I have two WS-C3560E-48PD switches in the same organisation. How can I know which ports are utilized on the switches, and PC, phones, and printers?
Is there are some command used to know above issue?
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Depending on what you really mean, you could use the
show mac-address-table command to see the MAC address table on a switch. This will give you the MAC addresses and the interfaces on which traffic from those MAC addresses was seen.
A MAC address for a device will tell you the OUI (manufacturer) of the ethernet interface of the device.
First of all, which ports type you are trying to monitor? Physical, SVI's or other? Best way to do that in a long-term perspective is setup the SNMP credentials on a switch and add it to the monitoring system to collect the information that you need.
Fast way to see some information from switch cli is: show int fa1/1 or gi1/1 (See the 5 minute utilization and input/output packets. Queue analysis can help also)
What do you mean about PC/Phones/Printers? Do you what to know where they connected or you want to discover that? If you know the exact ports, you may use the same commands as said.
The following command could be helpful for you:
show int | i FastEthernet|packets input|packets output|queue Change FastEthernet for your type of Ethernet if you don't see anything.