Cisco ping mac address command

Once someone asks you to disable a device, you can match the IP address with its MAC address and disable the port you need. Also you can prevent users from "sniffing" the network by using the "protected port" feature given by Cisco Catalysts. Using the "mac-address sticky" option you will reduce efforts for managing mac address table on each port, while "mac-address maximum 2" will grant that no more than 2 MAC addresses can be applied on that port. Once a device starts an ARP Poisoning process or sniffing actively the port will shutdown or other chosen action policy.

Hope this helps : En3pY.

Step 2: Find The MAC Addresses

VLAN 1 is reserved for admin so someone knows how to get on there which is a little unsettling. Is this a layer-2 or layer-3 switch? If you are using VLANs then a router of some description will also be installed.

D to get the exact port. Find your port in the list and take mac address which associates with this port. Then run "show arp" command and find the record with mentioned above mac address. You have ip you looking for. Ping an IP in the same vlan and ping the ip you are after Then use the random IP as the source and your taget IP as the target. If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem.

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MAC & IP addresses

I know I can do a "show arp" and that will give me the IP's in the arp table but how to I associate that with the interface that it is attached to? Share Flag. All Answers. Collapse -. Ryan Foley 5, 3 3 gold badges 18 18 silver badges 42 42 bronze badges. John John 1 1 gold badge 6 6 silver badges 20 20 bronze badges. But as a reminder there's always interference. Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer.

Alternatively, you can provide your own answer and accept it. You should accept the answer. Adam Loveless Adam Loveless 2, 5 5 gold badges 25 25 silver badges 51 51 bronze badges.

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This Catalyst is my Core swith. I just have multiple VLANs on that switch, a lot of servers, and other smaller Cisco switches connected on that Core switch. I need to see addresses of that servers.

Use extended ping

I tried that, the commands, on my Core switch, and there was no result. Can I try anything else? John What model of switch are you using? Model is R.

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I dont have any interVLAN communication at all. Machines communicate only in their VLAN, with their server. You could do a ping sweep and then look in the ARP cache and then compare the MAC addresses you learned from the switch. Remi Letourneau Remi Letourneau 1, 8 8 silver badges 13 13 bronze badges. Though this is not exactly a solution, you can try show ip arp inspection log which will output the contents of the log buffer before the buffer was flashed.

Once again, this is not a real solution, so be mindful that it may as well not work at all. Caveat Emptor: this doesn't cover clients with static IP. Shocknoble Shocknoble 1.