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What addressing information is recorded by a switch to build its MAC address table?
Wiki User
∙ 10y ago
the source Layer 2 address of incoming frames
Wiki User
∙ 10y ago
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Which switch do you use in the ARP command to display all information stored in the address resolution protocol cache on a computer?
-a
How does an Ethernet switch work?
Ethernet switches, both unmanaged and managed, avoid collisions by routing the messages in an Ethernet network to only the intended devices. When a switch receives an Ethernet message (packet), it reads the address of the device for which the message is intended, and then transmits the message out of only the port to which that device is connected (even if it is connected through several other switches). When the switch gets the first bit of information from the first device, such as your computer, it reads the MAC address of that device. The MAC address is the media access control number. This number is an ID number that is assigned to most network adapters and is preset by the manufacturer. Once this number is read, it is recorded in memory by the switch. Next, the switch attempts to look for any other devices on the network by sending out packet requests of information. Once another device gets this packet, it sends out a signal to the switch to acknowledge the request. Now the MAC address of this device is recorded. Each time these packets are sent, the information is "time stamped." The switch then works to filter this information that is communicated among all of the devices. The switch has enough memory to retain this information. Industrial applications of Ethernet (called industrial Ethernet) require special Ethernet switches that have industrial ratings for noise immunity, shock, vibration and temperature in a wide range of form factors with multiple options for copper and fiber connectivity. See link below for examples of industrial Ethernet Switches from Phoenix Contact.
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.
Which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
vty 0
Does hub has Mac address?
No. Hubs simply repeat all the Ethernet frames on all ports and do not interfere with the source or destination MAC addresses and as such do not need their own MAC address.
What information in an Ethernet frame is used by a Layer 2 switch to build its address table?
Source MAC-address
What kind of network information can you glean from issuing commands on a router or switch?
Any information that is within the line of path of the router or switch is the network information that you can glean from issuing commands on a router or switch.
What information in a frame does a switch or bridge use to populate the MAC address table?
Source MAC address and source port
Describe how a switch learns addresses?
A switch examines the frame for the MAC address information and adds it to its internal switching table as each frame passes through the switch.
Does switch works on data link layer?
Switch working in Data link layer of OSI Model which is working my MAC address it is sending receiving packets by Mac address which switch make mac tale in RAM to save all information.
Which switch do you use in the ARP command to display all information stored in the address resolution protocol cache on a computer?
-a
How does an Ethernet switch work?
Ethernet switches, both unmanaged and managed, avoid collisions by routing the messages in an Ethernet network to only the intended devices. When a switch receives an Ethernet message (packet), it reads the address of the device for which the message is intended, and then transmits the message out of only the port to which that device is connected (even if it is connected through several other switches). When the switch gets the first bit of information from the first device, such as your computer, it reads the MAC address of that device. The MAC address is the media access control number. This number is an ID number that is assigned to most network adapters and is preset by the manufacturer. Once this number is read, it is recorded in memory by the switch. Next, the switch attempts to look for any other devices on the network by sending out packet requests of information. Once another device gets this packet, it sends out a signal to the switch to acknowledge the request. Now the MAC address of this device is recorded. Each time these packets are sent, the information is "time stamped." The switch then works to filter this information that is communicated among all of the devices. The switch has enough memory to retain this information. Industrial applications of Ethernet (called industrial Ethernet) require special Ethernet switches that have industrial ratings for noise immunity, shock, vibration and temperature in a wide range of form factors with multiple options for copper and fiber connectivity. See link below for examples of industrial Ethernet Switches from Phoenix Contact.
Name 2 networking devices that transmit packets based on MAC address?
A MAC address is used as a unique identifier that is assigned to network interfaces. Two networking devices that transmit packets based on MAC addresses are switches and bridges.
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.
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.
Why does the switch between Host and the router not require configuration with an IP address to forward packets?
If a switch is connected to a router then the MAC address of the router is known to the switch through that port. A host takes advantage of this by using the default gateway address (the address of the router) which the switch "knows" by its lookup table. Therefore, the switch can learn the address automatically and no configuration is necessary.
How does the switch learn the Mac address?
Each Ethernet frame sent from one computer to another includes the source and the destionation MAC addresses. It is from these addresses that the switch learns what device is connected to the port. At first, the switch won't know the destination address; in that case, it will broadcast the frame through all of its ports. But soon it learns this information. It is also possible, in some switches, to add the MAC address through configuration commands.
