Cabletron Systems FN10 Reference Manual

Also see for Fast Network 10: User guide Quick setup guide

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Navigating Through the MIBTree StructureFast Network 10 MIB Reference GuidePage 1-7• The values within the variable bindings of the returned GetResponse mayreflect meaningful information, rather than being an exact copy of the valuesfrom the SetRequest. For example, if a SetRequest contains two variablebindings, the first specifying that memory should be examined and the secondspecifying the contents of the memory, then the FN10’s GetResponse willupdate the value of the second variable binding to contain the actual contentsof the memory.Many parameters are described by existing Management Information Base(MIB) documents. The meanings of those parameters are not alwaysimplemented exactly by the FN10; instead, the parameters are treated as best ascan be correlated to the FN10’s parameters. The FN10 parameters that cannot becorrelated are part of a Cabletron proprietary MIB, called: 2sigma OBJECT IDENTIFIER = {enterprises 97}The parameters and traps which are supported are described in the chapters thatfollow.1.7 NAVIGATING THROUGH THE MIBTREE STRUCTUREThe MIB structure is a hierarchical tree structure. Each MIB variable has anumeric value that indicates its place in the hierarchy. The structure wasoriginally created, and is still maintained by the International Organization forStandardization (ISO) and the International Telecommunications Union (ITU),two international standards organizations. You can get and set MIB variables bynavigating down the tree to a specific MIB, a group or table within that MIB, andthen to the individual variable. Figure 1-1 shows the path down the MIB treestructure. Under the “mib-2” and the Cabletron enterprise branch, are all therelevant MIBs that the FN10 supports.2. Usually, it is better to support a standard parameter in a non-standard fashion,than not support the standard parameter at all. Deciding what constitutes anacceptable deviation is a gray area.