Brocade FastIron Ethernet Switch Administration Guide - Manual (Page 243)

History (RMON group 2)
All active ports by default will generate two history control data entries per active Brocade Layer 2
Switch port or Layer 3 Switch interface. An active port is defined as one with a link up. If the link goes
down the two entries are automatically deleted.
Two history entries are generated for each device:
• A sampling of statistics every 30 seconds
• A sampling of statistics every 30 minutes
The history data can be accessed and displayed using any of the popular RMON applications
A sample RMON history command and its syntax is shown below.
device(config)#rmon history 1 interface 1 buckets 10 interval 10 owner nyc02
Syntax: rmon historyentry-number interface port buckets number interval sampling-interval owner
text-string
You can modify the sampling interval and the bucket (number of entries saved before overwrite) using
the CLI. In the above example, owner refers to the RMON station that will request the information.
NOTE
To review the control data entry for each port or interface, enter the show rmon history command.
Alarm (RMON group 3)
Alarm is designed to monitor configured thresholds for any SNMP integer, time tick, gauge or counter
MIB object. Using the CLI, you can define what MIB objects are monitored, the type of thresholds that
are monitored (falling, rising or both), the value of those thresholds, and the sample type (absolute or
delta).
An alarm event is reported each time that a threshold is exceeded. The alarm entry also indicates the
action (event) to be taken if the threshold be exceeded.
A sample CLI alarm entry and its syntax is shown below.
device(config)#rmon alarm 1 ifInOctets.6 10 delta rising-threshold 100 1 falling
threshold 50 1 owner nyc02
Syntax: rmon alarm entry-number MIB-object. interface numsampling timesample type-threshold
type-threshold value event number -threshold type-threshold valueevent-number owner text-string
Event (RMON group 9)
There are two elements to the Event Group--the event control table and the event log table .
The event control table defines the action to be taken when an alarm is reported. Defined events can be
found by entering the CLI command, show event. The Event Log Table collects and stores reported
events for retrieval by an RMON application.
A sample entry and syntax of the event control table is shown below.
device(config)#rmon event 1 description ‘testing a longer string’ log-and-trap public
owner nyc02
Syntax: rmon eventevent-entry description text-string {log | trap | log-and-trap} owner rmon-station
History (RMON group 2)
FastIron Ethernet Switch Administration Guide 243
53-1003075-02