he SNMPv3 settings frame can be viewed as in three parts. The SNMPv3 table can be stored as a serialized file or as a database. Operation is faster when table entries are stored as a serialized file. To store SNMPv3 user information in database format, the necessary database parameters are entered in a dialog box (see Figure 4.7). If the data- base connection is established then all user information that is entered will be saved in the database. Storing table entries in database format offers the advantages of scal- ability and accessibility. MIB files are usually read and parsed into MIB modules and displayed in the MIB tree. In the case shown in Figure 4.8, a MIB is always parsed before it is loaded. This can be time consuming, especially when the MIB files are large. To improve per- formance, the user may select the alternative option of loading from compiled MIBs (see the radio button selected in Figure 4.8). 4 Network Management Using SNMP A Database Parameters Drivernameorg.gjt.mm.mysql.Driver URL JDBC: mysqlill< machine name > / < database na UserName testing Password ********* Connect Close Figure 4.7 Database parameters. A MibBrowser Settings General Mib Settings v3Settings Load MIBs directly Load MIBs From Compiled File Overwrite existing Compiled MIB Files Load MIBs From Database Overwrite MIBs in Database Recently Loaded MIBs Updated List C:PProgram FilesIAdventNettAdventNetSNMPv3tmib C:PProgram Files\AdventNetAdventNetSN C:PProgram Files\AdventNettAdventNetSNMPv3lmib C:PProgram Files\AdventNeftAdventNetSN Amibs\RFC1213-MIB Delete JDBCParams Drivername UserName Password Figure 4.8 MibBrowser settings. MIB files can also be loaded from any Relational Database Management System (RDBMS) such as SQL Server, MySQL or Oracle. The MibBrowser uses Java Database Connectivity (JDBC) for database connectivity, although it should be noted that this is specific to AdventNet and certainly not all SNMP management applications will use JDBC. The MibBrowser allows the user to carry out the usual SNMP operations: retri