RMON Configuration Guide, Cisco IOS Release 12.4T Americas Headquarters

RMON Configuration Guide, Cisco IOS Release 12.4T Americas Headquarters
RMON Configuration Guide, Cisco IOS
Release 12.4T
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 527-0883
CONTENTS
Configuring RMON Support 1
Finding Feature Information 1
Prerequisites for Configuring RMON Support 1
Restrictions for Configuring RMON Support 1
Information About Configuring RMON Support 2
RMON Overview 2
RMON Groups 2
RMON Event and Alarm Notifications 4
RMON MIB 4
HC Alarm MIB 5
How to Configure RMON Support 5
Configuring RMON 6
Configuring RMON Event and Alarm Notifications 7
Configuring RMON Groups 9
Configuration Examples for RMON Support 12
Configuring RMON Example 12
Configuring RMON Event and Alarm Notifications Example 12
Configuring RMON Tables Example 14
Additional References 14
Feature Information for Configuring RMON Support 15
RMON Configuration Guide, Cisco IOS Release 12.4T
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Contents
RMON Configuration Guide, Cisco IOS Release 12.4T
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Configuring RMON Support
This module describes the Remote Monitoring (RMON) MIB agent specification and its usage in
conjunction with Simple Network Management Protocol (SNMP) to monitor traffic using alarms and
events.
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Finding Feature Information, page 1
Prerequisites for Configuring RMON Support, page 1
Restrictions for Configuring RMON Support, page 1
Information About Configuring RMON Support, page 2
How to Configure RMON Support, page 5
Configuration Examples for RMON Support, page 12
Additional References, page 14
Feature Information for Configuring RMON Support, page 15
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature
information and caveats, see the release notes for your platform and software release. To find information
about the features documented in this module, and to see a list of the releases in which each feature is
supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for Configuring RMON Support
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RMON requires SNMP to be configured (you must be running a version of SNMP on the server that
contains the RMON MIB).
RMON can be very data and processor intensive. You must measure usage effects to ensure that router
performance is not degraded by RMON and to minimize excessive management traffic overhead.
Native mode in RMON is less intensive than promiscuous mode.
Restrictions for Configuring RMON Support
•
Full RMON packet analysis (as described in RFC 1757) is supported only on an Ethernet interface of
Cisco 2500 series routers and Cisco AS5200 series universal access servers.
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RMON Overview
Information About Configuring RMON Support
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A generic RMON console application is recommended in order to take advantage of the RMON
network management capabilities.
Even though the Switched Port Analyzer (SPAN) is specified as the source interface, broadcast and
multicast traffic that flow through other interface ports are also captured by the SPAN destination
interface.
Traffic between different VLANs can be captured by the SPAN destination interface.
Information About Configuring RMON Support
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RMON Overview, page 2
RMON Groups, page 2
RMON Event and Alarm Notifications, page 4
RMON MIB, page 4
HC Alarm MIB, page 5
RMON Overview
RMON is a standard monitoring specification that enables various network monitors and console systems
to exchange network-monitoring data. RMON provides network administrators with more flexibility in
selecting network-monitoring probes and consoles with features that meet their particular networking
needs.
The RMON specification defines a set of statistics and functions that can be exchanged between RMONcompliant console managers and network probes. RMON provides network administrators with
comprehensive network-fault diagnosis, planning, and performance-tuning information.
The RMON feature identifies activity on individual nodes and allows you to monitor all nodes and their
interaction on a LAN segment. Used in conjunction with the SNMP agent in a router, RMON allows you to
view both traffic that flows through the router and segment traffic that is not necessarily destined for the
router. Combining RMON alarms and events (classes of messages that indicate traffic violations and
various unusual occurrences over a network) with existing MIBs allows you to choose where proactive
monitoring will occur.
RMON Groups
RMON delivers information in RMON groups of monitoring elements, each providing specific sets of data
to meet common network-monitoring requirements. Each group is optional so that you do not need to
support all the groups within the Management Information Base (MIB). Some RMON groups require
support of other RMON groups to function properly.
The table below summarizes the nine monitoring groups specified in the RFC 1757 Ethernet RMON MIB.
For more information on gathering RMON statistics for these data types, refer to Configuring RMON
Groups, page 9.
