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SNMP Walk for extremePortUtilizationAvgBw mib returns different real value

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TitleSNMP Walk for extremePortUtilizationAvgBw mib returns different real value
Question
  • Does SNMP Walk for extremePortUtilizationAvgBw mib returns different real value in EXOS version 15 and 16?
Environment
  • EXOS 15.x & 16.x
  • SNMP Walk
  • Port Bandwidth Utilization
Answer
  • In EXOS 15.x version, the OID for  "extremePortUtilizationAvgBw" returns decimal value in 2 numbers when polling the information from SnmpWalk.
For example: 
X460-24t.1 # show port 1 configuration no-refresh
Port Configuration
Port     Virtual    Port  Link  Auto   Speed      Duplex   Flow  Load   Media
             router     State State Neg  Cfg Actual Cfg Actual Cntrl Master Pri Red
================================================================================
1        VR-Default  E      A    ON  AUTO  1000 FULL FULL    SYM     1  UTP
================================================================================

X460-24t.2 # show ports 1 utilization bandwidth
Port     Link    Link   Rx             Peak Rx       Tx            Peak Tx
         State   Speed  % bandwidth    % bandwidth   % bandwidth   % bandwidth
================================================================================
1         A       1000      47.50          80.00          0.00            0.00
================================================================================

$ snmpget -v 2c -c P28nCr X460-24t iso.3.6.1.4.1.1916.1.4.5.1.2.1001
SNMPv2-SMI::enterprises.1916.1.4.5.1.2.1001 = INTEGER: 47
  • From EXOS 16.1 and higher, instead of returning a value in 2 numbers (0-100), it now returns the decimal value in 4 numbers.(which we can split into percentage ie:9999 to 99.99%). Hence giving more accurate value for port bandwidth utilization.
For example:
$ snmpget -v 2c -c P28nCr X460-24t iso.3.6.1.4.1.1916.1.4.5.1.2.1001
SNMPv2-SMI::enterprises.1916.1.4.5.1.2.1001 = INTEGER: 4750



 
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