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How do you find switch port that computer is on using mac address with cisco 3560 switch information provided?
Wiki User
∙ 14y ago
1. From a router or layer 3 switch...ping the ip address.
2. Do show arp | include "type ip address here"
This will give you the mac address associated with the arp.
3. Do a show mac address-table | include "type mac address learned from 2."
This will show you what vlan it is on and what trunk it used ie. gig 2/3 or gig 0/2.
4. Next you do a show cdp neighbor detail to learn ip address of next switch.
5. Repeat step 1.
6. Repeat step 2.
7. Repeat step 3. If mac address is on a trunk port....you have to do step 4 and go to next switch. If mac addess is on switchport....you have found port workstation is plugged into.
Cheers
Wiki User
∙ 14y 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
What is the purpose of including the destination address and source address fields in an ethernet frame?
Destination address is used to identify the recipient. Thus, a switch can send the frame out the correct port, and the receiving computer can confirm that the frame is for that computer and not for any other computer.Source address allows the receiving computer to know where to send the reply. It also helps a switch learn MAC addresses (learn which MAC addresses are connected to which switch ports).Destination address is used to identify the recipient. Thus, a switch can send the frame out the correct port, and the receiving computer can confirm that the frame is for that computer and not for any other computer.Source address allows the receiving computer to know where to send the reply. It also helps a switch learn MAC addresses (learn which MAC addresses are connected to which switch ports).Destination address is used to identify the recipient. Thus, a switch can send the frame out the correct port, and the receiving computer can confirm that the frame is for that computer and not for any other computer.Source address allows the receiving computer to know where to send the reply. It also helps a switch learn MAC addresses (learn which MAC addresses are connected to which switch ports).Destination address is used to identify the recipient. Thus, a switch can send the frame out the correct port, and the receiving computer can confirm that the frame is for that computer and not for any other computer.Source address allows the receiving computer to know where to send the reply. It also helps a switch learn MAC addresses (learn which MAC addresses are connected to which switch ports).
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 information in an Ethernet frame is used by a Layer 2 switch to build its address table?
Source MAC-address
Where is the ip address on a cisco switch for telnet?
The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.
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.
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 addressing information is recorded by a switch to build its MAC address table?
the source Layer 2 address of incoming frames
What information in a frame does a switch or bridge use to populate the MAC address table?
Source MAC address and source port
Write short notes on how switches learn MAC addresses and they use MAc addresses to forward?
When you connect your computer to a switch, it will automatically detect your computer's settings and will also gather system information, part of this information collected is your MAC address. Every network interface card (NIC) has it's own unique MAC address, and most computers these days have NIC's already installed.
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.
