Netgear gsm7312 사용자 설명서

B-16

Glossary

if necessary. Port mirroring can be managed locally or remotely. An administrator configures port mirroring 
by assigning a port from which to copy all packets and another port where those packets will be sent. A 
packet bound for or heading away from the first port will be forwarded onto the second port as well. The 
administrator places a protocol analyzer on the port receiving the mirrored data to monitor each segment 
separately. The analyzer captures and evaluates the data without affecting the client on the original port. The 
monitor port may be a port on the same SwitchModule with an attached RMON probe, a port on a different 
SwitchModule in the same hub, or the SwitchModule processor. Port mirroring can consume significant 
CPU resources while active. Better choices for long-term monitoring may include a passive tap like an 
optical probe or an Ethernet repeater.

The ability to monitor the traffic passing through a port on a device to analyze network characteristics and 
perform troubleshooting.

The speed that a port on a device uses to communicate with another device or the network.

The ability to combine multiple ports on a device to create a single, high-bandwidth connection.

A set of rules for communication between devices on a network.

PDU is a packet of data passed across a network. The term implies a specific layer of the OSI model and a 
specific protocol.

Like DVMRP, PIM-DM uses a flood and prune protocol for building multicast trees. However, unlike 
DVMRP, PIM-DM uses existing unicast protocols for determining the route to the source.

QoS is a networking term that specifies a guaranteed level of throughput. Throughput is the amount of data 
transferred from one device to another or processed in a specified amount of time - typically, throughputs are 
measured in bytes per second (Bps).