Dell PowerConnect 5448 User's Guide - Page 437
managed objects. In the SNMP Manager/ Agent, Multicast, Packets
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Mask A filter that includes or excludes certain values, for example parts of an IP address. For example, Unit 2 is inserted in the first minute of a ten-minute cycle, and Unit 1 is inserted in fifth minute of the same cycle, the units are considered the same age. MD5 Message Digest 5. An algorithm that produces a 128bit hash. MD5 is a variation of MD4, and increases MD4 security. MD5 verifies the integrity of the communication, authenticates the origin of the communication. MDI Media Dependent Interface. A cable used for end stations. MDIX Media Dependent Interface with Crossover (MDIX). A cable used for hubs and switches. MIB Management Information Base. MIBs contain information describing specific aspects of network components. Multicast Transmits copies of a single packet to multiple ports. N NA Neighbor Advertisement. ND Neighbor Discovery. NS Neighbor Solicitation. NMS Network Management System. An interface that provides a method of managing a system. Node A network connection endpoint or a common junction for multiple network lines. Nodes include: • Processors • Controllers • Workstations O OID Object Identifier. Used by SNMP to identify managed objects. In the SNMP Manager/ Agent network management paradigm, each managed object must have an OID to identify it. P Packets Blocks of information for transmission in packet switched systems. PDU Protocol Data Unit. A data unit specified in a layer protocol consisting of protocol control information and layer user data. Glossary 437