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Configuring RMON Support
Information About Configuring RMON Support
Note
All Cisco IOS software images ordered without the explicit RMON option include limited RMON support
(RMON alarms and event groups only). Images ordered with the RMON option include support for all nine
management groups (statistics, history, alarms, hosts, hostTopN, matrix, filter, capture, and event). As a
security precaution, support for the capture group allows capture of packet header information only; data
payloads are not captured.
Table 1
RMON Monitoring Groups
RMON Group
Function
Elements
Statistics
Contains statistics measured by
the probe for each monitored
interface on this device.
Packets dropped, packets sent,
bytes sent (octets), broadcast
packets, multicast packets, CRC
errors, runts, giants, fragments,
jabbers, collisions, and counters
for packets ranging from 64 to
128, 128 to 256, 256 to 512, 512
to 1024, and 1024 to 1518 bytes.
History
Records periodic statistical
samples from a network and
stores them for later retrieval.
Sample period, number of
samples, items sampled.
Alarm
Periodically takes statistical
samples from variables in the
probe and compares them with
previously configured thresholds.
If the monitored variable crosses
a threshold, an event is generated.
Includes the alarm table and
requires the implementation of
the event group. Alarm type,
interval, starting threshold, stop
threshold.
Host
Contains statistics associated with Host address, packets, and bytes
each host discovered on the
received and transmitted, as well
network.
as broadcast, multicast, and error
packets.
HostTopN
Prepares tables that describe the
Statistics, host(s), sample start
hosts that top a list ordered by
and stop periods, rate base,
one of their base statistics over an duration.
interval specified by the
management station. Thus, these
statistics are rate-based.
Matrix
Stores statistics for conversations Source and destination address
between sets of two addresses. As pairs and packets, bytes, and
the device detects a new
errors for each pair.
conversation, it creates a new
entry in its table.
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RMON Event and Alarm Notifications
Information About Configuring RMON Support
RMON Group
Function
Elements
Filters
Enables packets to be matched by
a filter equation. These matched
packets form a data stream that
might be captured or that might
generate events.
Bit-filter type (mask or not
mask), filter expression (bit
level), conditional expression
(and, or not) to other filters.
Packet Capture
Enables packets to be captured
Size of buffer for captured
after they flow through a channel. packets, full status (alarm),
number of captured packets.
Events
Controls the generation and
notification of events from this
device.
Event type, description, last time
event sent.
RMON Event and Alarm Notifications
Thresholds allow you to minimize the number of notifications sent on the network. The RMON MIB
defines two traps, the risingAlarm trap which is the rising-threshold value and fallingAlarm trap which is
the falling-threshold value. Alarms are triggered when a problem exceeds a set rising-threshold value. No
alarm notifications are sent until the agent recovers, as defined by the falling-threshold value. This means
that notifications are not sent each time a minor failure or recovery occurs.
You can set an RMON alarm on any MIB object in the access server. You cannot disable all the alarms you
configure at once. The delta value tests the change between MIB variables, which affects the
alarmSampleType in the alarmTable of the RMON MIB. The absolute value tests each MIB variable
directly, which affects the alarmSampleType in the alarmTable of the RMON MIB.
Refer to RFC 1757 to learn more about alarms and events and how they interact with each other.
RMON MIB
RMON MIB supports for polling of 64 bit counters and includes the following features:
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•
usrHistory group. This MIB group is similar to the RMON etherHistory group except that the group
enables you to specify the MIB objects that are collected at each interval.
partial probeConfig group. This MIB group is a subset of the probeConfig group implemented in readonly mode. These objects implement the simple scalars from this group. The table below details new
partial probeConfig group objects.
Table 2
partial probeConfig Group Objects
Object
Description
probeCapabilities
The RMON software groups implemented.
probeSoftwareRev
The current version of Cisco IOS software running
on the device.
probeHardwareRev
The current version of the Cisco device.
probeDateTime
The current date and time.
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HC Alarm MIB
How to Configure RMON Support
Object
Description
probeResetControl
Initiates a reset.
probeDownloadFile
The source of the image running on the device.
probeDownloadTFTPServer
The address of the server that contains the Trivial
File Transfer Protocol (TFTP) file that is used by
the device to download new versions of Cisco IOS
software.
probeDownloadAction
Specifies the action of the commands that cause the
device to reboot.
probeDownloadStatus
The state of a reboot.
netDefaultGateway
The router mapped to the device as the default
gateway.
hcRMONCapabilities
Specifies the features mapped to this version of
RMON.
In Cisco IOS Release 12.1, the RMON agent was rewritten to improve performance and add some new
features. The table below highlights some of the improvements implemented.
