ERICSSON-ROUTER-MEMORY-MIB

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Organization: Ericsson AB.

Last Updated: 2015-01-14

Category: Vendor: Ericsson

Description: Monitors physical and virtual memory utilization across route processors and line cards on Ericsson routers.

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What Is ERICSSON-ROUTER-MEMORY-MIB?

ERICSSON-ROUTER-MEMORY-MIB monitors system memory usage across route processors, line cards, and software modules ("SMS" system management subsystem) on Ericsson SmartEdge/SM/SSR routers. It exposes two memory tables: one detailing per-module memory-manager statistics (free bytes, bytes in use, blocks in use, cumulative blocks allocated) and a general per-module memory table, both indexed by module identifier. This is squarely a hardware/software health-monitoring MIB: operators track eriRouterSmsMemoryFreeBytes and eriRouterSmsMemoryBytesInUse to catch memory exhaustion or leaks on a specific module before they cause process crashes or a card reload, and eriRouterMemoryMIBNotifications provides trap-based alerting on memory-related conditions. It's a standalone Ericsson MIB with no dependency on external memory-management standards, reflecting the router's internal SMS architecture. It's deployed on Ericsson SmartEdge/SSR routers in service-provider networks, where ERICSSON-ROUTER-MEMORY-MIB SNMP monitoring helps catch memory exhaustion on a line card or route processor before it risks a service-affecting reload.

IPNetwork Monitor allows you to monitor SNMP objects defined in ERICSSON-ROUTER-MEMORY-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

Ericsson SmartEdge Multi-service Edge Router (MSER)
Ericsson Smart Service Router (SSR)
Ericsson SM Metro Ethernet Service Transport platform

Monitoring Examples

An operator polls eriRouterSmsMemoryTable/eriRouterSmsMemoryEntry, indexed by eriRouterSmsMemoryIndex, comparing eriRouterSmsMemoryFreeBytes against eriRouterSmsMemoryBytesInUse for a given eriRouterSmsMemoryModule to spot a module trending toward exhaustion. A steadily rising eriRouterSmsMemoryCumulBlocks alongside falling free bytes on one module, without a corresponding traffic increase, suggests a memory leak in that module's software, and a resulting trap from eriRouterMemoryMIBNotifications would prompt proactive intervention before the module crashes.

What Can Be Monitored

free memory bytes per module
memory bytes in use
memory blocks in use
cumulative memory blocks allocated
memory usage notifications

