SNMP MIB Objects

RS-232-like MIB (RFC 1317)

The “rs232” object defined by RFC 1317 is supported for the synchronous data ports and the COM port. The RS-232-like MIB consists of one object and five tables, as follows:

HNumber of RS-232-like ports

HThe General Port Table

HThe Asynchronous Port Table

HThe Synchronous Port Table

HThe Input Signal Table

HThe Output Signal Table

The Asynchronous Port table is not supported by the DSU/CSU for the synchronous data ports. The Input Signal and Output Signal tables are not supported for the COM port. The following sections provide clarification for objects contained in the RS-232-like MIB when it is not clear how the object definition in MIB is related to the DSU/CSU.

Number of Ports – “rs232Number” Object (rs232 1)

This object contains the number of ports in the RS-232-like general port table.

This number is 3 for the 3162.

General Port Table, RS-232-like MIB

The general port table contains general configuration objects for the RS-232-like interfaces.

General Port Table – “rs232PortIndex” Object (rs232PortEntry 1)

This object contains a unique value for each port and is used as an index into the general port table (rs232PortTable). The values of the rs232PortIndex object vary between models and are listed below.

The values of rs232PortIndex for the 3162 DSU/CSU are:

H1 – COM port

H4 – DCE port 1

H5 – DCE port 2

3162-A2-GB20-40

August 2000

E-17