Brocade Network Advisor SAN User Manual v12.3.0 - Manual (Page 1140)

1088 Brocade Network Advisor SAN User Manual
53-1003154-01
SAN historical performance data
28
Performance statistics counters
Table 84 details the formulas used to calculate performance statistics based on counter type and
protocol.
To calculate FC, GE, FCIP and TE port statistics, the Management application uses SNMP to query
the respective object identifiers (OID) (listed in
Table 84 ).
To calculate HBA and CNA statistics, the Management application uses APIs provided by HCM.
To calculate end-to-end monitor (EE monitor) statistics, the Management application uses HTTP to
obtain the TX, RX, and CRC error values.
The polling interval for historical graphs is 5 minutes. The polling interval for real-time graphs is
based on the granularity value (configured in the Real Time Graph dialog box).
TABLE 84 Performance statistic counters
Counter name Type Protocol Source OID value Formula
TX FC SNMP .1.3.6.1.3.94.4.5.1.6 TX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
RX FC SNMP .1.3.6.1.3.94.4.5.1.7 RX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
TX GE SNMP .1.3.6.1.2.1.31.1.1.1.10 TX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
RX GE SNMP .1.3.6.1.2.1.31.1.1.1.6 RX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
TX FCIP SNMP .1.3.6.1.2.1.31.1.1.1.10 TX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
RX FCIP SNMP .1.3.6.1.2.1.31.1.1.1.6 RX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
Uncompressed
Tx/Rx MB/sec FCIP SNMP .1.3.6.1.4.1.1588.4.1.1.6 (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
TX EE Monitors HTTP PortRX (variable from the
return html file) TX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
RX EE Monitors HTTP PortTX (variable from the
return html file) RX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
TX HBA, CNA HCM API N/A TX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
RX HBA, CNA HCM API N/A RX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
TX TE SNMP .1.3.6.1.2.1.31.1.1.1.6 TX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
RX TE SNMP .1.3.6.1.2.1.31.1.1.1.10 RX = (delta value 1 / (1000 * 1000)) /
(polling interval 2 )
TX% / RX% FC, GE,
HBA, CNA N/A N/A TX% or RX% = ((TX or RX) /
((105000000 * port speed)*
(polling interval
2 ))) * 100
If utilization is less than 1, the value is 0.0.