Glossary
Glossary-6
Port Trunk
Defines a network link aggregation and trunking method which specifies how to
create a single high-speed logical link that combines several lower-speed physical
links.
Private VLANs
Private VLANs provide port-based security and isolation between ports within the
assigned VLAN. Data traffic on downlink ports can only be forwarded to, and from,
uplink ports.
QinQ Tunneling
QinQ is designed for service providers carrying traffic for multiple customers across
their networks. It is used to maintain customer-specific VLAN and Layer 2 protocol
configurations even when different customers use the same internal VLAN IDs.
QoS
Quality of Service. QoS refers to the capability of a network to provide better service
to selected traffic flows using features such as data prioritization, queuing,
congestion avoidance and traffic shaping. These features effectively provide
preferential treatment to specific flows either by raising the priority of one flow or
limiting the priority of another flow.
Remote Authentication Dial-in User Service
(RADIUS)
RADIUS
is a logon authentication protocol that uses software running on a central
server to control access to RADIUS-compliant devices on the network.
Remote Monitoring
(RMON)
RMON provides comprehensive network monitoring capabilities. It eliminates the
polling required in standard SNMP, and can set alarms on a variety of traffic
conditions, including specific error types.
Remote Switched Port Analyzer
(RSPN)
RSPAN can be used to mirror traffic from remote switches over a dedicated VLAN.
Rapid Spanning Tree Protocol
(RSTP)
RSTP
reduces the convergence time for network topology changes to about 10% of
that required by the older IEEE 802.1D STP standard.
Secure Shell
(SSH)
A secure replacement for remote access functions, including Telnet. SSH can
authenticate users with a cryptographic key, and encrypt data connections between
management clients and the switch.
Summary of Contents for DG-GS1550
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Page 46: ...Initial Configuration 2 10 2 ...
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