Planet Networking & Communication GS-5220-24P4X User Manual page 366

ACL|Rate Limiters: On this page, you can configure the rate limiters. There can be 15 different rate limiters, each
ranging from 1 to 1024K packets per second. Under "Ports" and "Access Control List", you can assign a Rate Limiter
ID to the ACE(s) or ingress port(s).
AES
AES is an acronym for Advanced Encryption Standard. The encryption key protocol is applied in 802.1x standard to
improve WLAN security. It is an encryption standard by the U.S. government, which will replace DES and 3DES. AES
has a fixed block size of 128 bits and a key size of 128, 192, or 256 bits.
AMS
AMS is an acronym for Auto Media Select. AMS is used for dual media ports (ports supporting both copper (cu) and
fiber (SFP) cables. AMS automatically determines if an SFP or a CU cable is inserted and switches to the
corresponding media. If both SFP and cu cables are inserted, the port will select the prefered media.
APS
APS is an acronym for Automatic Protection Switching. This protocol is used to secure switching that is done
bidirectional in both ends of a protection group, as defined in G.8031.
Aggregation
Using multiple ports in parallel to increase the link speed beyond the limits of a port and to increase the redundancy for
higher availability.
(Also Port Aggregation, Link Aggregation).
ARP
ARP is an acronym for Address Resolution Protocol. It is a protocol that used to convert an IP address into a physical
address, such as an Ethernet address. ARP allows a host to communicate with other hosts when only the Internet
address of its neighbors is known. Before using IP, the host sends a broadcast ARP request containing the Internet
address of the desired destination system.
ARP Inspection
ARP Inspection is a secure feature. Several types of attacks can be launched against a host or devices connected to
Layer 2 networks by "poisoning" the ARP caches. This feature is used to block such attacks. Only valid ARP requests
and responses can go through the switch device.
User's Manual of GS-5220 Ultra PoE & PoE+ Series
366