Under the Hood: Unveiling the next gen campus core architect Created by klei on AM. The long-awaited Cisco Catalyst Series switches are now here. As foundational building blocks for the Cisco Digital Network Architecture, Catalyst Series switches help customers simplify complexity, optimize IT, and reduce operational cost Created by betswang on PM. Inviting all Network professionals! We want you to tell us what devices you use to do your work and its screen resolution. Your response will help us improve network management tools. Calling Cisco Customers who manage networks in your companies We have a quick 5-minute survey for you to complete.
Your response will help Cisco improve a product feature that could benefit you. Unleashing the power of Catalyst Series switches with o Created by jayshar on AM. With this being an EMR release, it Create Please login to create content. If this doesn't work, you probably have a PC that is connected but turned off and is therefore not sending any traffic and does not have an IP and will not respond to a broadcast ping.
Cisco Network assistant not finding switches
In this case, I don't know of a way to get the device's mac. To update the MAC address table, you may require to ping the IP address of the device connected with port 15 of the switch. Actually what you can do is enable port security on your switch ports for a short time while you pull the MAC address info you need.
Then you can turn off port security if you don't need it. Sign up to join this community. The best answers are voted up and rise to the top.
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Home Questions Tags Users Unanswered. Cisco switch, how to determine MAC address of connected device or wake device up? Ask Question. Asked 7 years, 8 months ago. Active 3 years, 8 months ago.
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Viewed 41k times. Alex Alex 3 3 gold badges 23 23 silver badges 47 47 bronze badges. I'm not sure how this would help. If the device was transmitting at all the mac would already be in the table.
Clearing the table won't cause the device to transmit anything. This is typically done when you move a switch, router or host from one port to another and want to quickly update the mac table with the new info to keep downtime to a minimum. Port 13 has mac but port 15 still nothing. That will make populate the MAC address table. Here are a few that I think are worth checking out. Note: My search didn't turn up any free open-source products. If you know of any open source products that map switch ports, please post your recommendations in the article discussion.
The easiest way to see which Ethernet MAC address is on which port is to use the show mac-address-table command.
Here is an example:. With the command, you can figure out which MAC address is on which port. When you use the command, you have to go to each switch and run the command. If the network is down, you will have to go to the console of each switch. If you had one of the applications above, you should have been able to map out which MAC address and even which PC name is on every switch in the network.
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If the scenario I describe at the beginning of the article does happen, you could reference your spreadsheet or printout of which device is connected where. Want to learn more about router and switch management? Automatically sign up for our free Cisco Routers and Switches newsletter , delivered each Friday!