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#SHOW MAC ADDRESS CISCO MAC#

The command will show you names and related ports of all the Cisco switches that are connected to the current switch. If you have several switches in your office, use the sh cdp neighbors command to determine the name and address for running the neighbor switch.

#SHOW MAC ADDRESS CISCO MAC#

In this case, you should repeat search in the MAC addresses table of the neighboring switch. Sometimes, another switch is connected to the found port of the current switch. But if there are several switches in the network, it’s possible that you found not the final one. If you have a small office and all network is organized only using one switch, your search is finished. The output line shows that the host is located in VLAN 10 and is connected to a port of the Gigabitethernet 0/1 switch. SW-DELTACONFIG-1# sh mac address-table | inc 74f2 Usually, four last symbols will be enough. For more convenience, you can filter the necessary МАС address. Usually, there are a large number of records shown at this table. The show mac address-table command (it can sometimes be written with an additional hyphen instead of a space, like this: show mac - address-table) shows the MAC address table of all active devices that are connected to the switch. Having determined the device’s MAC address, you can keep on searching for its direct location on the switch. Protocol Address Age (min) Hardware Addr Type Interface The ARP table on these devices will contain the compliance of the MAC and IP addresses.įor searching, use the sh arp | inc x.x.x.x command, where x.x.x.x is the IP of the host we need. It’s possible if you have access to a Cisco router or Cisco ASA firewall which is the default host gateway.

To learn the MAC address remotely if you know the user’s computer IP address.

To execute the ipconfig /all command in the command line on the user’s computer.

There are two possible ways of how you can determine the MAC address: It’s known that the IP address of his computer is 192.168.10.100 So, let’s say you need to find the switch port a user John is connected to.

Your task is to use this information wisely. The point is that each switch stores information about all MAC addresses that showed at least any network activity in the last few minutes. To do it, you don’t have to look for it visually. In everyday work, it’s often necessary to determine the switch and port a user or device is connected to.