I have the IP address of a an unknown device and the mac address of another. I'd like to know the port the ip address is plugged into as well as its mac address so I can figure out the manufacturer.
I can guess the port on the stack of switches based on a mac address but not much else - i'd like to know what IP is assigned to that mac address so I can see by the web interface on it what is going on with it.
show mac-address-table - get IPs?
Re: show mac-address-table - get IPs?
You need to "ping" the IP address and then have a look in the arp table.
-> Do this on a devices of the same IP Range or on the default gateway... you will not see arp entries for devices in other networks!
On Windows /Linux:
arp -a
on Alcatel Switch:
show arp
Now you have the MAC you can have a look at the mac tables of your switches to find the port.. either Omnivista or manual work..
Start at your Core Switch,
show mac-address-table
show mac-learning (on 6900/6860)
Now you should see the Port where the Mac is seen (e.g. a link towards a distribution switch. log into that devices, repeat.. you will find the next "hop".
At the end you should be on a switch, where show mac-address-table will tell you "learned on 1/19" -> Your device is on Slot1 port 19
-> Do this on a devices of the same IP Range or on the default gateway... you will not see arp entries for devices in other networks!
On Windows /Linux:
arp -a
on Alcatel Switch:
show arp
Now you have the MAC you can have a look at the mac tables of your switches to find the port.. either Omnivista or manual work..
Start at your Core Switch,
show mac-address-table
show mac-learning (on 6900/6860)
Now you should see the Port where the Mac is seen (e.g. a link towards a distribution switch. log into that devices, repeat.. you will find the next "hop".
At the end you should be on a switch, where show mac-address-table will tell you "learned on 1/19" -> Your device is on Slot1 port 19
Re: show mac-address-table - get IPs?
You need to "ping" the IP address and then have a look in the arp table.
-> Do this on a devices of the same IP Range or on the default gateway... you will not see arp entries for devices in other networks!
On Windows /Linux:
arp -a
on Alcatel Switch:
show arp
Now you have the MAC you can have a look at the mac tables of your switches to find the port.. either Omnivista or manual work..
Start at your Core Switch,
show mac-address-table
show mac-learning (on 6900/6860)
Now you should see the Port where the Mac is seen (e.g. a link towards a distribution switch. log into that devices, repeat.. you will find the next "hop".
At the end you should be on a switch, where show mac-address-table will tell you "learned on 1/19" -> Your device is on Slot1 port 19
-> Do this on a devices of the same IP Range or on the default gateway... you will not see arp entries for devices in other networks!
On Windows /Linux:
arp -a
on Alcatel Switch:
show arp
Now you have the MAC you can have a look at the mac tables of your switches to find the port.. either Omnivista or manual work..
Start at your Core Switch,
show mac-address-table
show mac-learning (on 6900/6860)
Now you should see the Port where the Mac is seen (e.g. a link towards a distribution switch. log into that devices, repeat.. you will find the next "hop".
At the end you should be on a switch, where show mac-address-table will tell you "learned on 1/19" -> Your device is on Slot1 port 19
Re: show mac-address-table - get IPs?
Thanks - I'll give that a try. So if I only know the mac address of a device how do I get the IP address?
