From 9642cd7ae24f0ba79ce5647c709b35ae8f06a285 Mon Sep 17 00:00:00 2001 From: Jasper Ras Date: Sun, 19 Jan 2025 21:14:51 +0100 Subject: vault backup: 2025-01-19 21:14:51 --- 3 Resources/Networking/Switch.md | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 3 Resources/Networking/Switch.md (limited to '3 Resources/Networking/Switch.md') diff --git a/3 Resources/Networking/Switch.md b/3 Resources/Networking/Switch.md new file mode 100644 index 0000000..66f4652 --- /dev/null +++ b/3 Resources/Networking/Switch.md @@ -0,0 +1,10 @@ +--- +tags: + - linux + - networking +--- +A switch keeps a MAC-Address-Table mapping MAC addresses to connected ports. Connected devices that want to communicate learn each others' MAC address via an ARP request. They can then specify the destination MAC address and the switch will do the forwarding to the correct port. + +Broadcast domain: broadcast traffic will be forwarded to all ports except the port the request arrived on. Broadcast traffic will stay within the broadcast domain as routers that receive a broadcast do not forward it to another [[subnet]]. + +> Large layer 2 broadcast domains can cause problems for example a [[broadcast storm]] which can take down the network -- cgit v1.2.3