Specifications

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Catalyst 6500 Series Switch and Cisco 7600 Series Router Network Analysis Module Installation and Configuration Note

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Chapter 3 Getting Started

Operating-System-Independent Configuration

These sections describe the NAM configurations that are not dependent on the switch operating system.

Configuring Automatic RMON Collections

RMON collections can be configured explicitly through SNMP by a management station on some data

sources. Collections that are explicitly configured through SNMP take precedence over autostart

collections, so if both collections are configured, only the explicitly configured collections are started

on each data source when the NAM initializes.

You can specify that some collections are automatically configured on every available data source

(including all known VLANs) whenever the NAM is initialized by using the autostart command.

Note We recommend that you explicitly configure those collections that you require instead of using autostart

to reduce the possibility of performance degradation due to many collections being started for each data

source.

Note When you enter the autostart command, you must reboot the NAM for that command to take effect.

The following collection types can be started automatically:

• addressMap—addressMapTable from RMON2-MIB (RFC 2021)

If the NMS never sets the addressMapMaxDesiredEntries scalar, then the NAM uses the value -1

(for no limit).

• art—artControlTable from draft-warth-rmon2-artmib-01.txt

• etherStat—etherStatsTable from RMON-MIB (RFC 1757)

• prioStats—smonPrioStatsControlTable from SMON-MIB (RFC 2613)

• vlanStats—smonVlanStatsControlTable from SMON-MIB (RFC 2613)

For example, each dataSource (interface or VLAN) is configured with an etherStatsEntry (from

RMON-1) after you enter the autostart etherstats enable command and reboot the NAM. The

etherStatsOwner field is set to the monitor value.

The automatic start process occurs after you set up any collections that were explicitly created through

SNMP by a management station and stored in the NVRAM in the NAM. Automatic start collections are

not configured on data sources that already have a collection of that type configured through SNMP.

To enable collections for the automatic start process, do the following:

• Enable the etherStat collection type by entering this command from the root account of the NAM:

root@localhost# autostart etherstat enable

• Enable the addressMap collection type by entering this command from the root account of the NAM:

root@localhost# autostart addressmap enable

• Enable the prioStats collection type by entering this command from the root account of the NAM:

root@localhost# autostart priostats enable