RFC 2233 (IF-MIB)

The following tables, groups, and variables are supported in this MIB.

Table/Group Supported Variables Comments
IfNumber
ifTable ifIndex The ifIndex for ports is calculated as ((slot * 1000) + port). For VLANs, the ifIndex starts from 1000001.
ifDescr
ifType Only the following values are supported:{other, ethernetCsmacd, softwareLoopback, propVirtual}
ifMtu
ifSpeed
ifPhysAddress
ifAdminStatus The testing state is not supported.
ifOperStatus
ifLastChange
ifInOctets Updated every time queries this counter.
ifInUcastPkts Updated every time SNMP queries this counter.
IfInNUcastPkts(deprecated) Though deprecated, this object returns a value if the system keeps a count. Updated every time SNMP queries this counter.
ifInDiscards No count is kept of this object, so it always returns 0.
ifInErrors Updated every time SNMP queries this counter.
ifInUnknownProtos No count is kept of this object, so it always returns 0.
ifOutOctets Updated every time SNMP queries this counter.
ifOutUcastPkts Updated every time SNMP queries this counter.
IfOutNUcastPkts(deprecated) Though deprecated, this object returns a value if the system keeps a count. Updated every time SNMP queries this counter.
ifOutDiscards No count is kept of this object, so it always returns 0.
ifOutErrors Updated every time SNMP queries this counter.
IfOutQLen(deprecated) Though deprecated, this object will returns a value if the system keeps a count. Updated every time SNMP queries this counter.
IfSpecific Not implemented. Always returns iso.org.dod.internet.
ifXTable All objects

Only port interfaces return non-zero values for the counter objects in this table.

The object ifPromiscuousMode is supported as read-only.

ifCounterDiscontinuityTime is not implemented.

All the statistics counters in the ifXTable are updated every time SNMP queries them.

ifStackTable Not supported
IfTestTable Not supported
ifRcvAddressTable All objects ifRcvAddressTable is supported as read-only. Also, only entries for physical ports appear in it.
snmpTraps linkDown
linkUp