[j-nsp] juniper switch ex2200 how to find port from ip address?

[Eric Rochow]

If you have access to the device that is routing, you can find the MAC address from the ARP table. On a device running Junos, the command would be "show arp". You could narrow down the results with the match filter ("show arp | match <ip address>"). Then you can use "show ethernet-switching table brief" on the EX2200 as you mentioned before.

-----Original Message-----
From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Evangelos Kanarelis
Sent: Tuesday, August 26, 2014 7:23
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] juniper switch ex2200 how to find port from ip address?

Hello everybody

I am relatively new to networking and I am currently managing a few EX2200 switches.

I need to find to which port a machine is connected to, but all I have is an IP Address. I know that I can use show ethernet-switching table brief but unfortunately I do not have the MAC address.

Any help would be greatly appreciated.

Thank you

Angelo Kanarelis
Infrastructure Support Engineer

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