-- the Address Translation group -- Implementation of the Address Translation group is -- mandatory for all systems. Note however that this group -- is deprecated by MIB-II. That is, it is being included -- solely for compatibility with MIB-I nodes, and will most -- likely be excluded from MIB-III nodes. From MIB-II and -- onwards, each network protocol group contains its own -- address translation tables. -- The Address Translation group contains one table which is -- the union across all interfaces of the translation tables -- for converting a NetworkAddress (e.g., an IP address) into -- a subnetwork-specific address. For lack of a better term, -- this document refers to such a subnetwork-specific address -- as a `physical' address. -- Examples of such translation tables are: for broadcast -- media where ARP is in use, the translation table is -- equivalent to the ARP cache; or, on an X.25 network where -- non-algorithmic translation to X.121 addresses is -- required, the translation table contains the -- NetworkAddress to X.121 address equivalences. atTable OBJECT-TYPE SYNTAX SEQUENCE OF AtEntry ACCESS not-accessible STATUS deprecated DESCRIPTION "The Address Translation tables contain the NetworkAddress to `physical' address equivalences. Some interfaces do not use translation tables for determining address equivalences (e.g., DDN-X.25 has an algorithmic method); if all interfaces are of this type, then the Address Translation table is empty, i.e., has zero entries." ::= { at 1 } atEntry OBJECT-TYPE SYNTAX AtEntry ACCESS not-accessible STATUS deprecated DESCRIPTION "Each entry contains one NetworkAddress to `physical' address equivalence." INDEX { atIfIndex, atNetAddress } ::= { atTable 1 } AtEntry ::= SEQUENCE { atIfIndex INTEGER, atPhysAddress PhysAddress, atNetAddress NetworkAddress } atIfIndex OBJECT-TYPE SYNTAX INTEGER ACCESS read-write STATUS deprecated DESCRIPTION "The interface on which this entry's equivalence is effective. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex." ::= { atEntry 1 } atPhysAddress OBJECT-TYPE SYNTAX PhysAddress ACCESS read-write STATUS deprecated DESCRIPTION "The media-dependent `physical' address. Setting this object to a null string (one of zero length) has the effect of invaliding the corresponding entry in the atTable object. That is, it effectively dissasociates the interface identified with said entry from the mapping identified with said entry. It is an implementation-specific matter as to whether the agent removes an invalidated entry from the table. Accordingly, management stations must be prepared to receive tabular information from agents that corresponds to entries not currently in use. Proper interpretation of such entries requires examination of the relevant atPhysAddress object." ::= { atEntry 2 } atNetAddress OBJECT-TYPE SYNTAX NetworkAddress ACCESS read-write STATUS deprecated DESCRIPTION "The NetworkAddress (e.g., the IP address) corresponding to the media-dependent `physical' address." ::= { atEntry 3 }