CiM-550 IP Enabled Satellite Modem

Rev. 2

SNMP interface

CD/CIM550.IOM

13.2.2INTERFACE GROUP

This group provides the number of interfaces on a managed device and a table describing all interfaces.

The ifNumber OID is the number of network interfaces present on this system. On a cim550 the ifNumber should be 3 corresponding to the Ethernet, Satellite, and Loopback interfaces.

13.2.2.1THE INTERFACES TABLE

 

Table 13-4. Interfaces Table OIDs

OID

Description

ifIndex

Unique value for each interface. The cim550 gives the Ethernet,

 

Satellite, and Loopback interfaces a value of 1, 2, or 3.

ifDescr

Textual string containing information about the interface. The

 

Ethernet interface is “fei0”. The Loopback interface is “lo0”. The

 

Satellite interface is “hdl1”.

ifType

Link protocol for the interface. The Ethernet interface is set to

 

ethernet-csmacd(6). The Loopback interface is set to

 

softwareLoopback(24). The Satellite Interface is

 

propPointToPointSerial(22).

ifMtu

Size of the largest datagram which can be sent/received on the

 

interface, specified in octets. For the Ethernet and Satellite

 

Interfaces, the MTU is 1500.

ifSpeed

Estimate of the interface's current bandwidth in bits per second.

 

The Ethernet Interface can be set to ether 100000000 (100 Mbps)

 

or 10000000 (10 Mbps). If the Ethernet driver is set to “Auto” then

 

100000000 will be returned. The Satellite Interface’s ifSpeed

 

corresponds to the data rate of the transmitter only. The

 

transmitter’s ifSpeed can range from 2400 (2.4 Kbps) to 2048000

 

(2.048 Mbps). If the cim550 is a Demod-Only then ifSpeed will be

 

zero.

ifPhyAddress

Interface's address at the datalink layer. For the Ethernet Interface

 

this corresponds to the MAC address (6 bytes). For the Satellite

 

and Loopback Interface this value is undefined.

ifAdminSate

Desired state of the interface. For the cim550, the interfaces

 

cannot be changed from an up(1) status.

ifOperState

Current operational state of the interface. For the cim550, the

 

interfaces will remain in an up(1) status.

ifLastChange

Value of sysUpTime at the time the interface entered its current

 

operational state. For the cim550, this will remain zero,

 

corresponding to boot time.

ifInOctets

Total number of octets received on the interface. This statistic is

 

counted for both the Ethernet and Satellite interfaces.

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