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4 – MIB-II Objects
The Address Translation Group
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ifOutQLen (1.3.6.1.2.1.2.2.1.21)
The length (in packets) of the output packet queue.
Syntax
Gauge
Access
read-only
Status
mandatory
ifSpecific (1.3.6.1.2.1.2.2.1.22)
A reference to MIB definitions specific to the particular media being used to realize
the interface. For example, if the interface is realized by an Ethernet, then the
value of this object refers to a document that defines objects specific to Ethernet.
If this information is not present, its value should be set to the OBJECT
IDENTIFIER { 0 0 }, which is a syntactically valid object identifier, and any
conformant implementation of ASN.1 (Abstract Syntax Notation) and BER must
be able to generate and recognize this value.
Syntax
OBJECT IDENTIFIER
Access
read-only
Status
mandatory
The Address Translation Group
Implementation of the Address Translation group is mandatory for all systems.
However, 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 (for example,
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.