Search Cisco Switch For Mac
I tried Angryip scanner but it doesn't display mac addresses unless I've missed something. What I'm trying to do is identify the IP addresses of a switch that is sat on my desk. It provides mine and a collegues connectivity. The place I work at has a kind of messy network in that we have Netgear GS105 managed switches providing ports for groups of desks as the building has migrated from a chicken egg place (in the past) into cold stores into offices, so there aren't enough wall ports available. Actually since starting to write this I've had a conversation and those switches are on a different subnet to the main network (layer 3?) - I'm not very experienced with all this can you tell? I'm quite confused now and might have to do some extra reading.
RichGK wrote: I tried Angryip scanner but it doesn't display mac addresses unless I've missed something. What I'm trying to do is identify the IP addresses of a switch that is sat on my desk. It provides mine and a collegues connectivity. The place I work at has a kind of messy network in that we have Netgear GS105 managed switches providing ports for groups of desks as the building has migrated from a chicken egg place (in the past) into cold stores into offices, so there aren't enough wall ports available. Actually since starting to write this I've had a conversation and those switches are on a different subnet to the main network (layer 3?) - I'm not very experienced with all this can you tell? I'm quite confused now and might have to do some extra reading.
The switches may have been assigned a managed address on a different VLAN. Switches do not always require an IP address and the assigned one is most often used for management purposes. You can temporarily assign your computer to the same subnet as the switch to manage its settings if you are allowed.
Switch For Mac Free
If you have not done anything at all to the switch it may be waiting for someone to actually log in and set it up for your subnet. What I have sometimes done is create a secondary IP on my system on the same subnet as the switch and use it to communicate with the switch. Then you can correctly configure the switch for your network using that IP. Once you have the switch configured for your network, you can then manage it normally. Did your Arp command return any MAC addresses that are assigned to the Netgear company?
Assuming the device you are trying to resolve is on the same VLAN as the management IP address (I assume the default: VLAN 1 and IP address of your device is 172.16.32.164) you can try doing this (from the Cisco Catalyst): #ping 172.16.32.164 #show arp! Get the MAC Address of the device you are looking for #show mac-address-table The output should be something like this 4 0030.4842.f5a2 DYNAMIC Fa0/6 As you can see the device will be listed together with the port it results being connected to. If you have pinged the device from the network, not necessarily from the Cisco Switch the MAC address of the device should already be saved in the MAC address table of all switches, so the ping command won't be necessary. Thanks for your quick reply. I had already tried the 'show arp' command however I get 'VLAN1' as being the interface. What I need to do is associate an IP Address with the exact interface #. Example if someone comes to me and says 10.100.0.32 is port scanning can you please cut them off at the switch.
Cisco Mac Address Lookup
I will need to know the exact interface to shutdown (there are other reasons why I would need to know the interface # this is just an example). Any help is GREATLY appreciated - Long Live the TechRepublic! Since the switch is working at Layer 2 of the OSI model, you cannot associate an IP address on a port, but only a MAC address and the port it is connected. Also, from a security point of view, a portscan action can be done using a spoofed IP address, so the information given is unreliable. I would suggest you to do a map of the layer 2 of your network using some simple tool (nmap with -sP option to do a ping sweep of the entire subnet) and gathering the whole information in an Excel file (or equivalent). 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. With L3 switches.
Run CLI command 'show mac address-table', you will get list with Vlan ID, mac address and port info. Find your port in the list and take mac address which associates with this port.
Cisco Switch Command Find Mac Address
Then run 'show arp' command and find the record with mentioned above mac address. You have ip you looking for. For example: show mac address-table include GigabitEthernet2/28 you have output: 10 0002.a534.8ff5 dynamic ip GigabitEthernet2/28 sh arp include 0002.a534.8ff5 result: Internet 10.1.185.251 0 0002.a534.8ff5 ARPA Vlan10 Hope it help you.