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Duplicate IP address warning

 
moh24100
Advisor

Duplicate IP address warning

Hi all,

I am using Aruba core switch 5406zl , Every day I see the  following  warning

IPv4: Duplicate IPv4 address 192.168.1.1 is detected on port 1/C7 in VLAN2 with a MAC address of xxxxxxxx.

I have checked the switch connected on this port there is no duplicate IP Address.

 

Note: mac address xxxxxx this for Core switch 

IP address 192.168.1.1 this gateway for vlan 2 on Core switch.

 

Thanks

4 REPLIES
moh24100
Advisor

Re: Duplicate IP address warning

any insight?

 

Linkk
Frequent Advisor

Re: Duplicate IP address warning

Hi,

please clarify your topology a little bit. Do you get this log message on the core switch, that has this IP? If yes, where does the interface C7 lead to? 

Please enter the following on the core and on the switch, that logs the message:

show arp | include 192.168.1.1

What does it return?

moh24100
Advisor

Re: Duplicate IP address warning

Thanks for response 

yes i got message in core switch 

belwo  Arp command result :

show arp | include 192.168.1.1
192.168.1.100 xx089b-xxxxx dynamic Trk3
192.168.1.102 xxfeb5-xxxxx dynamic Trk2
192.168.1.106 xx23ae-xxxxx dynamic Trk2
192.168.1.109 xxbeb-xxxxx dynamic Trk2

moh24100
Advisor

Re: Duplicate IP address warning

My network topology straight
All client switches connected to the core switch(uplink).

Note: This message appears only in early morning or late at night
But never appear during working hours.

Thanks