Table 3
RMON MIB Updates
Prior to the RMON MIB Update in Cisco IOS
Release 12.1
New Functionality in Cisco IOS Release 12.1
RMON configurations do not persist across reboots. RMON configurations persist across reboots.
Information is lost after a new session on the
Information is preserved after a new session on the
RMON server.
RMON server.
Packet analysis applies only on the MAC header of
the packet.
Complete packet capture is performed with analysis
applied to all frames in packet.
Only RMON I MIB objects are used for network
monitoring.
RMON I and selected RMON II objects are used
for network monitoring.
HC Alarm MIB
The high-capacity (HC) Alarm MIB, which is an extension of RMON Alarm group table objects, supports
polling of RMON variables up to 64 bit values. The HC-ALARM-MIB defines two traps, the
hcRisingAlarm which provides the rising-threshold value and hcFallingAlarm which provides the fallingthreshold value.
Refer to RFC 3434 to learn more about HC alarms.
How to Configure RMON Support
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Configuring RMON, page 6
RMON Configuration Guide, Cisco IOS Release 12.4T
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Configuring RMON
How to Configure RMON Support
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Configuring RMON Event and Alarm Notifications, page 7
Configuring RMON Groups, page 9
Configuring RMON
This task explains how to configure RMON and RMON queue size. In native mode, RMON monitors only
those packets that are received by the interface. In promiscuous mode, RMON monitors all packets on the
LAN segment.
SUMMARY STEPS
1. enable
2. configure terminal
3. interface type number
4. rmon {native | promiscuous}
5. exit
6. rmon queuesize size
7. exit
8. show rmon
DETAILED STEPS
Command or Action
Step 1 enable
Purpose
Enables privileged EXEC mode.
•
Enter your password if prompted.
Example:
Router> enable
Step 2 configure terminal
Enters global configuration mode.
Example:
Router# configure terminal
Step 3 interface type number
Specifies an interface type and number, and places the router in
interface configuration mode.
Example:
Router(config)# interface FastEthernet 1/0
Step 4 rmon {native | promiscuous}
Example:
Router(config-if)# rmon native
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Configures RMON on Ethernet interfaces in native or promiscuous
mode.
•
In the example, RMON is configured in the native mode.
Configuring RMON Event and Alarm Notifications
How to Configure RMON Support
Command or Action
Step 5 exit
Purpose
Exits the interface configuration mode and places the router in global
configuration mode.
Example:
Router(config-if)# exit
Step 6 rmon queuesize size
(Optional) Configures the size of the queue that holds packets for
analysis by the RMON process.
Example:
Router(config)# rmon queuesize 128
Step 7 exit
Exits global configuration mode and enters privileged EXEC mode.
Example:
Router(config)# exit
Step 8 show rmon
Displays general RMON statistics.
Example:
Router# show rmon
Configuring RMON Event and Alarm Notifications
The following tasks describe how to configure RMON event and alarm notifications.
SUMMARY STEPS
1. enable
2. configure terminal
3. rmon event number [log] [trap community] [description string] [owner string]
4. rmon alarm number variable interval {delta | absolute} rising-threshold value [event-number]
falling-threshold value [event-number] [owner string]
5. rmon hc-alarms number variable interval {delta | absolute} rising-threshold value [event-number]
falling-threshold value [event-number] [owner string]
6. exit
7. show rmon alarms
8. show rmon hc-alarms
9. show rmon events
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Configuring RMON Support
How to Configure RMON Support
DETAILED STEPS
Command or Action
Step 1 enable
Purpose
Enables privileged EXEC mode.
•
Enter your password if prompted.
Example:
Router> enable
Step 2 configure terminal
Enters global configuration mode.
Example:
Router# configure terminal
Step 3 rmon event number [log] [trap community] [description string] [owner
string]
Adds or removes an event (in the RMON
event table) that is associated with an
RMON event number.
Example:
Router(config)# rmon event number
Step 4 rmon alarm number variable interval {delta | absolute} rising-threshold Configures an alarm on any MIB object.
value [event-number] falling-threshold value [event-number] [owner
string]
Example:
Router(config)# rmon alarm 10 ifEntry.20.1 20 delta risingthreshold 15 1 falling-threshold 0 owner owner1
Step 5 rmon hc-alarms number variable interval {delta | absolute} risingthreshold value [event-number] falling-threshold value [event-number]
[owner string]
(Optional) Configures an HC alarm on any
MIB object.
