Bit Etherstatshighcapacity Table - Cisco ONS 15454 Reference Manual

Chapter 16 SNMP

16.10.3.4 64-Bit etherStatsHighCapacity Table

The Ethernet statistics group contains 64-bit statistics in the etherStatsHighCapacityTable, which
provides 64-bit RMON support for the HC-RMON-MIB. The etherStatsHighCapacityTable is an
extension of the etherStatsTable that adds 16 new columns for performance monitoring data in 64-bit
format. There is a one-to-one relationship between the etherStatsTable and etherStatsHighCapacityTable
when rows are created or deleted in either table.
16.10.4 History Control RMON Group
The History Control group defines sampling functions for one or more monitor interfaces in the
historyControlTable. The values in this table, as specified in RFC 2819, are derived from the
historyControlTable and etherHistoryTable.
16.10.4.1 History Control Table
The RMON is sampled at one of four possible intervals. Each interval, or period, contains specific
history values (also called buckets).
buckets.
The historyControlTable maximum row size is determined by multiplying the number of ports on a card
by the number of sampling periods. For example, an ONS 15454 E100 card contains 24 ports, which
multiplied by periods allows 96 rows in the table. An E1000 card contains 14 ports, which multiplied by
four periods allows 56 table rows.
Table 16-9
Sampling Periods
(historyControlValue Variable)
15 minutes
24 hours
1 minute
60 minutes
16.10.4.2 Row Creation in historyControlTable
The SetRequest PDU must be able to activate a historyControlTable row in one single-set operation. In
order to do this, the PDU must contain all needed values and have a status variable value of 2
(createRequest). All OIDs in the SetRequest PDU should be type OID.0 type for entry creation.
To create a SetRequest PDU for the historyControlTable, the following values are required:
•
•
•
•
•
OL-9217-01
RMON History Control Periods and History Categories
The historyControlDataSource and its desired value
The historyControlBucketsRequested and it desired value
The historyControlInterval and its desired value
The historyControlOwner and its desired value
The historyControlStatus with a value of createRequest (2)
Table 16-9 lists the four sampling periods and corresponding
Total Values, or Buckets
(historyControl Variable)
32
7
60
24
Cisco ONS 15454 Reference Manual, R7.0.1
16.10 16.10.4 History Control RMON Group
16-19