Glossary-1
G
LOSSARY
Access Control List
(ACL)
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) information.
Address Resolution Protocol
(ARP)
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.
Boot Protocol
(BOOTP)
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.
Class of Service
(CoS)
CoS is supported by prioritizing packets based on the required level of 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.
Differentiated Services Code Point Service
(DSCP)
DSCP uses a six-bit tag to provide for up to 64 different forwarding behaviors.
Based on network policies, different kinds of traffic can be marked for different
kinds of forwarding. The DSCP bits are mapped to the Class of Service categories,
and then into the output queues.
Domain Name Service
(DNS)
A system used for translating host names for network nodes into IP addresses.
Summary of Contents for 8612XL3
Page 2: ......
Page 26: ...CONTENTS xxvi ...
Page 40: ...INTRODUCTION 1 14 ...
Page 69: ...BASIC CONFIGURATION 3 15 ...
Page 175: ...PORT CONFIGURATION 3 121 ...
Page 337: ...IP ROUTING 3 283 Web Click Routing Protocol RIP Statistics ...
Page 379: ...MULTICAST ROUTING 3 325 Command Usage ...
Page 396: ...CONFIGURING THE SWITCH 3 342 ...
Page 582: ...COMMAND LINE INTERFACE 4 186 ...
Page 806: ... 224 Command Mode Privileged Exec Example Console clear vrrp 1 interface 1 counters Console ...
Page 826: ... 6 ...
Page 828: ...TROUBLESHOOTING B 2 ...
Page 838: ...GLOSSARY Glossary 10 ...
Page 845: ......