09-19-2012 11:41 AM - edited 03-07-2019 08:58 AM
hey guys
i have a question
i´d like to prevent duplicate ip add in the network.
for examplo, if the user setup the ip address of gateway , are there any mechanism that can prevent it , to minimize the impact ?
thanks
09-19-2012 12:11 PM
Hi,
give them IP addresses with DHCP and use DHCP snooping along with IP source guard on access switches so they won't be able to modify their IP address.
Regards.
Alain
Don't forget to rate helpful posts.
09-20-2012 04:01 AM
Hello
as suggested use DHCP snooping which will meet your requirements.
enabling snooping:
switch
switch
Per port config:
switch
switch
Please go through the below link which may help you
Please rate the helpful posts,
thanks,
srikanth
04-04-2024 09:50 AM
I am using the new SISF with device tracking, and it does not prevent duplicate IP address.
I setup a policy for user port with the following configuration:
security-level guard
device-role node
limit address-count 1
Global: device-tracking tracking auto-source
Thank you,
Audie
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