STREAMS-MIB

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Organization: Copestone Research Ltd

Last Updated: 1995-06-28

Category: Network Monitoring

Description: Monitors network data stream descriptors, flow classification, and per-stream traffic statistics.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is STREAMS-MIB?

STREAMS-MIB is a vendor-neutral module for managing the STREAMS subsystem, a kernel-level I/O framework historically found in Unix and Unix-like operating systems (e.g., System V-derived platforms), covering configuration and status of stream queues and message-buffer usage. It exposes data such as per-subsystem storage limits, queue counts, active stream counts, buffer-call counts, timeout counts, and message-block (mblk) usage. Its main value for monitoring is software/kernel-resource health: tracking whether the STREAMS subsystem is approaching its configured storage or queue limits, which can indicate resource exhaustion that would degrade network or terminal I/O performance on the host. It stands largely on its own as an operating-system-level MIB rather than depending on other networking MIBs. It is typically deployed on legacy Unix/Unix-like servers or network devices whose I/O stack is built on the STREAMS framework. Engineers can download the STREAMS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in STREAMS-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

vendor-neutral, standards-based MIB, not tied to a specific manufacturer
Unix/Unix-like host running a STREAMS-based network stack

Monitoring Examples

An admin polls the streamsAdmnTable/streamsAdmnEntry for a given streamsAdmnSubsystemIndex to check streamsAdmnNumStreams, streamsAdmnNumQueues, and streamsAdmnNumMblks against the configured streamsAdmnMaxStorage. A steady rise in streamsAdmnNumBufcalls or streamsAdmnNumTimeouts alongside falling headroom under streamsAdmnLoSafetyMark/streamsAdmnMidSafetyMark would indicate the STREAMS subsystem is running low on buffer resources and at risk of I/O stalls.

What Can Be Monitored

active stream count
queue count
storage utilization vs. max storage
buffer call count
timeout count
message block (mblk) usage

