Appendix C:
Glossary
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ACL|Ports
: The ACL Ports configuration is used to assign a Policy ID to an ingress port. This
is useful to group ports to obey the same traffic rules. Traffic Policy is created under the
"Access Control List" - page. You can you also set up specific traffic properties (Action / Rate
Limiter / 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).
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.
ARP
ARP is an acronym for
A
ddress
R
esolution
P
rotocol. 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.
C
CDP
CDP is an acronym for
C
isco
D
iscovery
P
rotocol.
