To configure alarm conditions, use the rmon alarm Global Configuration modecommand. To remove an alarm, use the no form of this command.

Syntax

rmon alarm index mib-object-id interval rising-threshold falling-threshold rising-event falling-event [type {absolute | delta}] [startup {rising | rising-falling | falling}] [owner name]

no rmon alarm index

Parameters

• index—Specifies the alarm index. (Range: 1–65535)

• mib-object-id—Specifies the object identifier of the variable to be sampled. (Valid OID)

• interval—Specifies the interval in seconds during which the data is sampled and compared with rising and falling thresholds. (Range: 1–2147483647)

• rising-threshold—Specifies the rising threshold value. (Range: 0–2147483647)

• falling-threshold—Specifies the falling threshold value. (Range: 0–2147483647)

• rising-event—Specifies the index of the event triggered when a rising threshold is crossed. (Range: 0–65535)

• falling-event—Specifies the index of the event triggered when a falling threshold is crossed. (Range: 0–65535)

• type {absolute | delta}—(Optional) Specifies the method used for sampling the selected variable and calculating the value to be compared against the thresholds. The possible values are:

  absolute—Specifies that the selected variable value is compared directly with the thresholds at the end of the sampling interval.

  delta—Specifies that the selected variable value of the last sample is subtracted from the current value, and the difference is compared with the thresholds.

• startup {rising | rising-falling | falling}—(Optional) Specifies the alarm that may be sent when this entry becomes valid. The possible values are:

  rising—Specifies that if the first sample (after this entry becomes valid) is greater than or equal to rising-threshold, a single rising alarm is generated.

  rising-falling—Specifies that if the first sample (after this entry becomes valid) is greater than or equal to rising-threshold, a single rising alarm is generated. If the first sample (after this entry becomes valid) is less than or equal to falling-threshold, a single falling alarm is generated.

  falling —Specifies that if the first sample (after this entry becomes valid) is less than or equal to falling-threshold, a single falling alarm is generated.

• owner name—(Optional) Specifies the name of the person who configured this alarm. (Valid string)

Default Configuration

The default method type is absolute.

The default startup direction is rising-falling.

If the owner name is not specified, it defaults to an empty string.

Command Mode

Global Configuration mode

Example

The following example configures an alarm with index 1000, MIB object ID D-Link, sampling interval 360000 seconds (100 hours), rising threshold value 1000000, falling threshold value 1000000, rising threshold event index 10, falling threshold event index 10, absolute method type and rising-falling alarm.

switchxxxxxx(config)#  rmon alarm 1000 1.3.6.1.2.1.2.2.1.10.1 360000 1000000 1000000 10 20

To display a summary of the alarms table, use the show rmon alarm-table Privileged EXEC mode command.

Syntax

show rmon alarm-table

Parameters

This command has no arguments or keywords.

Command Mode

Privileged EXEC mode

Example

The following example displays the alarms table.

The following table describes the significant fields shown in the display:

To display alarm configuration, use the show rmon alarm Privileged EXEC mode command.

Syntax

show rmon alarm number

Parameters

alarm number—Specifies the alarm index. (Range: 1–65535)

Command Mode

Privileged EXEC mode

Example

The following example displays RMON 1 alarms.

switchxxxxxx#  show rmon alarm 1
Alarm 1
-------
OID: 1.3.6.1.2.1.2.2.1.10.1
Last sample Value: 878128
Interval: 30
Sample Type: delta
Startup Alarm: rising
Rising Threshold: 8700000
Falling Threshold: 78
Rising Event: 1
Falling Event: 1
Owner: CLI

The following table describes the significant fields shown in the display:

To configure an event, use the rmon event Global Configuration modecommand. To remove an event, use the no form of this command.

Syntax

rmon event index {none | log | trap | log-trap} [community text] [description text] [owner name]

no rmon event index

Parameters

• index—Specifies the event index. (Range: 1–65535)

• none— Specifies that no notification is generated by the device for this event.

• log—Specifies that a notification entry is generated in the log table by the device for this event.

• trap—Specifies that an SNMP trap is sent to one or more management stations by the device for this event.

• log-trap—Specifies that an entry is generated in the log table and an SNMP trap is sent to one or more management stations by the device for this event.

• community text—(Optional) Specifies the SNMP community (password) used when an SNMP trap is sent. (Octet string; 
length: 0–127 characters). Note this must be a community used in the definition of an SNMP host using the “snmp-server host” command.

