Interfaces Group
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8/28/2008
The Interfaces Group contains information about the physical interfaces of the entity, such as information about the events that take place at each interface. Each interface is considered attached to a subnetwork. You must implement the Interfaces Group for all of the systems. The following table shows the variables of the Interfaces Group and their properties.
| Name | Type | Access | Description |
|---|---|---|---|
ifNumber |
Integer |
R/O |
Number of network interfaces on system |
ifTable |
|
|
Contains information on each network interface |
ifIndex |
Integer |
R/O |
Index of interface (1 to ifNumber); Windows Embedded CE does not support the InterfaceIndex member variable |
ifDescr |
Octet string |
R/O |
Description of the interface |
ifType |
Integer |
R/O |
Type of interface: 6 = Ethernet23 = PPP24 = loopback |
ifMtu |
Integer |
R/O |
Maximum datagram size for the interface |
ifSpeed |
Gauge |
R/O |
Interface speed (in bits per second) |
ifPhysAddress |
Octet string |
R/O |
Physical address (media access control address) of the interface |
ifAdminStatus |
Integer |
R/O |
Expected interface state: 1 = up2 = down3 = testing |
ifOperStatus |
Integer |
R/O |
Current interface state: 1 = up2 = down3 = testing |
ifLastChange |
TimeTicks |
R/O |
Last time that the state changed (from sysUpTime) |
ifInOctets |
Counter |
R/O |
Total bytes that are received, including framing characters |
ifInUcastPkts |
Counter |
R/O |
Number of unicast packets that are delivered to a higher layer |
ifInNUcastPkts |
Counter |
R/O |
Number of non-unicast packets that are delivered to a higher layer |
ifInDiscards |
Counter |
R/O |
Inbound packets that are discarded without known errors |
ifInErrors |
Counter |
R/O |
Inbound packets that are discarded because of errors |
ifInUnknownProtos |
Counter |
R/O |
Inbound packets that are discarded because of an unknown protocol |
ifOutOctets |
Counter |
R/O |
Total bytes that are transmitted, including framing characters |
ifOutUcastPkts |
Counter |
R/O |
Number of unicast packet requests from a higher layer |
ifOutNUcastPkts |
Counter |
R/O |
Number of non-unicast packet requests from a higher layer |
ifOutDiscards |
Counter |
R/O |
Outbound packets that are discarded without known errors |
ifOutErrors |
Counter |
R/O |
Outbound packets that are discarded because of errors |
ifOutQLen |
Gauge |
R/O |
Length of the output packet queue, in packets |
ifSpecific |
Object ID |
R/O |
Reference to MIB definitions that are specific to this interface |