Differences between IPSG and port security of S series switches

For S series switches (except S1700 switches), both IPSG and port security support bindings between MAC addresses and interfaces. Their differences are as follows:
�?IPSG: Binds MAC addresses to interfaces in a binding table so that a host can only go online through a fixed port. The hosts of which MAC addresses are not in the binding table cannot go online through the switch. IPSG prevents IP address spoofing attacks. For example, it prevents a malicious host from stealing an authorized host's IP address to access or attack the network.

�?Port security: Converts limited number of dynamic MAC entries learned by interfaces into secure MAC entries, so that a host can only go online through a fixed port. The hosts of which MAC addresses are not in the MAC address table cannot go online through the switch. Port security prevents access of unauthorized hosts and limits the number of access hosts. It is applicable to networks with a large number of hosts.
If you just want to prevent hosts with unauthorized MAC addresses from communicating with each other and a large number of hosts reside on the network, port security is recommended.

Other related questions:
Differences between IPSG and DAI of S series switches
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