From 9232b8d817d4cd4122947375156fa2fa1e9fba14 Mon Sep 17 00:00:00 2001 From: Jasper Ras Date: Mon, 13 Jan 2025 13:16:06 +0100 Subject: vault backup: 2025-01-13 13:16:06 --- Kast/1736758994 Network switch.md | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 Kast/1736758994 Network switch.md (limited to 'Kast/1736758994 Network switch.md') diff --git a/Kast/1736758994 Network switch.md b/Kast/1736758994 Network switch.md new file mode 100644 index 0000000..2fed693 --- /dev/null +++ b/Kast/1736758994 Network switch.md @@ -0,0 +1,7 @@ +#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