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A server is showing twice or more on my L2 switch ARP table

Same IP address, mac address, and ethernet port.

What could be causing this?

Thanks

share|improve this question
    
Describe the switch? – Michael Hampton Feb 26 '14 at 23:48
    
It's a 3COM 5500G-EI 48-Port - Thanks – atomicluis Feb 27 '14 at 0:09
    
Are you viewing the table by MAC address or port? – joeqwerty Feb 27 '14 at 0:10
    
I am using the command "display arp" and it gives me the IP address, MAC address and switch port. Sometimes I will get duplicate entries. – atomicluis Feb 27 '14 at 0:20

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