MIB Discovery
1926 modules enregistr├ęs
MIX : 1 (iso). 3 (org). 6 (dod). 1 (internet). 2 (mgmt). 1 (mib-2). 16 (rmon). 23 (apm). 1 (apmMibObjects). 8 (apmNameTable)
TXT : iso. org. dod. internet. mgmt. mib-2. rmon. apm. apmMibObjects. apmNameTable
Module APM-MIB (ietf)
DescriptionA client machine may have multiple addresses during a period of monitoring. The apmNameTable assigns a long-lived identifier to a client and records what addresses were assigned to that client for periods of time. Various implementation techniques exist for tracking this mapping but if an agent is unable to track client address mappings, it may map client identifiers to client addresses rather than to distinct client machines. A particular apmNameClientID should be a constant attribute of a particular client. When available, the agent may also record the machine name and/or user name which may be valuable for displaying to humans. The apmNameMachineName and apmNameUserName are relatively constant, changing only if these attributes actually change on the client. The agent will store a historical log of these entries, aging out old entries as the log becomes too large. Since this table contains information vital to the interpretation of other tables (e.g., the apmReportTable), the agent should ensure that the log doesn't age out entries that would be referenced by data in those tables. Note that an entry for a clientID is active from its StartTime until the StartTime of another entry (for the same clientID) that supersedes it, or 'now' if none supersede it. Therefore, if a clientID only has a single entry, it is by definition very new and should never be aged out. No entry for a clientID should be aged out unless it has been updated by a new entry for the client (i.e., with an updated address) and only if the new entry is 'old' enough. To determine how old is old enough, compute the maximum value of Interval * (NumReports + 1) of all entries in the apmReportControlTable (the '+ 1' is to allow a reasonable period of time for the report to be downloaded). Then take the larger of this value and the age in seconds of the oldest entry in the current transaction table. If an entry for a clientID is superseded by another entry whose StartTime is more than this many seconds ago, then the older entry may be deleted.