Example:
Router(config)# rmon hc-alarms 2 ifInOctets.2 20 delta risingthreshold 2000 2 falling-threshold 1000 1 owner own
Step 6 exit
Exits the global configuration mode and
enters the privileged EXEC mode.
Example:
Router(config)# exit
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Configuring RMON Groups
How to Configure RMON Support
Command or Action
Step 7 show rmon alarms
Purpose
Displays the RMON alarm table.
Example:
Router# show rmon alarm
Step 8 show rmon hc-alarms
Displays the RMON HC alarm table.
Example:
Router# show rmon hc-alarms
Step 9 show rmon events
Displays the RMON event table.
Example:
Router# show rmon events
Configuring RMON Groups
The following tasks explain how to configure RMON groups by gathering RMON statistics for data types.
SUMMARY STEPS
1. enable
2. configure terminal
3. interface type number
4. rmon collection history controlEntry integer [owner ownername] [buckets bucket-number] [interval
seconds]
5. rmon collection host controlEntry integer [owner ownername]
6. rmon collection matrix controlEntry integer [owner ownername]
7. rmon collection rmon1 controlEntry integer [owner ownername]
8. exit
9. rmon capture-userdata
10. exit
11. show rmon history
12. show rmon hosts
13. show rmon matrix
14. show rmon statistics
15. show rmon capture
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Configuring RMON Support
How to Configure RMON Support
DETAILED STEPS
Command or Action
Step 1 enable
Purpose
Enables privileged EXEC mode.
•
Enter your password if prompted.
Example:
Router> enable
Step 2 configure terminal
Enters global configuration mode.
Example:
Router# configure terminal
Step 3 interface type number
Specifies an interface type and number, and places the
router in interface configuration mode.
Example:
Router(config)# interface FastEthernet 1/0
Step 4 rmon collection history controlEntry integer [owner
ownername] [buckets bucket-number] [interval seconds]
(Optional) Enables RMON history gathering on an
interface.
Example:
Router(config-if)# rmon collection history
controlEntry 20 owner john
Step 5 rmon collection host controlEntry integer [owner
ownername]
(Optional) Enables RMON MIB host collection group
of statistics on an interface.
Example:
Router(config-if)# rmon collection host controlEntry
40 owner own1
Step 6 rmon collection matrix controlEntry integer [owner
ownername]
Example:
Router(config-if)# rmon collection matrix
controlEntry 25 owner john
RMON Configuration Guide, Cisco IOS Release 12.4T
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(Optional) Enables RMON MIB matrix group of
statistics on an interface.
Configuring RMON Support
How to Configure RMON Support
Command or Action
Step 7 rmon collection rmon1 controlEntry integer [owner
ownername]
Purpose
(Optional) Enables all possible autoconfigurable
RMON MIB statistic collections on an interface.
Example:
Router(config-if)# rmon collection rmon1
controlEntry 30 owner john
Step 8 exit
Exits the interface configuration mode and places the
router in global configuration mode.
Example:
Router(config-if)# exit
Step 9 rmon capture-userdata
Disables the packet zeroing feature that initializes the
user payload portion of each RMON MIB packet.
Example:
Router(config)# rmon capture-userdata
Step 10 exit
Exits global configuration mode and enters privileged
EXEC mode.
Example:
Router(config)# exit
Step 11 show rmon history
Displays the RMON history table.
Example:
Router# show rmon history
Step 12 show rmon hosts
Displays the RMON hosts table.
Example:
Router# show rmon hosts
Step 13 show rmon matrix
Displays the RMON matrix table and values associated
with RMON variables.
Example:
Router# show rmon matrix
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Configuring RMON Example
Configuration Examples for RMON Support
Command or Action
Step 14 show rmon statistics
Purpose
Displays the RMON statistics table.
Example:
Router# show rmon statistics
Step 15 show rmon capture
Displays the contents of the router's RMON capture
table.