Imported Objects

From RFC1155-SMI

enterprises

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
aii	1.3.6.1.4.1.539
aiSLC2	1.3.6.1.4.1.539.16
streams	1.3.6.1.4.1.539.16.4			This MIB provides configuration and status information for a STREAMS subsystem.
streamsAdmnTable	1.3.6.1.4.1.539.16.4.1		not-accessible	This table contains configuration information, for a STREAMS Subsystem. There is one entry for each such such subsystem in a managed system.
streamsAdmnEntry	1.3.6.1.4.1.539.16.4.1.1		not-accessible	A list of STREAMS configuration values
I32 streamsAdmnSubsystemIndex	1.3.6.1.4.1.539.16.4.1.1.1	Integer32	read-write	T B S
I32 streamsAdmnMaxStorage	1.3.6.1.4.1.539.16.4.1.1.2	Integer32	read-write	T B S
I32 streamsAdmnNumQueues	1.3.6.1.4.1.539.16.4.1.1.3	Integer32	read-only	T B S
I32 streamsAdmnNumStreams	1.3.6.1.4.1.539.16.4.1.1.4	Integer32	read-write	T B S
I32 streamsAdmnNumBufcalls	1.3.6.1.4.1.539.16.4.1.1.5	Integer32	read-write	T B S
I32 streamsAdmnNumTimeouts	1.3.6.1.4.1.539.16.4.1.1.6	Integer32	read-write	T B S
I32 streamsAdmnNumMblks	1.3.6.1.4.1.539.16.4.1.1.7	Integer32	read-write	T B S
I32 streamsAdmnNumExtended	1.3.6.1.4.1.539.16.4.1.1.8	Integer32	read-write	T B S
I32 streamsAdmnLoSafetyMark	1.3.6.1.4.1.539.16.4.1.1.9	Integer32	read-write	T B S
I32 streamsAdmnMidSafetyMark	1.3.6.1.4.1.539.16.4.1.1.10	Integer32	read-write	T B S
I32 streamsAdmnNumBufs0	1.3.6.1.4.1.539.16.4.1.1.11	Integer32	read-write	T B S
I32 streamsAdmnNumBufs1	1.3.6.1.4.1.539.16.4.1.1.12	Integer32	read-write	T B S
I32 streamsAdmnNumBufs2	1.3.6.1.4.1.539.16.4.1.1.13	Integer32	read-write	T B S
I32 streamsAdmnNumBufs3	1.3.6.1.4.1.539.16.4.1.1.14	Integer32	read-write	T B S
I32 streamsAdmnNumBufs4	1.3.6.1.4.1.539.16.4.1.1.15	Integer32	read-write	T B S
I32 streamsAdmnNumBufs5	1.3.6.1.4.1.539.16.4.1.1.16	Integer32	read-write	T B S
I32 streamsAdmnNumBufs6	1.3.6.1.4.1.539.16.4.1.1.17	Integer32	read-write	T B S
I32 streamsAdmnNumBufs7	1.3.6.1.4.1.539.16.4.1.1.18	Integer32	read-write	T B S
I32 streamsAdmnNumBufs8	1.3.6.1.4.1.539.16.4.1.1.19	Integer32	read-write	T B S
I32 streamsAdmnNumBufs9	1.3.6.1.4.1.539.16.4.1.1.20	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs0	1.3.6.1.4.1.539.16.4.1.1.21	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs1	1.3.6.1.4.1.539.16.4.1.1.22	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs2	1.3.6.1.4.1.539.16.4.1.1.23	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs3	1.3.6.1.4.1.539.16.4.1.1.24	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs4	1.3.6.1.4.1.539.16.4.1.1.25	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs5	1.3.6.1.4.1.539.16.4.1.1.26	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs6	1.3.6.1.4.1.539.16.4.1.1.27	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs7	1.3.6.1.4.1.539.16.4.1.1.28	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs8	1.3.6.1.4.1.539.16.4.1.1.29	Integer32	read-write	T B S
I32 streamsAdmnSizeBufs9	1.3.6.1.4.1.539.16.4.1.1.30	Integer32	read-write	T B S
streamsStatsTable	1.3.6.1.4.1.539.16.4.2		not-accessible	This table contains run-time staus information, for a STREAMS Subsystem. There is one entry for each such such subsystem in a managed system.
streamsStatsEntry	1.3.6.1.4.1.539.16.4.2.1		not-accessible	A list of STREAMS Statistics
I32 streamsStatsSubsystemIndex	1.3.6.1.4.1.539.16.4.2.1.1	Integer32	read-only	The particular STREAMS subsystem on the host for which statistics are required.
I32 streamsStatsAllocStorage	1.3.6.1.4.1.539.16.4.2.1.2	Integer32	read-only	The amount of storage allocated to the STREAMS system for buffers, queues, etc
I32 streamsStatsQueuesConfig	1.3.6.1.4.1.539.16.4.2.1.3	Integer32	read-only	The number of queues configured in the running system. If dynamically, created, the number currently in existence
