ACCULINK 316x DSU/CSU
4-10 January 1997 3160-A2-GB21-50
SNMP Traps
SNMP traps are unsolicited messages that are sent
from the DSU/CSU to an SNMP manager when the
DSU/CSU detects certain pre-specified conditions. These
traps enable the SNMP manager to monitor the state of
the network.
The SNMP Trap configuration option must be enabled
for trap messages to be sent over the communications
link. You must specify the number of SNMP managers
that are to receive traps from this DSU/CSU, an IP
address for each SNMP manager specified, and the type
of traps to be sent from this DSU/CSU. For more
information, refer to Appendix C, Configuration Options,
and the Configuring SNMP Traps section in Chapter 3,
Operation.
Trap types consist of the following:
•General traps – include warmStart and
authenticationFailure. The DSU/CSU sends a
warmStart trap after it has been reset to indicate
that it has just reinitialized itself. The DSU/CSU
sends an authenticationFailure trap when it has
received an SNMP protocol message that has not
been properly authenticated. These traps are set by
the Gen Trap configuration option.
•Enterprise Specific traps – signify that the
DSU/CSU has recognized an enterprise-specific
event. See Table 4-4 for enterprise-specific traps.
These traps are set by the Entp Trap configuration
option.
•Link Traps – identify the condition of the
communications interface, either linkDown (one of
the communications interfaces has failed) or linkUp
(one of the communications interfaces has just
come up). These traps are set by the Link Trap
configuration option. The communications
interfaces for which these traps can be generated
are specified by the Trap I/F configuration option.
Table 4-5 defines traps for each interface.
Table 4-4
Enterprise-Specific Trap Definitions
Trap Value Event
enterpriseClockFail(1) The currently configured
master clock source has
failed.
enterpriseSelfTestFail(2) A DSU/CSU hardware
failure is detected at
self-test. This trap is
generated after DSU/CSU
initialization.
enterpriseDeviceFail(3) An internal DSU/CSU
failure is detected by the
operating software.
enterpriseTestStart(5) A test is initiated.
enterpriseConfigChange(6) A configuration option is
changed.
enterpriseTestClear(105) A test is concluded.
Table 4-5
SNMP Trap per Interface
Interface Trap Meaning
T1 Network Up = No alarm or test
conditions.
Down = Alarm or test
conditions.
DTE Drop/Insert (DSX-1) Up = No alarm or test
conditions, and the
interface is enabled.
Down = Alarm or test
conditions, or the interface
is disabled.
Synchronous Data Ports Up = No test conditions,
the port is assigned to a
network interface, and both
CTS and DSR are ON.
Down = Test conditions,
the port is unassigned, or
either CTS or DSR is off.