#ONE SWITCH FOR MAC MAC#
The MAC address table starts out empty, and every time a Switch receives anything, it takes a look at the Source MAC address field of the incoming frame. It uses the Source MAC and the switchport the frame was received on to build an entry in the MAC Address Table. One of the goals of the Switch is to create a MAC Address Table, mapping each of its switchports to the MAC address of the connected devices. Specifically, a Switch will use the Source MAC address and Destination MAC address to make its forwarding decisions.
Switch FunctionsĪ Switch primarily has four functions: Learning, Flooding, Forwarding, and Filtering: Learningīeing a Layer 2 device, a Switch will make all its decisions based upon information found in the L2 Header. We will start by looking at the individual switch functions, and then take a look at an animation which shows their collaborative operation.
It might be worth reviewing that section before proceeding. This article will be the practical application of everything that was discussed when we looked at a Switch as a key player in packet traveling. We will take a look at what happens for communication from Host to Host through a Switch. In this article, we will add a common network device: a switch. In the last article, we looked at everything that happens for two hosts to communicate directly with one another. Use the navigation boxes to view the rest of the articles. This article is a part of a series on Packet Traveling - everything that happens in order to get a packet from here to there.
0 kommentar(er)