I32 streamsStatsQueuesInUse	1.3.6.1.4.1.539.16.4.2.1.4	Integer32	read-only	The number of queues currently in use
I32 streamsStatsQueuesUsed	1.3.6.1.4.1.539.16.4.2.1.5	Integer32	read-only	The number of queues used since the system was initialised
I32 streamsStatsQueuesMaxUsed	1.3.6.1.4.1.539.16.4.2.1.6	Integer32	read-only	The maximum number of queues concurrently in use at any time since the system was initialised
I32 streamsStatsQueuesFails	1.3.6.1.4.1.539.16.4.2.1.7	Integer32	read-only	The number of times a queue allocation request has been denied
I32 streamsStatsStreamsConfig	1.3.6.1.4.1.539.16.4.2.1.8	Integer32	read-only	The number of streams configured in the running system. If dynamically, created, the number currently in existence
I32 streamsStatsStreamsInUse	1.3.6.1.4.1.539.16.4.2.1.9	Integer32	read-only	The number of streams currently in use
I32 streamsStatsStreamsUsed	1.3.6.1.4.1.539.16.4.2.1.10	Integer32	read-only	The number of streams used since the system was initialised
I32 streamsStatsStreamsMaxUsed	1.3.6.1.4.1.539.16.4.2.1.11	Integer32	read-only	The maximum number of streams concurrently in use at any time since the system was initialised
I32 streamsStatsStreamsFails	1.3.6.1.4.1.539.16.4.2.1.12	Integer32	read-only	The number of times a stream allocation request has been denied
I32 streamsStatsBufcallsConfig	1.3.6.1.4.1.539.16.4.2.1.13	Integer32	read-only	T B S
I32 streamsStatsBufcallsInUse	1.3.6.1.4.1.539.16.4.2.1.14	Integer32	read-only	T B S
I32 streamsStatsBufcallsUsed	1.3.6.1.4.1.539.16.4.2.1.15	Integer32	read-only	T B S
I32 streamsStatsBufcallsMaxUsed	1.3.6.1.4.1.539.16.4.2.1.16	Integer32	read-only	T B S
I32 streamsStatsBufcallsFails	1.3.6.1.4.1.539.16.4.2.1.17	Integer32	read-only	T B S
I32 streamsStatsTimeoutsConfig	1.3.6.1.4.1.539.16.4.2.1.18	Integer32	read-only	T B S
I32 streamsStatsTimeoutsInUse	1.3.6.1.4.1.539.16.4.2.1.19	Integer32	read-only	T B S
I32 streamsStatsTimeoutsUsed	1.3.6.1.4.1.539.16.4.2.1.20	Integer32	read-only	T B S
I32 streamsStatsTimeoutsMaxUsed	1.3.6.1.4.1.539.16.4.2.1.21	Integer32	read-only	T B S
I32 streamsStatsTimeoutsFails	1.3.6.1.4.1.539.16.4.2.1.22	Integer32	read-only	T B S
I32 streamsStatsMblksConfig	1.3.6.1.4.1.539.16.4.2.1.23	Integer32	read-only	T B S
I32 streamsStatsMblksInUse	1.3.6.1.4.1.539.16.4.2.1.24	Integer32	read-only	T B S
I32 streamsStatsMblksUsed	1.3.6.1.4.1.539.16.4.2.1.25	Integer32	read-only	T B S
I32 streamsStatsMblksMaxUsed	1.3.6.1.4.1.539.16.4.2.1.26	Integer32	read-only	T B S
I32 streamsStatsMblksFails	1.3.6.1.4.1.539.16.4.2.1.27	Integer32	read-only	T B S
I32 streamsStatsExtendedConfig	1.3.6.1.4.1.539.16.4.2.1.28	Integer32	read-only	T B S
I32 streamsStatsExtendedInUse	1.3.6.1.4.1.539.16.4.2.1.29	Integer32	read-only	T B S
I32 streamsStatsExtendedUsed	1.3.6.1.4.1.539.16.4.2.1.30	Integer32	read-only	T B S
I32 streamsStatsExtendedMaxUsed	1.3.6.1.4.1.539.16.4.2.1.31	Integer32	read-only	T B S
I32 streamsStatsExtendedFails	1.3.6.1.4.1.539.16.4.2.1.32	Integer32	read-only	T B S
I32 streamsStatsBufs0Config	1.3.6.1.4.1.539.16.4.2.1.33	Integer32	read-only	T B S
I32 streamsStatsBufs0InUse	1.3.6.1.4.1.539.16.4.2.1.34	Integer32	read-only	T B S
I32 streamsStatsBufs0Used	1.3.6.1.4.1.539.16.4.2.1.35	Integer32	read-only	T B S
I32 streamsStatsBufs0MaxUsed	1.3.6.1.4.1.539.16.4.2.1.36	Integer32	read-only	T B S
I32 streamsStatsBufs0Fails	1.3.6.1.4.1.539.16.4.2.1.37	Integer32	read-only	T B S
I32 streamsStatsBufs1Config	1.3.6.1.4.1.539.16.4.2.1.38	Integer32	read-only	T B S
I32 streamsStatsBufs1InUse	1.3.6.1.4.1.539.16.4.2.1.39	Integer32	read-only	T B S
I32 streamsStatsBufs1Used	1.3.6.1.4.1.539.16.4.2.1.40	Integer32	read-only	T B S
I32 streamsStatsBufs1MaxUsed	1.3.6.1.4.1.539.16.4.2.1.41	Integer32	read-only	T B S
