From 94290c8dd779df3dd3870fa14a1e124d76785386 Mon Sep 17 00:00:00 2001 From: Dimitri Staessens Date: Sun, 4 Jul 2021 16:53:35 +0200 Subject: content: Add paragraph on ASs defining IP topology --- content/en/docs/Concepts/ouroboros-model.md | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/content/en/docs/Concepts/ouroboros-model.md b/content/en/docs/Concepts/ouroboros-model.md index fe9881e..3a45f16 100644 --- a/content/en/docs/Concepts/ouroboros-model.md +++ b/content/en/docs/Concepts/ouroboros-model.md @@ -447,7 +447,7 @@ the blue routing area). #### What are addresses? Let's end this discussion with how all this relates to IP addressing -and CIDR. Each "IP" host has 32 forwarding elements with a straight +and CIDR. Each "IPv4" host has 32 forwarding elements with a straight parent-child relationship between them [^12]. The rules above imply that there can be only one peering relationship between two nodes. The subnet mask actually acts as a sort of short-hand notation, showing @@ -469,6 +469,17 @@ certain frequency), and then thinking that we either have to name the box or the holes/antennas: the answer is _neither_. I will come back to this when discussing multi-homing. +One additional thing is that in the current IP Internet, the layout of +the routing areas is predominantly administratively defined and +structured into so-called Autonomous Systems (ASs) that each receive a +chunk of the available IP address space, with BGP used to disseminate +routes between them. The layout and peering relationship between these +ASs is not the most optimal for the layout of the Internet. Decoupling +the network addressing within an AS from the addressing and structure +of an overlaying unicast layer, and how to disseminate routes in that +overlay unicast layer is an interesting topic that mandates more +study. + [UNDER CONSTRUCTION] [^1]: In the paper we call these elements _data transfer protocol -- cgit v1.2.3