Alpha Technologies DSM3 for XM2 - Technical Manual - Manual (Page 49)

49 745-814-B8-001, Rev. C (03/2014)
6.2.2 SNMP Traps
Use of SNMP Traps allow the network manager to set conditions (alarms) under which the device
(or devices) autonomously report to the headend the existence of the pre-configured event. The
type of event determines the level of action to be taken.
1. Verify the IP address of the trap destination server(s) has been configured.
If the trap destination server requires configuration, refer to Section 3.3.3, Setting SNMP
Trap Destination Addresses for instructions.
2. Alarms must be configured. SNMP alarm traps sent by the Communications Module are
formatted according to the SCTE-HMS-ALARM-MIB specification with the following
information included:
SNMP Trap community string:
commonTrapCommunityString, OID 1.3.6.1.4.1.5591.1.3.1.11.0
Default value is "public"
Example Alarm Trap
The example below is a psTamper alarm trap indicating a discreteMinor alarm: Tamper is open.
Data from the raw trap will appear as shown below. Refer to Table 6-6, SNMP Alarm Trap
Varbinds and Explanations, for definitions of the varbinds.
Bindings (5)
Binding #1: commonPhysAddress.0 *** (octets) 00:90.EA.A0.01.4E (hex)
Binding #2: commonLogicalID.0 *** (octets) (123 Example Ave.)
Binding #3: alarmLogInformation.1 *** (octets) 00.00.00.76.07.10.06.0D.2B.06.01.04.01.AB.57.01.04.02.01.1B.01.02.01.02 (hex)
Binding #4: psTamper.1 *** (int32) open (2)
Binding #5: currentAlarmAlarmState *** (int32) caasDiscreteMinor(7)
Frame 441 (230 bytes ib wire, 230 bytes captured)
Ethernet II, Src: 192.168.1.77 (00:90:EA:A0:01:4E), Dst: 3com_0d:1d:d4 (00:10:5a:0dL1d:d4)
Internet Protocol, Src Port: 62481 (62481), Dst Port: snmptrap (162)
Simple Network Management Protocol
Version: 1 (0)
Community: PUBLIC
PDU type: TRAP-V1 (4)
Enterprise: 1.3.6.1.4.1.5591.1 (SNMPv2-SMI::enterprises.5591.1)
Agent address: 0.0.0.0 (0.0.0.0)
Trap type: ENTERPRISE SPECIFIC (6)
Specific trap type: 1
Timestamp: 2358751
Object identifier 1: 1.3.6.1.4.1.5591.1.3.2.7.0 (SNMPv2-SMI::enterprises.5591.1.3.2.7.0)
Value: Hex-STRING: 00 90 EA A0 0B 82
Object identifier 2: 1.3.6.1.4.1.5591.1.3.1.1.0 (SNMPv2-SMI::enterprises.5591.1.3.2.1.0)
Value STRING: “123 Example Ave.”
Object identifier 3: 1.3.6.1.4.1.5591.1.2.3.1.2.1 (SNMPv2-SMI::enterprises.5591.1.2.3.1.2.1)
Value: Hex-STRING: 00 00 00 76 07 10 06 0D 2B 06 01 04 01 AB 57 01 04 02 01 1B 01 02 01 02
Object identifier 4: 1.3.6.1.4.1.5591.1.4.2.1.27.1 (SNMPv2-SMI::enterprises.5591.1.3.2.1.0)
Value: INTEGER: 2
Object identifier 5: 1.3.6.1.4.1.5591.1.1.2.1.2 (SNMPv2-SMI::enterprises.5591.1..1.2.1.2)
Value: INTEGER: 7
Fig. 6-2, Sample Translated SNMP Alarm Trap
When viewed through a third-party trap receiver, the translated varbinds and data values will be
displayed in a format similar to the sample below:
Fig. 6-1, Sample Raw SNMP Alarm Trap
6.0 Data Management