I32 streamsStatsBufs1Fails	1.3.6.1.4.1.539.16.4.2.1.42	Integer32	read-only	T B S
I32 streamsStatsBufs2Config	1.3.6.1.4.1.539.16.4.2.1.43	Integer32	read-only	T B S
I32 streamsStatsBufs2InUse	1.3.6.1.4.1.539.16.4.2.1.44	Integer32	read-only	T B S
I32 streamsStatsBufs2Used	1.3.6.1.4.1.539.16.4.2.1.45	Integer32	read-only	T B S
I32 streamsStatsBufs2MaxUsed	1.3.6.1.4.1.539.16.4.2.1.46	Integer32	read-only	T B S
I32 streamsStatsBufs2Fails	1.3.6.1.4.1.539.16.4.2.1.47	Integer32	read-only	T B S
I32 streamsStatsBufs3Config	1.3.6.1.4.1.539.16.4.2.1.48	Integer32	read-only	T B S
I32 streamsStatsBufs3InUse	1.3.6.1.4.1.539.16.4.2.1.49	Integer32	read-only	T B S
I32 streamsStatsBufs3Used	1.3.6.1.4.1.539.16.4.2.1.50	Integer32	read-only	T B S
I32 streamsStatsBufs3MaxUsed	1.3.6.1.4.1.539.16.4.2.1.51	Integer32	read-only	T B S
I32 streamsStatsBufs3Fails	1.3.6.1.4.1.539.16.4.2.1.52	Integer32	read-only	T B S
I32 streamsStatsBufs4Config	1.3.6.1.4.1.539.16.4.2.1.53	Integer32	read-only	T B S
I32 streamsStatsBufs4InUse	1.3.6.1.4.1.539.16.4.2.1.54	Integer32	read-only	T B S
I32 streamsStatsBufs4Used	1.3.6.1.4.1.539.16.4.2.1.55	Integer32	read-only	T B S
I32 streamsStatsBufs4MaxUsed	1.3.6.1.4.1.539.16.4.2.1.56	Integer32	read-only	T B S
I32 streamsStatsBufs4Fails	1.3.6.1.4.1.539.16.4.2.1.57	Integer32	read-only	T B S
I32 streamsStatsBufs5Config	1.3.6.1.4.1.539.16.4.2.1.58	Integer32	read-only	T B S
I32 streamsStatsBufs5InUse	1.3.6.1.4.1.539.16.4.2.1.59	Integer32	read-only	T B S
I32 streamsStatsBufs5Used	1.3.6.1.4.1.539.16.4.2.1.60	Integer32	read-only	T B S
I32 streamsStatsBufs5MaxUsed	1.3.6.1.4.1.539.16.4.2.1.61	Integer32	read-only	T B S
I32 streamsStatsBufs5Fails	1.3.6.1.4.1.539.16.4.2.1.62	Integer32	read-only	T B S
I32 streamsStatsBufs6Config	1.3.6.1.4.1.539.16.4.2.1.63	Integer32	read-only	T B S
I32 streamsStatsBufs6InUse	1.3.6.1.4.1.539.16.4.2.1.64	Integer32	read-only	T B S
I32 streamsStatsBufs6Used	1.3.6.1.4.1.539.16.4.2.1.65	Integer32	read-only	T B S
I32 streamsStatsBufs6MaxUsed	1.3.6.1.4.1.539.16.4.2.1.66	Integer32	read-only	T B S
I32 streamsStatsBufs6Fails	1.3.6.1.4.1.539.16.4.2.1.67	Integer32	read-only	T B S
I32 streamsStatsBufs7Config	1.3.6.1.4.1.539.16.4.2.1.68	Integer32	read-only	T B S
I32 streamsStatsBufs7InUse	1.3.6.1.4.1.539.16.4.2.1.69	Integer32	read-only	T B S
I32 streamsStatsBufs7Used	1.3.6.1.4.1.539.16.4.2.1.70	Integer32	read-only	T B S
I32 streamsStatsBufs7MaxUsed	1.3.6.1.4.1.539.16.4.2.1.71	Integer32	read-only	T B S
I32 streamsStatsBufs7Fails	1.3.6.1.4.1.539.16.4.2.1.72	Integer32	read-only	T B S
I32 streamsStatsBufs8Config	1.3.6.1.4.1.539.16.4.2.1.73	Integer32	read-only	T B S
I32 streamsStatsBufs8InUse	1.3.6.1.4.1.539.16.4.2.1.74	Integer32	read-only	T B S
I32 streamsStatsBufs8Used	1.3.6.1.4.1.539.16.4.2.1.75	Integer32	read-only	T B S
I32 streamsStatsBufs8MaxUsed	1.3.6.1.4.1.539.16.4.2.1.76	Integer32	read-only	T B S
I32 streamsStatsBufs8Fails	1.3.6.1.4.1.539.16.4.2.1.77	Integer32	read-only	T B S
I32 streamsStatsBufs9Config	1.3.6.1.4.1.539.16.4.2.1.78	Integer32	read-only	T B S
I32 streamsStatsBufs9InUse	1.3.6.1.4.1.539.16.4.2.1.79	Integer32	read-only	T B S
I32 streamsStatsBufs9Used	1.3.6.1.4.1.539.16.4.2.1.80	Integer32	read-only	T B S
I32 streamsStatsBufs9MaxUsed	1.3.6.1.4.1.539.16.4.2.1.81	Integer32	read-only	T B S
I32 streamsStatsBufs9Fails	1.3.6.1.4.1.539.16.4.2.1.82	Integer32	read-only	T B S

RFC description

STREAMS subsystem configuration and status information for Unix kernel stream management and queue monitoring.

Start monitoring vendor-neutral, standards-based MIB, Unix/Unix-like host running a STREAMS-based network stack (kernel I/O resource status) 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 STREAMS-MIB

What Is STREAMS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description