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When a switch receives a frame on a port and floods the frame what does it do with the frame?
Wiki User
∙ 11y ago
It forwards it out to all other connected ports
Wiki User
∙ 11y ago
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A switch that is using port-based memory buffering receives two incoming frames on the same port The destination port for the first frame that is received is busy How will the switch handle the seco?
The rest of the frames will be held in the incoming queue until the first frame is served.
A switch receives a frame with a destination MAC address that is currently not in the MAC table What action does the switch perform?
It duplicates the frame to all Ethernet ports, except the port it came from. A switch's MAC table is built not from destination addresses it receives, but by the source MAC addresses. So the frame is broadcast throughout the broadcast domain, until the end device with a matching MAC address responds to the broadcast, thus giving the switch a new source address to add to its MAC table.
Which identifies the VLAN to switch each piece of data to where it belongs?
If a switch receives a frame (a piece of data) from a certain port, it will identify that as belonging to a certain VLAN, because each port is assigned a certain port.In a trunk link, additional data is added to each frame (frame tagging), to identify to which VLAN each frame belongs.
What does a layer 2 switch use to decide where to forward a received frame?
A layer 2 switch uses the MAC address to determine which port to switch the frame out of.
Which two statements describe the operation of an access layer ethernet switch choose two?
The source MAC address within a frame is used by the switch to associate a port with that MAC address. Frames are directed by the switch from one port to another based on the destination MAC address within the frame.
What happens when a frame from a source MAC address different from 00a8d2e4ba27 reaches switch port 015?
The frame is dropped
What does a switch store in its switching table?
The destination mac addressof a frame and the port it was received on.
How an Ethernet switch sends a frame out a single port to a receiver?
The switch learns the MAC address of the device connected to a port during port initialization. It will then send data out the port based upon the destination MAC address as specified the the packet header.
A switch received a frame with a destination mac address that is currently not in the mac table what action does the switch performs?
It will broadcast to every port in the vlan.
A switch will receive the first 64 bytes of a frame before forwarding?
There are actually three options here. Different switches work differently. (1) The switch forward the frame as soon as it knows the destination address. This gives the lowest latency, but more errors. (2) The switch waits until it receives at least 64 bytes. This avoids fragments of less than 64 bytes being accidentally forwarded. (3) The switch stores the entire frame and then resends it. This allows the switch to check the CRC, and reject bad frames. Whatever method it uses, in any case the switch may have to store frames (buffering) if the outgoing port is busy.There are actually three options here. Different switches work differently. (1) The switch forward the frame as soon as it knows the destination address. This gives the lowest latency, but more errors. (2) The switch waits until it receives at least 64 bytes. This avoids fragments of less than 64 bytes being accidentally forwarded. (3) The switch stores the entire frame and then resends it. This allows the switch to check the CRC, and reject bad frames. Whatever method it uses, in any case the switch may have to store frames (buffering) if the outgoing port is busy.There are actually three options here. Different switches work differently. (1) The switch forward the frame as soon as it knows the destination address. This gives the lowest latency, but more errors. (2) The switch waits until it receives at least 64 bytes. This avoids fragments of less than 64 bytes being accidentally forwarded. (3) The switch stores the entire frame and then resends it. This allows the switch to check the CRC, and reject bad frames. Whatever method it uses, in any case the switch may have to store frames (buffering) if the outgoing port is busy.There are actually three options here. Different switches work differently. (1) The switch forward the frame as soon as it knows the destination address. This gives the lowest latency, but more errors. (2) The switch waits until it receives at least 64 bytes. This avoids fragments of less than 64 bytes being accidentally forwarded. (3) The switch stores the entire frame and then resends it. This allows the switch to check the CRC, and reject bad frames. Whatever method it uses, in any case the switch may have to store frames (buffering) if the outgoing port is busy.
What is the primary purpose of encapsulating packets into frames?
Frames contains information used at the data link layer of the OSI model. When your frame arrives at a switch for instance, the switch will read the frame information, as the following information is contained within: Vlan information - your switch can determine what the source vlan is. As the ports on your switch may not all be in the same vlan, the switch needs to know what vlan it needs to send the packet on eg: You have two vlans on the switch. You want to communicate to another computer on another switch and the connection between the switches is a trunk, the sending switch will include the vlan information in the frame so the receiving switch knows where to send the frame when it receives it. This field also contains quality of service information and tells the switch which output queue to use when sending the packet. Mac Address - switches, unlike the old hubs, know what pc is connected to what port, and will send normal traffic between computers only to the destination computer and not broadcast it over all the ports. It builds a mac address table which contains two key pieces of information. The port number and the mac address of the pc connected to that port. As the mac address information is contained in the frame the switch knows what the mac address of the destination pc is. It looks up the information in the mac table and then sends the frame to the port where the destination computer is connected to. Frame type - this information tells the receiving computer what type of frame it is receiving and is two octets long. Frame check sequence - this contains a 4 octet cyclic redundancy check value and is used to check for frame errors or corrupt data.
What is layer 2 switching?
This refers to switching at layer 2 of the OSI reference model, for example, Ethernet. A switch looks at the MAC address of each Ethernet frame ("packet", you might say, but at this level the correct name is "frame"), and if it knows that this MAC address is connected at a certain port, the switch will send the information out ONLY through that port.This refers to switching at layer 2 of the OSI reference model, for example, Ethernet. A switch looks at the MAC address of each Ethernet frame ("packet", you might say, but at this level the correct name is "frame"), and if it knows that this MAC address is connected at a certain port, the switch will send the information out ONLY through that port.This refers to switching at layer 2 of the OSI reference model, for example, Ethernet. A switch looks at the MAC address of each Ethernet frame ("packet", you might say, but at this level the correct name is "frame"), and if it knows that this MAC address is connected at a certain port, the switch will send the information out ONLY through that port.This refers to switching at layer 2 of the OSI reference model, for example, Ethernet. A switch looks at the MAC address of each Ethernet frame ("packet", you might say, but at this level the correct name is "frame"), and if it knows that this MAC address is connected at a certain port, the switch will send the information out ONLY through that port.