Example:
Router# show rmon capture
Configuration Examples for RMON Support
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Configuring RMON Example, page 12
Configuring RMON Event and Alarm Notifications Example, page 12
Configuring RMON Tables Example, page 14
Configuring RMON Example
The following example shows how to configure RMON with a queuesize of 100 packets in promiscuous
mode:
Router> enable
Router# configure terminal
Router(config)# interface fastethernet 0/0
Router(config-if)# rmon promiscuous
Router(config-if)# exit
Router(config)# rmon queuesize 100
The following is a sample output from the show rmon command. All counters are from the time the router
was initialized:
Router# show rmon
145678 packets input (34562 promiscuous), 0 drops
145678 packets processed, 0 on queue, queue utilization 15/100
Configuring RMON Event and Alarm Notifications Example
The following example shows how to enable the rmon eventglobal configurationcommand:
Router> enable
Router# configure terminal
Router(config)# rmon event 1 log trap eventtrap description “High ifOutErrors” owner
ownerA
This example creates RMON event number 1, which is defined as High ifOutErrors, and generates a log
entry when the event is triggered by an alarm. The user ownerA owns the row that is created in the event
table by this command. This example also generates an SNMP trap when the event is triggered.
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Configuring RMON Support
Configuration Examples for RMON Support
The following is a sample output from the show rmon events command:
Router# show rmon events
Event 1 is active, owned by ownerA
Description is High ifOutErrors
Event firing causes log and trap to community rmonTrap, last fired 00:00:00
The following example shows how to configure an RMON alarm using the rmon alarm global
configuration command:
Router> enable
Router# configure terminal
Router(config)# rmon alarm 10 ifEntry.20.1 20 delta rising-threshold 15 1 fallingthreshold 0 owner ownerA
This example configures RMON alarm number 10. The alarm monitors the MIB variable ifEntry.20.1 once
every 20 seconds until the alarm is disabled, and checks the change in the rise or fall of the variable. If the
ifEntry.20.1 value shows a MIB counter increase of 15 or more, such as from 100000 to 100015, the alarm
is triggered. The alarm in turn triggers event number 1, which is configured with the rmon event
command. Possible events include a log entry or an SNMP trap. If the ifEntry.20.1 value changes by 0, the
alarm is reset and can be triggered again.
The following is sample output from the show rmon alarms command
Router# show rmon alarms
Alarm 2 is active, owned by owner_a
Monitors ifEntry.20.1.20 every 20 seconds
Taking delta samples, last value was 0
Rising threshold is 15, assigned to event 12
Falling threshold is 0, assigned to event 0
On startup enable rising or falling alarm
The following example shows how to configure an RMON HC alarm using the rmon hc-alarms global
configuration command:
Router> enable
Router# configure terminal
Router(config)# rmon hc-alarms 2 ifInOctets.2 20 delta rising-threshold 2000 2 fallingthreshold 1000 1 owner own
This example configures RMON HC alarm number 2. The alarm monitors the MIB variable ifInOctets.2
once every 20 seconds until the alarm is disabled, and checks the change in the rise or fall of the variable. If
the ifInOctets.2value shows a MIB counter increase of 2000 or more, such as from 100000 to 103000, the
alarm is triggered. The alarm in turn triggers event number 2, which is configured with the rmon event
command. Possible events include a log entry or a Simple Network Management Protocol (SNMP) trap. If
theifInOctets.2 value changes by 1000 (falling threshold is 1000), the alarm is reset and can be triggered
again.
To display the contents of the RMON HC alarm table of the router, use the show rmon hc-alarms
command in privileged EXEC mode. The following is sample output:
Router# show rmon hc-alarms
Router#show rmon hc-alarms
Monitors ifInOctets.1 every 20 second(s)
Taking absolute samples, last value was 0
Rising threshold Low is 4096, Rising threshold Hi is 0,
assigned to event 0
Falling threshold Low is 1280, Falling threshold Hi is 0,
assigned to event 0
On startup enable rising or falling alarm
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Configuring RMON Tables Example
Additional References
Configuring RMON Tables Example
The following example shows how to enable the RMON collection matrix group of statistics with an ID
number of 25 and specifies john as the owner:
Router> enable
Router# configure terminal
Router(config)# interface fastethernet 0/0
Router(config-if)# rmon collection matrix controlEntry 25 owner john
To view values associated with RMON variables, enter the show rmon matrix privileged EXEC command
(Cisco 2500 series routers and Cisco AS5200 access servers only). The following is a sample output:
Router# show rmon matrix
Matrix 1 is active and owned by john
Monitors controlEntry
Table size is 25, last time an entry was deleted was at 11:18:09
Source addr is 0000.0c47.007b, dest addr is ffff.ffff.ffff
Transmitted 2 pkts, 128 octets, 0 errors
Source addr is 0000.92a8.319e, dest addr is 0060.5c86.5b82
Transmitted 2 pkts, 384 octets, 1 error
Additional References
Related Documents
Related Topic
Document Title
Cisco IOS commands
Cisco IOS Master Commands List, All Releases
CNS commands: complete command syntax,
command mode, command history, defaults, usage
guidelines, and examples
Cisco IOS Network Management Command
Reference 3.0
Standards
Standard
Title
No new or modified standards are supported by this -feature, and support for existing standards has not
been modified by this feature.
