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Viewing all Hosts connected to a switch

ChrisGiebner
Occasional Visitor

Viewing all Hosts connected to a switch

Hi all,

a customer of me wants to see which hosts (IP/MAC) are connected to a switch.

In detail:

They do "maintenance" during work-hours and want to see which hosts will be down if they do a reboot, so they can inform them. They use IMC and want to click on the switch in IMC and see which hosts are connected to which ports, including IP and MAC information, regardless if the switch does routing or not.

 

1 REPLY
Vince-Whirlwind
Honored Contributor

Re: Viewing all Hosts connected to a switch

I use a switchport mapper for this, because it will do 3 queries and put all the info together for you:

1/ the mac-address table on the switch: tells you what MAC addresses are on which switchport
2/ The ARP table on the Layer3 "core": tells you which IP addresses belong to which MAC address
3/ DNS: tells you what hostanmes belong to which IP addresses

You can of course do all this manually, but a proper witchport mapper is way easier.

I assume IMC has this component built in somewhere.