Port copy, etc.) for each ingress port. They will though only apply if the frame gets past the ACE
matching without getting matched. In that case a counter associated with that port is
incremented. See the Web page help text for each specific port property.
ACL|Rate Limiters: Under this page you can configure the rate limiters. There can be 15
different rate limiters, each ranging from 1-1024K packets per seconds. Under "Ports" and
"Access Control List" web-pages 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
802.1i 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.
APS
APS is an acronym for Automatic Protection Switching. This protocol is used to secure that
switching is done bidirectional in the two 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.
Auto-Negotiation
Auto-negotiation is the process where two different devices establish the mode of
operation and the speed settings that can be shared by those devices for a link.
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