Cisco ASR Showing 95% 98% Memory Used.

Since we are seeing very frequent issue with ASR Memory Consumption . Let me try to explain in a little details.

Issue: Cisco ASR Showing 95 % / 98 %  Memory Consumed.

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Troubleshooting :-

When we checked with PollerChecker Tool we found no other Memory Poller are been responded by the Device.

SolarWinds Knowledge Base :: How to Use the Poller Checker Tool

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ONLY Responded Memory Poller is CiscoGen3

We then checked from the CiscoGen3 Memory poller i found following .

EXPLANATION OF EACH OID TABLE FUNCTION

cisco MemoryPoolName 1.3.6.1.4.1.9.9.48.1.1.1.2

Cisco ciscoMemoryPoolUsed 1.3.6.1.4.1.9.9.48.1.1.1.5

Cisco CiscoMemoryPoolFree 1.3.6.1.4.1.9.9.48.1.1.1.6

NAME OF MEMORY

.1.3.6.1.4.1.9.9.48.1.1.1.2.1 = STRING: "processor"

.1.3.6.1.4.1.9.9.48.1.1.1.2.6 = STRING: "reserved"

.1.3.6.1.4.1.9.9.48.1.1.1.2.7 = STRING: "image"

TOTAL MEMORY USED BY EACH NAME

.1.3.6.1.4.1.9.9.48.1.1.1.5.1 = GAUGE32: 1791774344

.1.3.6.1.4.1.9.9.48.1.1.1.5.6 = GAUGE32: 134217728

.1.3.6.1.4.1.9.9.48.1.1.1.5.7 = GAUGE32: 66994200

TOTAL PORTION OF MEMORY FREE

.1.3.6.1.4.1.9.9.48.1.1.1.6.1 = GAUGE32: 86892544

.1.3.6.1.4.1.9.9.48.1.1.1.6.6 = GAUGE32: 0

.1.3.6.1.4.1.9.9.48.1.1.1.6.7 = GAUGE32: 0

CALCULATION :

TOTAL USED MEMORY

1791774344 + 134217728 + 66994200 = 1992386272

TOTAL FREE MEMORY

0+0+86892544 = 86892544

TOTAL MEMORY

1992386272 + 86892544 = 2079278816

% MEMORY  UTILIZATION

1992386272 % 2079278816  = 95.8 %

/// <summary>

/// Memory poller for devices which support CISCO-MEMORY-POOL MIB (various Cisco devices)

/// <support pollertype="N.Memory.SNMP.CiscoGen3">

/// Poller utilizes GetSubtree request to gather used memory using OID:

/// ciscoMemoryPoolUsed = 1.3.6.1.4.1.9.9.48.1.1.1.5

/// Poller utilizes GetSubtree request to gather free memory using OID:

/// ciscoMemoryPoolFree = 1.3.6.1.4.1.9.9.48.1.1.1.6

/// Used memory is computed as SUM of all ciscoMemoryPoolUsed returned values.

/// Free memory is computed as SUM of all ciscoMemoryPoolFree returned values.

/// Total memory is computed as SUM of used and free memory.

Conclusion:-

By calculation above provided by the Node OID tables values .

Orion is marked the memory correctly by consuming 95% .

However We found the device is responded to following Poller for memory calculation other then the standard Cisco .CISCO-ENHANCED-MEMPOOL-MIB

Resolution

We have created Device Poller for such devices (attached )

Cisco ASR Memory Poller is attached .

Download  .

Go to Orion Web page > Settings > Manage Nodes >

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Import the Poller

You will Notice "Cisco ASR Devices" poller will be included

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Now go to the Node and do "List Resources "

Select the "Cisco ASR Devices" Poller

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> Submit

Leave the System running for 10 ~ 15 min for the polling .

confirmed the system is now showing correct memory .

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