What Will A Switch Do If The Destination For A Frame Is Not Known?

What does a switch do with a frame with an unknown destination MAC address?

When a switch doesn’t have the destination mac address in its mac address table, it floods the frame to all other port except the receiving port..

How do Ethernet switches know where to send the frames they receive?

The frame is sent onto the network where an Ethernet switch checks the destination address of the frame against a MAC lookup table in its memory. The lookup table tells the switch which physical port, i.e., RJ45 port, is associated with the device whose MAC address matches destination address of the frame.

What are the five steps of a switch’s operation?

Here are five steps to select the right basic switch for your application.Step 1: Understand how a switch’s physical size impacts other characteristics. … Step 2: Know your electrical requirements. … Step 3: Consider environmental conditions. … Step 4: Determine operational life requirements.More items…•

Does Ethernet use IP address?

While IP is the only addressing protocol used by Ethernet, Ethernet networks use two types of data transmission: TCP and UDP.

Are frames and packets the same?

A frame is the chunk of data sent as a unit over the data link (Ethernet, ATM). A packet is the chunk of data sent as a unit over the layer above it (IP). If the data link is made specifically for IP, as Ethernet and WiFi are, these will be the same size and packets will correspond to frames.

Do switches use IP addresses?

But since the switch does not have the capability to assign IP addresses, the computers connected to it will not be able to communicate with each other. They will get an Automatic Private IP Address (APIPA). You need to assign a static IP address to your computers.

Does it matter which port I use on a switch?

It does not make any difference what port you use to connect to the internet. … Please note you need multiple ethernet cables, one to connect the switch to the internet, which would be either a router or another ethernet connection, and the additional cables will run from the switch to each device you are using.

Under which two circumstances will a switch flood a frame?

Explanation: A switch will flood a frame out of every port, except the one that the frame was received from, under two circumstances. Either the frame has the broadcast address as the destination address, or the destination address is unknown to the switch.

What do Layer 2 switches use to decide where to forward a received frame?

What does a Layer 2 switch use to decide where to forward a received frame? Explanation: When a frame is received, the switch looks at the destination hardware address and finds the interface if it is in its MAC address table.

Do Ethernet switches work?

Ethernet switches connect essential devices such as laptops, computers and servers to a local area network (LAN). They can be an essential piece of hardware in networking for organizations of all sizes, as multiple Ethernet ports allow for quicker connectivity and access across a multitude of devices.

What will the switch do with the frame?

What will the switch do with the frame? The switch will forward the frame to all ports except port 4. … When a device is sending data to another device on a remote network, the Ethernet frame is sent to the MAC address of the default gateway.

What field does a switch use to forward a frame?

To forward the frame, the switch examines the destination MAC address and compares it to addresses found in the MAC address table.

When a NIC is in promiscuous mode it will process only the frames?

When a NIC is in “promiscuous” mode, it will process only the frames in which the destination MAC address matches its own MAC address. Routers do not forward broadcast packets.

How does a switch use store and forward?

Store-and-forward switching means that the LAN switch copies each complete frame into the switch memory buffers and computes a cyclic redundancy check (CRC) for errors. … If the frame is error free, the switch forwards the frame out the appropriate interface port, as illustrated in Figure 6-7.

What are two methods for switching data between ports on a switch choose two?

Local Area Network (LAN) Switches support different Switching Methods. Important Switching Methods are store and forward, cut-through and fragment-free. Switching Methods determine how a switch receives, processes, and forwards a Layer 2 Ethernet frame.