MIBs
MIB
•
•
MIBs Link
RMON MIB
HC-Alarm MIB
To locate and download MIBs for selected
platforms, Cisco IOS releases, and feature sets, use
Cisco MIB Locator found at the following URL:
http://www.cisco.com/go/mibs
RMON Configuration Guide, Cisco IOS Release 12.4T
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Configuring RMON Support
Feature Information for Configuring RMON Support
RFCs
RFC
Title
RFC 1757
Remote Network Monitoring Management
Information Base
RFC 2021
Remote Network Monitoring Management
Information Base Version 2 using SMIv2
RFC 3434
Remote Monitoring MIB Extensions for High
Capacity Alarms
Technical Assistance
Description
Link
The Cisco Support and Documentation website
provides online resources to download
documentation, software, and tools. Use these
resources to install and configure the software and
to troubleshoot and resolve technical issues with
Cisco products and technologies. Access to most
tools on the Cisco Support and Documentation
website requires a Cisco.com user ID and
password.
http://www.cisco.com/cisco/web/support/
index.html
Feature Information for Configuring RMON Support
The following table provides release information about the feature or features described in this module.
This table lists only the software release that introduced support for a given feature in a given software
release train. Unless noted otherwise, subsequent releases of that software release train also support that
feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
RMON Configuration Guide, Cisco IOS Release 12.4T
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Configuring RMON Support
Feature Information for Configuring RMON Support
Table 4
Feature Information for Configuring RMON Support
Feature Name
Releases
Feature Information
HC Alarm MIB
12.2(33)SXI 12.2(33)SRE
The HC Alarm MIB feature
provides an extension to the
RMON-1 Alarm group table
objects which was used to support
counter 32 objects for threshold
capabilities. The HC Alarm MIB
adds support to threshold
capabilities for counter 64
objects.
The following commands were
introduced: rmon hc-alarms,
show rmon hc-alarms.
Remote Monitoring MIB Update
12.0(5)T
The RMON Rewrite feature
updated the Remote Monitoring
MIB to improve performance and
available features.
The following commands were
introduced: rmon captureuserdata, rmon collection
history, rmon collection host,
rmon collection matrix, rmon
collection rmon1, show rmon
capture, show rmon filter, show
rmon hosts, show rmon matrix.
RMON Events and Alarms
11.2 Cisco IOS XE Release 2.1
The RMON Events and Alarms
feature introduces the ability to
combine RMON alarms and
events (classes of messages that
indicate traffic violations and
various unusual occurrences over
a network) with existing MIBs
allows you to choose where
proactive monitoring will occur.
In Cisco IOS XE Release 2.1, this
feature was introduced on Cisco
ASR 1000 series routers.
The following commands were
introduced: rmon alarm, rmon
event, rmon queuesize.
RMON Configuration Guide, Cisco IOS Release 12.4T
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Configuring RMON Support
Feature Name
Releases
Feature Information
RMON Full
11.2
The RMON Full feature identifies
activity on individual nodes and
helps monitor all nodes and their
interaction on a LAN segment.
Used in conjunction with the
SNMP agent in a router, RMON
can be used to view both traffic
that flows through the router and
segment traffic not necessarily
destined for the router.
RMON MIB enhancement to
support 64 bit counters
12.2(33)SXI 12.2(33)SRE
RMON MIB enhancement to
support 64 bit counters features
provides support for the ability to
poll 64 bit counters.
Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other
countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party
trademarks mentioned are the property of their respective owners. The use of the word partner does not
imply a partnership relationship between Cisco and any other company. (1005R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be
actual addresses and phone numbers. Any examples, command display output, network topology diagrams,
and other figures included in the document are shown for illustrative purposes only. Any use of actual IP
addresses or phone numbers in illustrative content is unintentional and coincidental.
RMON Configuration Guide, Cisco IOS Release 12.4T
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Configuring RMON Tables Example
RMON Configuration Guide, Cisco IOS Release 12.4T
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