From 5c305ace2b9f6c0d2aaeb2bc7d2e7c6cfd8a7af3 Mon Sep 17 00:00:00 2001
From: Nick Leeman <nick@aterve.nl>
Date: Sat, 6 Nov 2021 14:52:11 +0100
Subject: [PATCH] Vault sync: 2021-11-06 14:52:11

---
 .obsidian/workspace                       |  6 ++---
 School/Analyse/Layers/3. Network Layer.md | 29 +++++++++++++++++++++++
 School/Analyse/Network Hardware.md        | 14 +++++++++--
 3 files changed, 44 insertions(+), 5 deletions(-)

diff --git a/.obsidian/workspace b/.obsidian/workspace
index 2e6d8da..18d944e 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -9,7 +9,7 @@
         "state": {
           "type": "markdown",
           "state": {
-            "file": "School/Analyse/Network Hardware.md",
+            "file": "School/Analyse/Layers/3. Network Layer.md",
             "mode": "source"
           }
         }
@@ -68,7 +68,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "School/Analyse/Network Hardware.md",
+                "file": "School/Analyse/Layers/3. Network Layer.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -87,9 +87,9 @@
   },
   "active": "bc6e8ad9aa0f44c3",
   "lastOpenFiles": [
+    "School/Analyse/Layers/3. Network Layer.md",
     "School/Analyse/Network Hardware.md",
     "School/Analyse/Computer Networks.md",
-    "School/Analyse/Layers/3. Network Layer.md",
     "School/Analyse/Layers/4. Transport Layer.md",
     "School/Analyse/Layers/2. Datalink Layer.md",
     "School/Analyse/Network Types.md",
diff --git a/School/Analyse/Layers/3. Network Layer.md b/School/Analyse/Layers/3. Network Layer.md
index e66a748..a59067e 100644
--- a/School/Analyse/Layers/3. Network Layer.md	
+++ b/School/Analyse/Layers/3. Network Layer.md	
@@ -50,3 +50,32 @@ Network ID is marked as bold.
 - Address:
 			**195.210**.23.14
 			
+## Router
+Router is a member of multiple networks.
+
+![[routers-example.png]]
+
+For each connection to a network a routers uses a network interface card (NIC) and a IP address.
+
+This way a router can have multiple IP addresses.
+
+Each connection is identified by a interface, label or an address.
+
+Example of a routing table:
+![[routing-table.png]]
+
+### Updating router tables
+Routers are responsible for updating routing tables themselves.
+
+When a router detects a change in connections, it immediately informs other routers about it.
+
+Routers use optimum route finding algorithms to update their tables.
+
+Exchanging routing information between routers is done periodically even when there is no change in the network.
+
+The most commonly used routing algorithms are:
+- Distance vector routing (RIP)
+- Link-state Routing (OSPF, IS-IS)
+
+## Addressing problem
+
diff --git a/School/Analyse/Network Hardware.md b/School/Analyse/Network Hardware.md
index 594ffe0..e4ea444 100644
--- a/School/Analyse/Network Hardware.md	
+++ b/School/Analyse/Network Hardware.md	
@@ -35,10 +35,20 @@ Example of a routing table:
 ![[routing-table.png]]
 
 ### Updating router tables
-
 Routers are responsible for updating routing tables themselves.
 
-When a router detects a change in connections, it immedia
+When a router detects a change in connections, it immediately informs other routers about it.
+
+Routers use optimum route finding algorithms to update their tables.
+
+Exchanging routing information between routers is done periodically even when there is no change in the network.
+
+The most commonly used routing algorithms are:
+- Distance vector routing (RIP)
+- Link-state Routing (OSPF, IS-IS)
+
+
+