The RMON Statistics Group page allows network managers to display RMON statistics for an interface. Interface statistic provide information about device utilization, and errors that occurred on the device. To open the RMON Statistics Group page:
Click Statistics/RMON > RMON > Statistics in the Tree View. The RMON Statistics Group page opens.
RMON Statistics Group Page
The RMON Statistics Group page contains the following information:
Interface—Indicates the interface type and number for which statistics are displayed. The possible field values are:
Port—Indicates that port specific statistics are displayed.
LAG—Indicates that LAG specific statistics are displayed.
Refresh Rate—Indicates the amount of time that passes before the RMON statistics are refreshed. The possible field values are:
15 Sec—Indicates that the RMON statistics are refreshed every 15 seconds.
30 Sec—Indicates that the RMON statistics are refreshed every 30 seconds.
60 Sec—Indicates that the RMON statistics are refreshed every 60 seconds.
No Refresh—Indicates that the RMON statistics are not automatically refreshed.
Drop Events—Indicates the amount of dropped events that have occurred on the interface since the counters were last cleared.
Received Octets—Indicates the amount of octets received on the interface since the counters were last cleared.
Received Packets—Indicates the amount of packets received on the interface since the counters were last cleared.
Broadcast Packets Received—Indicates the amount of Broadcast packets received on the interface since the counters were last cleared.
Multicast Packets Received—Indicates the amount of Multicast packets received on the interface since the counters were last cleared.
CRC& Align Errors—Indicates the amount of CRC and Align errors that have occurred on the interface since the counters were last cleared.
Undersize Packets—Indicates the amount of undersized packets received on the interface since the counters were last cleared.
Oversize Packets—Indicates the amount of oversized packets received on the interface since the counters were last cleared.
Fragments—Indicates the amount of fragments received on the interface since the counters were last cleared.
Jabbers—Indicates the amount of jabbers received on the interface since the counters were last cleared.
Collisions—Indicates the amount of collisions received on the interface since the counters were last cleared.
Frames of 64 Bytes—Indicates the amount of 64 byte packets received on the interface since the counters were last cleared.
Frames of 65-127 Bytes—Indicates the amount of 65-127 byte packets received on the interface since the counters were last cleared.
Frames of 128-255 Bytes—Indicates the amount of 128-255 byte packets received on the interface since the counters were last cleared.
Frames of 256-511 Bytes—Indicates the amount of 256-511 byte packets received on the interface since the counters were last cleared.
Frames of 512-1023 Bytes—Indicates the amount of 512-1023 byte packets received on the interface since the counters were last cleared.
Frames of 1024-1518 Bytes—Indicates the amount of 1024-1518 byte packets received on the interface since the counters were last cleared.
Viewing interface statistics:
Open the RMON Statistics Group page.
Select an interface type and number in the Interface field. The interface statistics
display in the RMON Statistics section.
Viewing RMON Statistics Using the CLI Commands
The following table summarizes the equivalent CLI commands for viewing fields displayed in the RMON Statistics Group page.
CLI Command
Description
show rmon statistics [ethernetinterface| port-channelport-channel-number]
Displays RMON ethernet Statistics.
The following is an example of the CLI command:
Console# show rmon statistics ethernet 1/e1
Port 1/e1
Dropped: 8
Octets: 878128 Packets: 978
Broadcast: 7 Multicast: 1
CRC Align Errors: 0 Collisions: 0
Undersize Pkts: 0 Oversize Pkts: 0
Fragments: 0 Jabbers: 0
64 Octets: 98 65 to 127 Octets: 0
128 to 255 Octets: 0 256 to 511 Octets: 0
512 to 1023 Octets: 491 1024 to 1518 Octets: 389
Viewing History Control Statistics
The RMON History Control page contains information about samples of RMON data taken from ports. The RMON History Control page controls the collection of these samples.
Click Statistics/RMON > History Control in the Tree View. The RMON History Control page opens.
RMON History Control Page
The RMON History Control page contains the following information:
History Entry No.—Specifies the History Control Table entry.
Source Interface—Indicates the source from which the history samples were taken. The possible field values are:
Port—Indicates the history samples were taken from a port.
LAG—Indicates the history samples were taken from a LAG.
Owner—Indicates the RMON station or user that requested the RMON information.
Max Number of Samples to Keep—Indicates the number of samples to be saved. The default value is 50.
Current Number of Samples—Indicates the current number of samples taken.
Sampling Interval—Indicates in seconds the time that samplings are taken from the ports. The possible values are 1-3600 seconds. The default is 1800 seconds (30 minutes).
Remove—Removes the History Control Table entry.
Checked—Removes the History Control Table entry.
Unchecked—Maintains the History Control Table entry.
Adding a History Control Entry:
Open the RMON History Control page.
Click Add. The Add History Entry page opens
.
Add History Entry
Define the History Entry No., Source Interface, Owner, Max No. of Samples to Keep,
and the Sampling Interval fields.
Click Apply Changes. The History Control Entry is added.
Modifying a History Control Table entry:
Open the RMON History Control page.
Select an RMON History Control Table entry in the History Index field.
Modify the Source Interface, Owner, Max Number of Samples to Keep, Number of
Current Samples, and/or the Sampling Interval fields.
Click Apply Changes. The RMON History Control Table entry is modified, and the
device is updated.
Displaying the History Control Table:
Open the RMON History Control page.
Click Show All. The History Control Table opens.
History Control Table
Deleting a History Control Table entry:
Open the RMON History Control page.
Select a History Control Table entry in the History Index field.
Check the Remove check box.
Click Apply Changes. The RMON History Control Table entry is deleted, and the
device is updated.
Viewing The RMON History Table
The RMON History Table contains interface-specific RMON statistical network samplings. Each table entry represents all counter values compiled during a single sample. To open the RMON History Table:
Click Statistics/RMON > RMON History > History Table in the Tree View.
RMON History Table
NOTE: Not all fields are shown in the RMON History Table.
The RMON History Table contains the following fields:
Sample No.—Indicates the specific sample that the information in the table reflects.
Drop Events—Indicates the number of dropped packets due to lack of network resources during the sampling interval. This may not represent the exact number of dropped packets, but rather the number of times dropped packets were detected.
Received Bytes (Octets)—Indicates the number of data octets, including bad packets, received on the network.
Received Packets—Indicates the number of packets received during the sampling interval.
Broadcast Packets—Indicates the number of good broadcast packets received during the sampling interval.
Multicast Packets—Indicates the number of good multicast packets received during the sampling interval.
CRC Align Errors—Indicates the number of packets received during the sampling session with a length 64-1518 octets.that have a bad Frame Check Sequence (FCS) with an integral number of octets or a bad FCS with a non-integral number.
Undersized Packets—Indicates the number of packets received that are less than 64 octets long during the sampling session.
Oversized Packets—Indicates the number of packets received that are more than 1518 octets long during the sampling session.
Fragments—Indicates the number of packets received that are less than 64 octets long and have a FCS during the sampling session.
Jabbers—Indicates the number of packets received that are more than 1518 octets long and had a FCS during the sampling session.
Collisions—Estimates the total number of packet collisions that occurred during the sampling session. Collisions are detected when repeater ports detect two or more stations transmitting simultaneously.
Utilization—Estimates the main physical layer network Description on an interface during the session sampling. The value is reflected in percentages with two decimal places.
Viewing statistics for a specific history entry:
Open the RMON History Table page.
Select a history entry in the History Table No. field. The entry statistics display in the
RMON History Table.
Viewing RMON History Statistics Using the CLI Commands
The following table contains the CLI commands for viewing RMON history statistics.
CLI Command
Description
rmon table-size history entries
Configures the maximum number of history table entries.
The RMON Events Control page allows network managers to view RMON events. The RMON Events table can be opened from the RMON Events Control table. To open the RMON Events Control page:
Click Statistics/RMON > RMON > Events in the Tree View. The RMON Events Control page opens.
RMON Events Control Page
The RMON Events Control page contains the following fields:
Event Entry—Indicates the event.
Community—Specifies the SNMP community to which the event belongs.
Description—Provides a user-defined event description.
Type—Describes the event type. The possible field values are:
Log—Indicates the event type is a log entry.
Trap—Indicates the event type is a trap.
Log and Trap—Indicates the event type is both a log entry and a trap.
Time— Indicates the time at which the event occurred.
Owner—Indicates the device or user that defined the event.
Remove—Removes the event from the Events Table.
Checked—Removes the event from the Events Table.
Unchecked—Maintains the event from the Events Table.
Adding a RMON Event:
Open the RMON Events Control page.
Click Add. The Add New RMON Event page opens.
Add New RMON Event
Define the New Event Index, Community, Description, Type, and Owner fields.
Click Apply Changes. The Event Table entry is added, and the device is updated.
Modifying a RMON Event:
Open the RMON Events Control page.
Select an Event Table entry in the Event Entry field.
Modify the Community, Description, Type, and/or Owner fields.
Click Apply Changes. The Event Table entry is modified, and the device is updated.
Displaying the RMON Event Table:
Open the RMON Events Control page.
Click Show All. The Event Table opens.
RMON Events Table
Deleting multiple RMON Event entries:
Open the RMON Events Control page.
Select an Event Table entry in the Event Index field.
Check the Remove check box.
Click Apply Changes. The Event Table entry is deleted, and the device is updated.
NOTE: A single Event entry can be removed from the RMON Events page using the Remove
check box.
Defining and Displaying RMON Events Control Using the CLI Commands
The following table summarizes the equivalent CLI commands for configuring and displaying fields in the RMON Events Control page.
CLI Command
Description
rmon eventindex type [communitytext] [descriptiontext] [owner name]
Configures a RMON event.
show rmon events
Displays the RMON event table.
The following is an example of the CLI commands:
Console (config)# rmon event 10 log
Config (config)# exit
Console# show rmon events
Index Description Type Community Owner Last time sent
2 High Broadcast Log-Trap device Manager Jan 18 2002 23:59:48
Viewing the Events Log
The RMON Events Log page contains a list the RMON Events. To open the RMON Events Log:
Click Statistics/RMON > RMON> Events in the Tree View. The RMON Events Log page opens.
RMON Events Log Page
The RMON Events Log page contains the following fields:
Event—Identifies the RMON Event Log entry number.
Log No.— Indicates the log number.
Log Time—Specifies the time at which the log entry was entered.
Description—Describes the log entry.
Viewing RMON Events Log Using the CLI Commands
The following table summarizes the equivalent CLI commands for viewing fields displayed in the RMON Events Log page.
CLI Command
Description
rmon table-size logentries
Configures maximum number of log table entries.
show rmon log [event]
Displays the RMON logging table.
The following is an example of the CLI commands:
Console (config)# rmon table-size log 500
Console# show rmon log
Maximum table size: 500
Event Description Time
----- ----------- --------------------
1 Errors Jan 18 2002 23:48:19
1 Errors Jan 18 2002 23:58:17
2 High Broadcast Jan 18 2002 23:59:48
Console# show rmon log
Maximum table size: 500 (800 after reset)
Event Description Time
----- ----------- --------------------
1 Errors Jan 18 2002 23:48:19
1 Errors Jan 18 2002 23:58:17
2 High Broadcast Jan 18 2002 23:59:48
Defining Device Alarms
The RMON Alarm page allows network administrators to set network alarms. Network alarms occur when a network problem is detected. Rising and falling thresholds generate alarms. To open the RMON Alarm page:
Click Statistics/RMON > RMON> Alarms in the Tree View. The RMON Alarm page opens.
RMON Alarm Page
The RMON Alarm page contains the following fields:
Alarm Entry—Indicates a specific alarm.
Counter Name—Indicates the selected RMON counter.
Counter Value—Indicates the value of the RMON counter.
Sample Type—Specifies the sampling method for the selected variable and compares the value against the thresholds. The possible field values are:
Delta—Subtracts the last sampled value from the current value. The difference in the values is compared to the threshold.
Absolute—Compares the values directly with the thresholds at the end of the sampling interval.
Rising Threshold—The rising counter value that triggers the rising threshold alarm.
Rising/Falling Event—The mechanism that reports the alarms: LOGed or TRAPed or a combination of both. When LOG is selected, there is no saving mechanism either in the device or in the management system. However, if the device is not being reset, it remains in the device LOG table. If TRAP is selected, a TRAP via SNMP is generated and reported via the TRAP's general mechanism. The TRAP can be saved using the same mechanism.
Falling Threshold—The falling counter value that triggers the falling threshold alarm.
NOTE: The Rising and Falling thresholds are graphically presented on top of the graph bars.
Each monitored variable has a designated color.
Startup Alarm—The trigger that activates the alarm. Rising is defined by crossing the threshold from a low value threshold to a higher value threshold. The possible field values are:
Rising Alarm
Falling Alarm
Rising and Falling Alarm
Interval—Indicates the alarm interval time.
Owner—Indicates the device or user that defined the alarm.
Remove—Removes an RMON Alarm.
Check—Removes an Alarm Table entry.
Unchecked—Maintains an Alarm Table entry.
Adding an Alarm Table entry:
Open the RMON Alarm page.
Click Add. The New Alarm Entry page opens.
New Alarm Entry
Define the New Alarm Index, Sample Variable, Sample Type, Rising Threshold,
Rising Event, Falling Threshold, Falling Event, Startup Alarm, Interval, and Owner
fields.
Click Apply Changes. The RMON alarm is added, and the device is updated.
Modifying an Alarm Table entry:
Open the RMON Alarm page.
Select an RMON Alarm Table entry in the Alarm Entry drop-down box.
