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Webcast-Catalyst9k
New Member

Can ARP broadcasts be blocked for specified IPs?

Hi,

We are using the SG300 series switches, and have come across an issue where we need to block ARP broadcasts based on IP.

Here's the scenario, we have multiple computers, each with only one ethernet adapter, each adapter has two IPs configured, 10.10.10.x and 192.168.0.100

All machines have the same 192.168.0.100 address (Used for applications/hardware running locally to that machine and this IP cannot be changed).

When the machines are connected to the network, ARP is advertising BOTH the 10.10.10.x address and the 192.168.0.100 address.

As all machines have the same 192 address we receive IP conflict notifications on each machine.

How can the ARP broadcasts for the 192 address range be blocked?

Regards,

J

1 REPLY
Cisco Employee

Can ARP broadcasts be blocked for specified IPs?

Hello James,

You might find reading this post useful:

https://supportforums.cisco.com/thread/2058743

Regards,

Pulkit

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