• description text—(Optional) Specifies a comment describing this event. (Length: 0–127 characters)

• owner name—(Optional) Specifies the name of the person who configured this event. (Valid string)

Default Configuration

If the owner name is not specified, it defaults to an empty string.

Command Mode

Global Configuration mode

Example

The following example configures an event identified as index 10, for which the device generates a notification in the log table.

switchxxxxxx(config)#  rmon event 10 log

To display the RMON event table, use the show rmon events Privileged EXEC mode command.

Syntax

show rmon events

Parameters

This command has no arguments or keywords.

Command Mode

Privileged EXEC mode

Example

The following example displays the RMON event table.

The following table describes significant fields shown in the display:

To display the RMON log table, use the show rmon log Privileged EXEC mode command.

Syntax

show rmon log [event]

Parameters

event—(Optional) Specifies the event index. (Range: 0–65535)

Command Mode

Privileged EXEC mode

Example

The following example displays event 1 in the RMON log table.

To configure the maximum size of RMON tables, use the rmon table-size Global Configuration modecommand. To return to the default size, use the no form of this command.

Syntax

rmon table-size {history entries | log entries}

no rmon table-size {history | log}

Parameters

• history entries—Specifies the maximum number of history table entries. (Range: 20–32767)

• log entries—Specifies the maximum number of log table entries. (Range: 20–32767)

Default Configuration

The default history table size is 270 entries.

The default log table size is 200 entries.

Command Mode

Global Configuration mode

User Guidelines

The configured table size takes effect after the device is rebooted.

Example

The following example configures the maximum size of RMON history tables to 100 entries.

switchxxxxxx(config)#  rmon table-size history 100

To display RMON Ethernet statistics, use the show rmon statistics Privileged EXEC mode command.

Syntax

show rmon statistics {interface-id}

Parameters

interface-id—Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or Port-channel.

Command Mode

Privileged EXEC mode

Example

The following example displays RMON Ethernet statistics for port gi1/0/1.

switchxxxxxx#  show rmon statistics gi1/0/1
Port gi1/0/1
Dropped: 0
Octets: 0                        Packets: 0
Broadcast: 0                     Multicast: 0
CRC Align Errors: 0              Collisions: 0
Undersize Pkts: 0                Oversize Pkts: 0
Fragments: 0                     Jabbers: 0
64 Octets: 0                     65 to 127 Octets: 1
128 to 255 Octets: 1             256 to 511 Octets: 1
512 to 1023 Octets: 0            1024 to max Octets: 0

The following table describes the significant fields displayed.

To enable RMON MIB collecting history statistics (in groups) on an interface, use the rmon collection stats Interface Configuration mode command. To remove a specified RMON history group of statistics, use the no form of this command.

Syntax

rmon collection stats index [owner ownername] [buckets bucket-number] [interval seconds]

no rmon collection stats index

Parameters

• index—The requested group of statistics index.(Range: 1–65535)

• owner ownername—(Optional) Records the name of the owner of the RMON group of statistics. If unspecified, the name is an empty string. (Range: Valid string)

• buckets bucket-number—(Optional) A value associated with the number of buckets specified for the RMON collection history group of statistics. If unspecified, defaults to 50.(Range: 1–50)

• interval seconds—(Optional) The number of seconds in each polling cycle. If unspecified, defaults to 1800 (Range: 1–3600).

Command Mode

Interface Configuration mode.

To display the requested RMON history group statistics, use the show rmon collection stats Privileged EXEC mode command.

Syntax

show rmon collection stats [interface-id]

Parameters

interface-id—(Optional) Specifies an interface ID. The interface ID can be one of the following types: Ethernet port or Port-channel.

Command Mode

Privileged EXEC mode

Example

The following example displays all RMON history group statistics.

The following table describes the significant fields shown in the display.

To display RMON Ethernet history statistics, use the show rmon history Privileged EXEC mode command.

Syntax

show rmon history index {throughput | errors | other} [period seconds]

Parameters

• index—Specifies the set of samples to display. (Range: 1–65535)

• throughput—Displays throughput counters.

• errors—Displays error counters.

• other—Displays drop and collision counters.

• period seconds—(Optional) Specifies the period of time in seconds to display. (Range: 1–2147483647)

Command Mode

Privileged EXEC mode

Example

The following examples display RMON Ethernet history statistics for index 1:

The following table describes significant fields shown in the display: