Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 1178)

1128 Brocade 6910 Ethernet Access Switch Configuration Guide
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Glossary and Acronyms
D
Out-of-Band Management
Management of the network from a station not attached to the network.
Port Authentication
See IEEE 802.1X.
Port Mirroring
A method whereby data on a target port is mirrored to a monitor port for troubleshooting with a
logic analyzer or RMON probe. This allows data on the target port to be studied unobstructively.
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
QinQ tunneling 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.
RADIUS
Remote Authentication Dial-in User Service. RA
DIUS
is a logon authentication protocol that uses
software running on a central server to control access to RADIUS-compliant devices on the
network.
RMON
Remote Monitoring. 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.
RSTP
Rapid Spanning Tree Protocol. RSTP reduces the convergence time for network topology changes to
about 10% of that required by the older IEEE 802.1D STP standard.