network protocols handbook.pdf

34Protocols GuideTCP/IP - Application Layer ProtocolsRMON 2MIB GroupProtocol DirectoryProtocol DistributionAddress mappingNetwork Layer hostNetwork layer matrixApplication layer hostApplication layermatrixUser historyProbe configurationFunctionsThe Protocol Directory is a simple andinteroperable way for an RMON2 applicationto establish which protocols a particularRMON2 agent implements. This is especiallyimportant when the application and the agentare from different vendorsMapping the data collected by a probe tothe correct protocol name that can then bedisplayed to the network manager.Address translation between MAC-layer addressesand network-layer addresses whichare much easier to read and remember. Addresstranslation not only helps the networkmanager, it supports the SNMP managementplatform and will lead to improved topologymaps.Network host (IP layer) statisticsStores and retrieves network layer (IP layer)statistics for conversations between sets oftwo addresses.Application host statisticStores and retrieves application layer statisticsfor conversations between sets of twoaddresses.This feature enables the network managerto configure history studies of any counterin the system, such as a specific history ona particular file server or a router-to-routerconnectionThis RMON2 feature enables one vendor’sRMON application to remotely configureanother vendor’s RMON probe.Related protocolsSNMP, SMISponsor SourceRMON is defined by IETF (http://www.ietf.org) with a group ofRFCs shown in the reference links.Referencehttp://www.javvin.com/protocol/rfc2819.pdfRemote Network Monitoring Management Information Basehttp://www.javvin.com/protocol/rfc2021.pdfRemote Network Monitoring Management Information BaseVersion 2 using SMIv2http://www.javvin.com/protocol/rfc1157.pdfA Simple Network Management Protocol