NMS-IPSLA-MIB

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Last Updated: 20090317

Category: OAM

Description: Monitors NMS Communications IP SLA probes for network performance measurement including latency and jitter.

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What Is NMS-IPSLA-MIB?

NMS-IPSLA-MIB is a private enterprise MIB from NMS Communications implementing IP Service Level Agreement (SLA) style active-probe measurements, rooted in nmsIpslaJitterObjects and nmsIpslaEchoObjects, to measure network performance such as round-trip latency, jitter, and packet loss between the device and a target host. It exposes configuration for defining echo (ping-like) and jitter probes plus the resulting measurement results, giving visibility into network path quality rather than the device's own internal hardware. As a network/software performance-monitoring MIB, it lets an operator track latency and jitter trends toward a critical destination (such as a VoIP gateway or remote PBX) and detect when those metrics exceed thresholds that would degrade voice or real-time traffic quality. It parallels the concepts of the IETF DISMAN-PING-MIB and vendor IP SLA / RTT-monitoring MIBs, adapting similar echo/jitter measurement semantics into NMS Communications equipment. It is typically deployed on NMS Communications voice/network gateways where WAN or VoIP path quality (latency, jitter, loss) needs continuous active monitoring. Engineers can download the NMS-IPSLA-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in NMS-IPSLA-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

NMS Communications voice/network gateway

Monitoring Examples

An operator configures a probe under nmsIpslaEchoObjects to periodically measure round-trip time to a remote gateway, and a probe under nmsIpslaJitterObjects to measure jitter and packet loss on the same path used for VoIP traffic. A rising jitter value or an echo probe reporting timeouts would explain voice-quality complaints (choppy audio, dropped calls) before end users escalate. Because only the two object-group roots were included in this extract, the specific result/config column names cannot be cited with certainty.

What Can Be Monitored

round-trip latency (echo probe results)
jitter measurements
packet loss on monitored path

Imported Objects

From NMS-SMI

nmsMgmt

OBJECT-IDENTITY

From RFC1155-SMI

Gauge
TimeTicks

From RFC1213-MIB

DisplayString

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

PhysAddress

How to Use in IPNetwork Monitor

Example using nmsIpslaJobSuccesses OID:

Select an NMS Communications voice/network gateway (IP SLA echo/jitter probes) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type nmsIpslaJobSuccesses into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The Ipsla job entry's success times. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value drifts significantly from its normal baseline, since an unexpected change often points to a real underlying issue. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
nmsIpslaMIB	1.3.6.1.4.1.11606.10.9.102			Definition for host
nmsIpslaJitterObjects	1.3.6.1.4.1.11606.10.9.102.1
ipslaJitterTable	1.3.6.1.4.1.11606.10.9.102.1.1		not-accessible	the index of ipsla udp-jitter Table.
nmsIpslaJitterEntry	1.3.6.1.4.1.11606.10.9.102.1.1.1		not-accessible	An entry (conceptual row) containing information about a ipsla job.
INT nmsIpslaJobEntryIndex	1.3.6.1.4.1.11606.10.9.102.1.1.1.1	INTEGER	read-only	The index for this ipsla job entry.
INT nmsIpslaJobSuccessesEx	1.3.6.1.4.1.11606.10.9.102.1.1.1.2	INTEGER	read-only	The Ipsla job entry's success times.
INT nmsIpslaJobFailures	1.3.6.1.4.1.11606.10.9.102.1.1.1.3	INTEGER	read-only	The Ipsla job entry's failure times.
INT nmsIpslaJitterSamples	1.3.6.1.4.1.11606.10.9.102.1.1.1.4	INTEGER	read-only	The Ipsla udp-jitter's samples .
INT nmsIpslaJitterSrc2DstMin	1.3.6.1.4.1.11606.10.9.102.1.1.1.5	INTEGER	read-only	The Ipsla udp min jitter for source to destination.
INT nmsIpslaJitterSrc2DstMax	1.3.6.1.4.1.11606.10.9.102.1.1.1.6	INTEGER	read-only	The Ipsla udp max jitter for source to destination.
INT nmsIpslaJitterSrc2DstAvg	1.3.6.1.4.1.11606.10.9.102.1.1.1.7	INTEGER	read-only	The Ipsla udp average jitter for source to destination.
INT nmsIpslaJitterDst2SrcMin	1.3.6.1.4.1.11606.10.9.102.1.1.1.8	INTEGER	read-only	The Ipsla udp min jitter for destination to source.
INT nmsIpslaJitterDst2SrcMax	1.3.6.1.4.1.11606.10.9.102.1.1.1.9	INTEGER	read-only	The Ipsla udp max jitter for destination to source.
INT nmsIpslaJitterDst2SrcAvg	1.3.6.1.4.1.11606.10.9.102.1.1.1.10	INTEGER	read-only	The Ipsla udp average jitter for destination to source.
INT nmsIpslaJitterRttMin	1.3.6.1.4.1.11606.10.9.102.1.1.1.11	INTEGER	read-only	The Ipsla udp jitter's min round trip time
INT nmsIpslaJitterRttMax	1.3.6.1.4.1.11606.10.9.102.1.1.1.12	INTEGER	read-only	The Ipsla udp jitter's max round trip time
INT nmsIpslaJitterRttAvg	1.3.6.1.4.1.11606.10.9.102.1.1.1.13	INTEGER	read-only	The Ipsla udp jitter's average round trip time
nmsIpslaEchoObjects	1.3.6.1.4.1.11606.10.9.102.2
ipslaEchoTable	1.3.6.1.4.1.11606.10.9.102.2.1		not-accessible	the index of ipsla udp-jitter Table.
nmsIpslaEchoEntry	1.3.6.1.4.1.11606.10.9.102.2.1.1		not-accessible	An entry (conceptual row) containing information about a ipsla job.
INT nmsIpslaEchoTargetPort	1.3.6.1.4.1.11606.10.9.102.2.1.1.1	INTEGER	read-only	The udp echo job's target port.
INT nmsIpslaEchoSourcePort	1.3.6.1.4.1.11606.10.9.102.2.1.1.2	INTEGER	read-only	The udp echo job's source port.
INT nmsIpslaEchoRtt	1.3.6.1.4.1.11606.10.9.102.2.1.1.3	INTEGER	read-only	The udp echo's round trip time.
INT nmsIpslaEchoProbeSent	1.3.6.1.4.1.11606.10.9.102.2.1.1.4	INTEGER	read-only	The times of the udp echo probe sent.
INT nmsIpslaEchoProbeCompletion	1.3.6.1.4.1.11606.10.9.102.2.1.1.5	INTEGER	read-only	The times of udp echo successes.

RFC description

Provides IP SLA UDP jitter test measurements and performance metrics.

Start monitoring NMS Communications voice/network gateway (IP SLA echo/jitter probes) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download NMS-IPSLA-MIB