Brocade Communications Systems Brocade ICX 6650 - Manual (Page 271)

Brocade ICX 6650 Administration Guide 253
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RMON support
11
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.
Brocade(config)#rmon history 1 interface ethernet 1/1/1 buckets 10 interval 10
owner nyc02
Syntax: rmon history interface [ ethernet //] buckets
interval owner
Specify the Ethernet port in the // format. Stack-unit is 1.
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.
Brocade(config)#rmon alarm 1 ifInOctets.6 10 delta rising-threshold 100 1 falling
threshold 50 1 owner nyc02
Syntax: rmon alarm
owner
Event (RMON group 9)
There are two elements to the Event Group—the event control table and the event log table.