1.5 IPv4 important reminder for use

(1) Notes on Multihomed Configuration

When you assign multiple IPv4 addresses to an interface, if terminals that belong to the same broadcast domain as the interface use different subnet addresses to communicate with one another, IPv4 forwarding can occur via the Switch.

If forwarding does occur, the hardware forwards the packets to the software so that the software can determine whether an ICMP Redirect message can be sent. keep the following in mind:

• When terminals in the same broadcast domain are allowed to directly communicate with each other, use the same subnet for all terminals.

• If you need to assign different subnets to the terminals in the same broadcast domain for security reasons, we recommend that you avoid high CPU load by using the appropriate configuration command to stop the hardware from making a determination regarding whether ICMP Redirect messages can be sent.