show rmon
Displays the Remote monitoring (RMON) agent status and information about RMON alarms,
events, history, logs, and statistics on the interface.
Syntax
show rmon
{
alarm
alarm-number
|
event
event-number
|
history
history-index
|
logs
event-index
|
statistics
[
number
|
interface-type
|
interface-number
]
}
Parameters
- alarm-number
- Specifies the alarm index identification number. Valid values range from 1 through 65535.
- event-number
- Specifies the event index identification number. Valid values range from 1 through 65535.
- event-index
- Specifies the event index identification number. Valid values range from 1 through 65535.
- statistics
- Specifies to display the RMON Ethernet statistics; and the statistics group that collects statistics on promiscuous traffic across an interface and total traffic into and out of the agent interface. Valid values range from 1 through 65535.
Modes
Privileged EXEC mode
Global configuration mode
The
show rmon command displays the following information:
| Output field | Description |
|---|---|
| Rising threshold | The sampling value limit, beyond which the rising alarm is triggered. |
| Falling threshold | The sampling value limit, beyond which the falling alarm is triggered. |
| Octets | The total number of octets of data received on the network. This number includes octets in bad packets. This number does not include framing bits but does include Frame Check Sequence (FCS) octets. |
| Drop events | Indicates an overrun at the port. The port logic could not receive the traffic at full line rate and had to drop some packets as a result. The counter indicates the total number of events in which packets were dropped by the RMON probe due to lack of resources. This number is not necessarily the number of packets dropped, but is the number of times an overrun condition has been detected. |
| Packets | The total number of packets received. This number includes bad packets, broadcast packets, and multicast packets. |
| Broadcast pkts | The total number of good packets received that were directed to the broadcast address. This number does not include multicast packets. |
| Multicast pkts | The total number of good packets received that were directed to a multicast address. This number does not include packets directed to the broadcast address. |
| CRC align errors | The total number of packets received that were from 64 - 1518 octets long, but had either a bad FCS with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error). The packet length does not include framing bits but does include FCS octets. |
| Undersize pkts | The total number of packets received that were less than 64 octets long and were otherwise well formed. This number does not include framing bits but does include FCS octets. |
| Fragments | The total number of packets received that were less than 64 octets long and had either a bad FCS with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error). It is normal for this counter to increment, since it counts both runts (which are normal occurrences due to collisions) and noise hits. This number does not include framing bits but does include FCS octets. |
| Oversize packets | The total number of packets received that were longer than 1518 octets and were otherwise
well formed. This number does not include framing bits but does include FCS octets.
Note: 48GC modules do not support count information on oversized packets and report 0.
|
| Jabbers | The total number of packets received that were longer than 1518 octets and had either
a bad FCS with an integral number of octets (FCS Error) or a bad FCS with a non-integral
number of octets (Alignment Error).
Note: This definition of jabber is different from the definition in IEEE-802.3 section 8.2.1.5
(10BASE5) and section 10.3.1.4 (10BASE2). These documents define jabber as the condition
where any packet exceeds 20 ms. The allowed range to detect jabber is between 20 ms
and 150 ms.
This number does not include framing bits but does include FCS octets.
Note: 48GC modules do not support count information on jabbers and report 0.
|
| Collisions | The best estimate of the total number of collisions on this Ethernet segment. |
| 64 octets pkts | The total number of packets received that were 64 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 65 to 127 octets pkts | The total number of packets received that were 65 - 127 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 128 to 255 octets pkts | The total number of packets received that were 128 - 255 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 256 to 511 octets pkts | The total number of packets received that were 256 - 511 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 512 to 1023 octets pkts | The total number of packets received that were 512 - 1023 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 1024 to 1518 octets pkts | The total number of packets received that were 1024 - 1518 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| Event Index | The event index identification number. |
| Log Index | The log index identification number. |
| Log Generated time | The time at which the log is generated. |
| Log Description | Indicates the type of alarm; whether it is a rising or falling alarm. |
Examples
The following example shows the output of the
show rmon
alarm
command.
device(config)# show rmon alarm Alarm 1 is active, owned by monitor Monitors etherStatsPkts.13 every 5 seconds Taking absolute samples, last value was 675 Rising threshold is 100, assigned to event 1 Falling threshold is 0, assigned to event 1 On startup enable rising or falling alarm Alarm 2 is active, owned by monitor Monitors etherStatsPkts.2 every 5 seconds Taking absolute samples, last value was 414 Rising threshold is 100, assigned to event 3 Falling threshold is 0, assigned to event 3 On startup enable rising or falling alarm
The following example shows the output of the
show rmon
event
command.
device(config)# show rmon event Event 1 is active, owned by monitor Description is testing Event firing causes log, community Batch ID 0, argument <none> Last fired at system up time 3 minutes 52 seconds Event 2 is active, owned by monitor Description is logging Event firing causes log and trap, community public Batch ID 0, argument <none> Last fired at system up time 8 minutes 12 seconds
The following example shows the output of the
show rmon
history
history-index
command.
device(config)# show rmon history 1 History 1 is active, owned by monitor Monitors interface mgmt1 (ifIndex 25) every 30 seconds 25 buckets were granted to store statistics
The following example shows the output of the
show rmon
logs
command.
device(config)# show rmon logs Event Index = 1 Log Index = 1 Log Generated time = 00:03:52 (23200) Log Description = rising alarm Event Index = 2 Log Index = 1 Log Generated time = 00:08:12 (49200) Log Description = rising alarm Event Index = 3 Log Index = 1 Log Generated time = 00:05:12 (31200) Log Description = rising alarm Event Index = 4 Log Index = 1 Log Generated time = 00:01:32 (9200) Log Description = falling alarm Log Index = 2 Log Generated time = 00:02:52 (17200) Log Description = rising alarm
The following example shows the output of the
show rmon
logs
event-index
command.
device(config)# show rmon logs 2 Event Index = 2 Log Index = 1 Log Generated time = 00:08:12 (49200) Log Description = rising alarm
The following example shows the output of the
show rmon
statistics
number
command.
device(config)# show rmon statistics 1
Ethernet statistics 1 is active, owned by monitor
Interface 1/1/1 (ifIndex 1) counters
Octets 0
Drop events 0 Packets 0
Broadcast pkts 0 Multicast pkts 0
CRC align errors 0 Undersize pkts 0
Oversize pkts 0 Fragments 0
Jabbers 0 Collisions 0
Packet size counters
64 0 65 to 127 0
128 to 255 0 256 to 511 0
512 to 1023 0 1024 to 1518 0
The following example shows the statistics of the ethernet interface 1/2/1.
device(config)# show rmon statistics ethernet 1/2/1
Ethernet statistics 65 is active, owned by monitor
Interface 1/2/1 (ifIndex 65) counters
Octets 30170677670
Drop events 0 Packets 72281139
Broadcast pkts 0 Multicast pkts 66309417
CRC align errors 0 Undersize pkts 0
Oversize pkts 0 Fragments 0
Jabbers 0 Collisions 0
Packet size counters
64 0 65 to 127 10703415
128 to 255 19353559 256 to 511 18658554
512 to 1023 17980963 1024 to 1518 5584648
History