Apr 15, 2020 at 5:46 | comment | added | David Schwartz | Source routing conflicts with policy routing and the Internet uses policy routing to ensure that people don't get service they didn't pay for. So you aren't going to find source routing working on the expensive parts of the Internet. If I'm a Comcast customer and Comcast has a crappy path to Google, I might want to route my packets to AT&T and then to Google -- but who paying AT&T to carry a Comcast customer's packets to Google? | |
| Apr 15, 2020 at 2:30 | vote | accept | lpydawa | ||
| Apr 14, 2020 at 4:42 | comment | added | Barmar | It's basically just a list of router IPs. | |
| Apr 14, 2020 at 4:38 | comment | added | lpydawa | Is this all in the forwarding plane? | |
| Apr 14, 2020 at 4:18 | comment | added | lpydawa | @Barmar tldr would be much appreciated :) | |
| Apr 14, 2020 at 4:11 | comment | added | Barmar | Whether it's the complete route depends on whether it's Loose or Strict. | |
| Apr 14, 2020 at 4:10 | comment | added | Barmar | @lpydawa Source routing is what I describe in the answer. The details are in the RFC. | |
| Apr 14, 2020 at 4:06 | comment | added | lpydawa | Is the full complete route specified within the packet and routers receiving the packet know from the packet where to go next? | |
| Apr 14, 2020 at 4:03 | comment | added | lpydawa | @Henrique what is source routinf | |
| Apr 14, 2020 at 3:05 | comment | added | chrylis -cautiouslyoptimistic- | Not only ISP; I've never heard of any router (even in a lab) actually configured for it. It was one of those YAGNI features. | |
| Apr 13, 2020 at 19:18 | comment | added | Henrique | I was surprised nobody mentioned Source Routing, 'till I saw your answer. It is indeed a security issue to enable source routing in private routers (and of course in public ones as well), as stated by many books and papers. Not only because of attacks, but also because you could, by accident, end up with a routing loop. But yeah, source routing is a thing, the IP protocol was designed to do it and, in a controlled environment, you can experiment with it - as long as the routers are yours. | |
| Apr 13, 2020 at 15:19 | history | answered | Barmar | CC BY-SA 4.0 |