F. SNMP MIB Objects

Interface Group, MIB II

The Interfaces Group consists of an object indicating the number of interfaces supported by the unit and an interface table containing an entry for each interface. The DSU/CSU provides an entry in the interface table for the network interface, the DTE Drop/Insert (DSX-1) interface, each of the synchronous data ports (1, 2, or 4 depending on the model), the COM port, the AUX port, and the MODEM port, if they apply. The following sections provide clarification for objects contained in the Interface Group where it is not clear how the object definition in MIB II is related to the DSU/CSU.

Interface Group – “ifNumber” Object (interfaces 1)

This variable contains the maximum number of MIB II supported interfaces possible across the 31xx Series product line (9). This is different from the MIB description, which is defined as the number of interfaces on the particular device. This change allows the use of the same ifIndexes across all 31xx Series models.

Interface Group – “ifIndex” Object (ifEntry 1)

his object provides the index into the ifTable and typically into tables in other MIBs also. The values of the ifIndex object do not vary between models even though not all indexes are supported for a particular model. When an unsupported index is accessed, “noSuchName” is returned.

he following are the values of the ifIndexes for all DSU/CSU models:

1 – Net T1

2 – DTE T1

3 – COM port

4 – Modem port

5 – Auxiliary RS-232 port (Model 3164 only)

6 – DCE port 1

7 – DCE port 2

T8 – DCE port 3

9 – DCE port 4

F-4

March 2001

3160-A2-GB24-10

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Paradyne 3160-A4 Interface Group, MIB, Interface Group ifNumber Object interfaces, Interface Group ifIndex Object ifEntry

3160-A4, 3161, and 3165-A4 specifications

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