Cabletron Alias Table

1.3.6.1.4.1.52.4.1.3.7.1.1.1

The ctAliasTable contains information about the aliases known by the agent. This table is indexed using a unique and arbitrary ID and a TimeFilter to allow a management station to learn all alias entries that have been modified since time X. This table is NOT designed to do a single GET. This Table is designed for MIB Walks only. This table contains objects that map upper-layer network services and entities to the physical location of the associated port, and the MAC address of the associated end-system (node). All entries in this table are deleted when sysUpTime is reset to zero. This table allows for a time filtered view. It is useful for determining what has been modified in the Alias Table since a specified time. If a management station reads the ctAliasTable of an entity at time X, subsequent updates can be realized by performing get-next requests of this table to determine which entries have been modified since time X. Then the management station can use GET requests to retrieve only the records of interest from the Alias table. There is a delay between retrieving the Alias Reference values from this table, and a GET request to retrieve a modified row from the Alias table. The management station should be prepared for two possibilities: 1) the GET request may fail if the Alias table entry has been deleted during the delay, and 2) the entry may have been modified during the delay, so the modification time of the retrieved entry may differ from the modification time of the Delta entry. If the entry in the Alias Control table identified by ctAliasID is marked inactive by management request, and subsequently deleted to free resources, all corresponding entries in this table are also deleted. If the agent needs to free resources, it can delete entries from this table. It SHOULD first remove those which have been marked inactive in the ctAliasControlTable, then it SHOULD remove those entries with the oldest modification times.