ACCULINK 316x DSU/CSU
E-4 January 1997 3160-A2-GB21-50
The supported ifIndexes for the 3161 DSU/CSU are:
•Net T1
•DTE T1
•COM port (if configured)
•DCE port 1
•DCE port 2 (if configured)
Interface Group – “ifDescr” Object (ifEntry 2)
This object provides information about the interface.
Each interface displays a text string as shown below:
Network T1: “Network T1. [Company Name]
T1 DSU/CSU, Hardware Version:
[CCA number for the CSU
board]”.
DTE T1: “DTE T1. [Company Name] T1
DSU/CSU, Hardware Version:
[CCA number for the CSU
board]”.
COM: “COM port. [Company Name] T1
DSU/CSU, Hardware Version:
[CCA number for the CSU board
for the standalone, or the CCA
number for the DSU board for the
carrier]”.
Modem: “MODEM port. [Company Name]
T1 DSU/CSU, Hardware Version:
[CCA number for the CSU
board]”.
AUX: “AUX port. [Company Name] T1
DSU/CSU, Hardware Version:
[CCA number for the CSU
board]”.
Data Ports: “Data Port n. [Company Name] T1
DSU/CSU, Hardware Version:
[CCA number for the DSU board]”
(where n is 1 to 4).
Interface Group – “ifType” Object (ifEntry 3)
This object identifies the type of the interface based on
the physical/link protocol(s) immediately below the
network layer. Only the following values are supported by
the DSU/CSU:
•ds1 – Used for the network and DTE Drop/Insert
(DSX-1) interfaces.
•propPointToPointSerial(22) – Used for the
synchronous data ports. Used for the MODEM or
COM port when the port is not configured as the
SNMP management interface.
•ppp(23) – Used for the MODEM, AUX, or COM
port when the port is configured for PPP.
•slip(28) – Used for the MODEM or COM port
when the port is configured for SLIP.
Interface Group – “ifMtu” Object (ifEntry 4)
This object identifies the largest datagram that can be
sent or received on the interface. It is applicable only to
the interface configured as the SNMP management link.
This object is zero for all other interfaces.
Interface Group – “ifSpeed” Object (ifEntry 5)
This object provides the interface’s current bandwidth
in bits per second. The value of this object for each
interface is specified as follows:
T1 Interfaces: 1,544,000 bps.
COM, AUX,
and MODEM: The currently configured data rate
for the port.
Data Ports: The currently configured data rate
for the port when the port is
allocated to one of the T1
interfaces. If the port is not
allocated the data rate is defined as
zero.
Interface Group – “ifAdminStatus” Object(ifEntry 7)
This object specifies the desired state (configuration)
of the interface. This object is supported only for the
COM and MODEM ports. It provides the ability to switch
between using the port for SNMP or ASCII operations
(dial-out, front panel emulation). The value of this object
will not affect the state of any of the interfaces on the
DSU/CSU other than the COM or MODEM port. Only
the following values are supported by the DSU/CSU:
•up(1) – The SNMP management link is active on
the COM or MODEM port.
•testing(3) – The SNMP management link is inactive
on the COM or MODEM port. These ports can be
used for proprietary ASCII functions.