| ifNumber | 1.3.6.1.2.1.2.1 | Read-only | The number of network interfaces (regardless of their current state) pres.ent on this system. |
| ifTable | 1.3.6.1.2.1.2.2 | Not-accessible | A list of interface entries. The number of entries is given by the value of ifNumber. |
| ifEntry | 1.3.6.1.2.1.2.2.1 | Not-accessible | An entry containing management information applicable to a particular interface. |
| ifIndex | 1.3.6.1.2.1.2.2.1.1 | Read-only | A unique value for each interface. |
| ifDescr | 1.3.6.1.2.1.2.2.1.2 | Read-only | A textual string containing information about the interface. |
| ifType | 1.3.6.1.2.1.2.2.1.3 | Read-only | The type of interface, distinguished according to the physical/link protocol(s) immediately ‘below’ the network layer in the protocol stack. |
| ifSpeed | 1.3.6.1.2.1.2.2.1.5 | Read-only | An estimate of the interface's current bandwidth in bits per second. |
| ifPhysAddress | 1.3.6.1.2.1.2.2.1.6 | Read-only | The interface’s address at the protocol layer immediately 'below' the network layer in the protocol stack. |
| ifAdminStatus | 1.3.6.1.2.1.2.2.1.7 | Read-only | The desired state of the interface. |
| ifMtu | 1.3.6.1.2.1.2.2.1.4 | Read-only | The size of the largest datagram which can be sent/received on the interface, specified in octets. |
| ifOperStatus | 1.3.6.1.2.1.2.2.1.8 | Read-only | The current operational state of the interface. |
| ifLastChange | 1.3.6.1.2.1.2.2.1.9 | Read-only | The value of sysUpTime at the time the interface entered its current operational state. |
| ifInOctets | 1.3.6.1.2.1.2.2.1.10 | Read-only | The total number of octets received on the interface, including framing characters. |
| ifInUcastPkts | 1.3.6.1.2.1.2.2.1.11 | Read-only | The number of subnetwork-unicast packets delivered to a higher-layer protocol. |
| ifInNUcastPkts | 1.3.6.1.2.1.2.2.1.12 | Read-only | The number of non-unicast (i.e., subnetwork-broadcast or subnetwork-multicast) packets delivered to a higher-layer protocol. |
| ifInDiscards | 1.3.6.1.2.1.2.2.1.13 | Read-only | The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. |
| ifInErrors | 1.3.6.1.2.1.2.2.1.14 | Read-only | The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. |
| ifInUnknownProtos | 1.3.6.1.2.1.2.2.1.15 | Read-only | The number of packets received via the interface which were discarded because of an unknown or unsupported protocol. |
| ifOutOctets | 1.3.6.1.2.1.2.2.1.16 | Read-only | The total number of octets transmitted out of the interface, including framing characters. |
| ifOutUcastPkts | 1.3.6.1.2.1.2.2.1.17 | Read-only | The total number of packets that higher-level protocols requested be transmitted to a subnetwork-unicast address, including those that were discarded or not sent. |
| ifOutNUcastPkts | 1.3.6.1.2.1.2.2.1.18 | Read-only | The total number of packets that higher-level protocols requested be transmitted, and which were addressed to a multicast or broadcast address at this sub-layer, including those that were discarded or not sent. |
| ifOutDiscards | 1.3.6.1.2.1.2.2.1.19 | Read-only | The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being transmitted. |
| ifMtu | 1.3.6.1.2.1.2.2.1.20 | Read-only | The size of the largest datagram which can be sent/received on the interface, specified in octets. |
| ifOutErrors | 1.3.6.1.2.1.2.2.1.21 | Read-only | The number of outbound packets that could not be transmitted because of errors. |
| ifOutQLen | 1.3.6.1.2.1.2.2.1.21 | Read-only | The length of the output packet queue (in packets). |
| ifSpecific | 1.3.6.1.2.1.2.2.1.22 | Read-only | A reference to MIB definitions specific to the particular media being used to realize the interface. |