Imported Objects

From ERICSSON-ROUTER-SMI

eriRouterMgmt

OBJECT-IDENTITY

From ERICSSON-ROUTER-TC

EriRouterKBytes

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

OIDs

OID symbolic	OID numeric	Type	Access	Description
eriRouterMemoryMib	1.3.6.1.4.1.193.218.2.16			Defines the objects necessary to obtain information allowing monitoring of system memory usage in a network device.
eriRouterMemoryMIBNotifications	1.3.6.1.4.1.193.218.2.16.0
eriRouterMemoryMIBObjects	1.3.6.1.4.1.193.218.2.16.1
eriRouterSmsMemoryTable	1.3.6.1.4.1.193.218.2.16.1.1		not-accessible	This table contains the objects which identify information about SMS memory usage. This table has been obsoleted. The new eriRouterMemoryTable must be used instead.
eriRouterSmsMemoryEntry	1.3.6.1.4.1.193.218.2.16.1.1.1		not-accessible	A conceptual row in the eriRouterSmsMemoryTable. This Entry has been obsoleted. The new eriRouterMemoryEntry must be used instead.
U32 eriRouterSmsMemoryIndex	1.3.6.1.4.1.193.218.2.16.1.1.1.1	Unsigned32	not-accessible	A unique identifier for an entry in this table.
STR eriRouterSmsMemoryModule	1.3.6.1.4.1.193.218.2.16.1.1.1.2	SnmpAdminString	read-only	The name of the module. This name is the same as that which would be displayed via the `show memory' CLI command. Examples would be CE, FE, SM 2, CM 3.
U32 eriRouterSmsMemoryFreeBytes	1.3.6.1.4.1.193.218.2.16.1.1.1.3	Unsigned32	read-only	The number of unused bytes of memory in this entry.
U32 eriRouterSmsMemoryBytesInUse	1.3.6.1.4.1.193.218.2.16.1.1.1.4	Unsigned32	read-only	The number of bytes of memory in use in this entry.
U32 eriRouterSmsMemoryBlocksInUse	1.3.6.1.4.1.193.218.2.16.1.1.1.5	Unsigned32	read-only	The number of blocks of memory in use in this entry. A block of memory is the amount of memory returned by a single call to the memory allocation routine in AOS. Hence the size of a block of memory is variable. This statistic can be used to check for memory leaks. One possible strategy is to note the value, do some operations, undo the operations, then check the value again - the start and end values should match. If they do not, there may be a memory leak.
U32 eriRouterSmsMemoryCumulBlocks	1.3.6.1.4.1.193.218.2.16.1.1.1.6	Unsigned32	read-only	The cumulative blocks count for this entry. It is an indication of how many times the memory allocation in AOS has been called since the system booted. It can be used to measure the expense of an operation in terms of calls to allocate memory, which are fairly expensive in terms of CPU time.
eriRouterMemoryTable	1.3.6.1.4.1.193.218.2.16.1.2		not-accessible	This table contains the objects which identify information about memory usage.
eriRouterMemoryEntry	1.3.6.1.4.1.193.218.2.16.1.2.1		not-accessible	A conceptual row in the eriRouterMemoryTable.
U32 eriRouterMemoryIndex	1.3.6.1.4.1.193.218.2.16.1.2.1.1	Unsigned32	not-accessible	A unique identifier for an entry in this table.
STR eriRouterMemoryModule	1.3.6.1.4.1.193.218.2.16.1.2.1.2	SnmpAdminString	read-only	The name of the module on which this memory resides.
ERI eriRouterMemoryFreeKBytes	1.3.6.1.4.1.193.218.2.16.1.2.1.3	EriRouterKBytes	read-only	The size of unused memory in this entry.
ERI eriRouterMemoryKBytesInUse	1.3.6.1.4.1.193.218.2.16.1.2.1.4	EriRouterKBytes	read-only	The size of memory in use in this entry.
U32 eriRouterMemoryBlocksInUse	1.3.6.1.4.1.193.218.2.16.1.2.1.5	Unsigned32	read-only	The number of blocks of memory on this module which is in use. A block of memory is a unit of physical/virtual memory that can be allocated or freed by the user. This statistic can be used to check for memory leaks. One possible strategy is to note the value, do some operations, undo the operations, then check the value again - the start and end values should match. If they do not, there may be a memory leak.
U32 eriRouterMemoryCumulBlocks	1.3.6.1.4.1.193.218.2.16.1.2.1.6	Unsigned32	read-only	The cumulative blocks count for this entry. For example, in some systems, this indicates how many times the memory allocation routine has been called since the system booted. Then, this can be used to measure the expense of an operation because the calls to allocate memory are often considered to be cpu-intensive.
eriRouterMemoryMIBConformance	1.3.6.1.4.1.193.218.2.16.2
eriRouterSmsMemoryCompliances	1.3.6.1.4.1.193.218.2.16.2.1
eriRouterSmsMemoryCompliance	1.3.6.1.4.1.193.218.2.16.2.1.1			The compliance statement for SNMP entities which implement the SMS memory usage MIB.
eriRouterSmsMemoryGroups	1.3.6.1.4.1.193.218.2.16.2.2
eriRouterSmsMemoryGroup	1.3.6.1.4.1.193.218.2.16.2.2.1			The collection of objects providing SMS memory usage information.
eriRouterMemoryCompliances	1.3.6.1.4.1.193.218.2.16.2.3
eriRouterMemoryCompliance	1.3.6.1.4.1.193.218.2.16.2.3.1			The requirements for conformance to this Memory Usage MIB.
eriRouterMemoryGroups	1.3.6.1.4.1.193.218.2.16.2.4
eriRouterMemoryGroup	1.3.6.1.4.1.193.218.2.16.2.4.1			The collection of objects providing memory usage information.

RFC description

Ericsson router memory monitoring MIB for tracking system memory usage and heap utilization on routing devices.

Start monitoring Ericsson SmartEdge/SM/SSR router (Redback Networks heritage) (system memory usage per module) 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 ERICSSON-ROUTER-MEMORY-MIB

What Is ERICSSON-ROUTER-MEMORY-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description