F Glossary - 3Com 3CBLSG48 User Manual

F
Access Control Entries
Access Control List
Address Resolution
Protocol (ARP)
Boot Protocol
(BOOTP)
Committed
Information Rate (CIR)
Committed Burst Size
Class of Service (CoS) CoS is supported by prioritizing packets based on the required level of
G
LOSSARY
ACEs are made of the filters that determine traffic classifications.
(ACE)
ACls can limit network traffic and restrict access to certain users or
devices by checking each packet for certain IP or MAC (i.e., layer 2)
(ACl)
information.
ARP converts between IP addresses and MAC (i.e., hardware)
addresses. ARP is used to locate the MAC address corresponding to a
given IP address. This allows the switch to use IP addresses for routing
decisions and the corresponding MAC addresses to forward packets
from one hop to the next.
BOOTP is used to provide bootup information for network devices,
including IP address information, the address of the TFTP server that
contains the devices system files, and the name of the boot file.
CIR is a committed rate in bits-per-second at which the carrier agrees
to accept packets from the client over a virtual circuit. The packets that
are sent in excess of the CIR rate, become eligible to be discarded and
not delivered if the frame relay network becomes congested, and it
would then be necessary to resend these discarded packets.
CbS is the maximum number of bits that can be transferred over a
(CbS) frame relay lilnk during some time interval.
service, and then placing them in the appropriate output queue. Data
is transmitted from the queues using weighted round-robin service to
enforce priority service and prevent blockage of lower-level queues.
Priority may be set according to the port default, the packet's
priority bit (in the VlAn tag), TCP/UDP port number, IP Precedence bit,
or DSCP priority bit.