Specifications
302 Implementing IBM System Networking 10Gb Ethernet Switches
etherStatsBroadcastPkts: 4380
etherStatsMulticastPkts: 6612
etherStatsCRCAlignErrors: 22
etherStatsUndersizePkts: 0
etherStatsOversizePkts: 0
etherStatsFragments: 2
etherStatsJabbers: 0
etherStatsCollisions: 0
etherStatsPkts64Octets: 27445
etherStatsPkts65to127Octets: 12253
etherStatsPkts128to255Octets: 1046
etherStatsPkts256to511Octets: 619
etherStatsPkts512to1023Octets: 7283
etherStatsPkts1024to1518Octets: 38
RMON Group 2: History
You can use the RMON History Group to sample and archive Ethernet statistics for a specific
interface during a specific time interval. History sampling is done per port.
Data is stored in buckets, which store data gathered during discreet sampling intervals. At
each configured interval, the History index takes a sample of the current Ethernet statistics,
and places them into a bucket. History data buckets are in dynamic memory. When the switch
is rebooted, the buckets are emptied.
Requested buckets are the number of buckets, or data slots, requested by the user for each
History Group. Granted buckets are the number of buckets granted by the system, based on
the amount of system memory available. The system grants a maximum of 50 buckets.
You can use an SNMP browser to view History samples.
History MIB Object ID
The type of data that can be sampled must be of an ifIndex object type, as described in
RFC 1213 (http://www.ietf.org/rfc/rfc1213.txt) and RFC 1573
(http://www.ietf.org/rfc/rfc1573.txt). The most common data type for the History
sample is as follows:
1.3.6.1.2.1.2.2.1.1.<x>
The last digit (x) represents the number of the port to monitor.
7.3.4 Management applications
After you set up the logs, either with Syslog or SNMP, you can now receive and browse them
in Network Management System or any monitoring application. Because IBM switches use
standard protocols to format and send the logs, you can access them with any management
software. In this section, we how to access logs from your devices from within IBM System
Networking Element Manager and IBM Systems Director software.
Important: RMON port statistics must be enabled for the port before an RMON History
Group can monitor the port.