- play_arrow Overview
- play_arrow Operation, Administration, and Management Features
- play_arrow Ethernet OAM and Connectivity Fault Management for Routers
- Introduction to OAM Connectivity Fault Management (CFM)
- Configure Connectivity Fault Management (CFM)
- CFM Action Profile
- Ethernet Local Management Interface
- CFM Support for CCC Encapsulated Packets
- Configure Unified ISSU for 802.1ag CFM
- CFM Monitoring between CE and PE Devices
- Configure Continuity Check Messages
- Example: Configure Ethernet CFM on Physical Interfaces
- Example: Configure Ethernet CFM on Bridge Connections
- Example: Configure Ethernet CFM over VPLS
- play_arrow Link Fault Management for Routers
- play_arrow Ethernet OAM Link Fault Management for Switches
- play_arrow Ethernet OAM Connectivity Fault Management for Switches
- play_arrow Ethernet Frame Delay
- Ethernet Frame Delay Measurements on Switches
- Configure MEP Interfaces on Switches to Support Ethernet Frame Delay Measurements (CLI Procedure)
- Configure One-Way Ethernet Frame Delay Measurements on Switches (CLI Procedure)
- Configure an Iterator Profile on a Switch (CLI Procedure)
- Trigger an Ethernet Frame Delay Measurement Session on a Switch
- Configure Two-Way Ethernet Frame Delay Measurements on Switches (CLI Procedure)
- play_arrow Ethernet Service OAM (ITU-TY.1731) for Routers
- ITU-T Y.1731 Ethernet Service OAM Overview
- Configure Ethernet Frame Delay Measurement Sessions
- Configuring MEP Interfaces to Support Ethernet Frame Delay Measurements
- Configure Ethernet Frame Loss Measurement
- Configure an Iterator Profile
- Configure Ethernet Synthetic Loss Measurements
- Ethernet Alarm Indication
- Inline Transmission Mode
-
- play_arrow Network Monitoring by using SNMP
- SNMP Architecture and SNMP MIBs Overview
- Understand SNMP Implementation in Junos OS
- Configure SNMP in Junos OS
- Configure Options on Managed Devices for Better SNMP Response Time
- Enterprise Specific Utility MIB to Enhance SNMP Coverage
- Optimize the Network Management System Configuration for the Best Results
- Interfaces to Accept SNMP Requests
- Configure SNMP for Routing Instances
- Configure SNMP Remote Operations
- SNMP Traps
- SNMP Traps Supported by Junos OS
- Trace SNMP Activity
- Access Privileges for an SNMP Group
- Configure Local Engine ID on SNMPv3
- Configure SNMPv3
- Configure SNMPv3 Authentication Type and Encryption Type
- SNMPv3 Traps
- SNMPv3 Informs
- SNMP Communities
- MIB Views
- SNMP MIBs Supported by Junos OS and Junos OS Evolved
- Junos OS SNMP FAQs
- play_arrow Accounting Options
- play_arrow Monitoring Options
- play_arrow Interface Alarms
- play_arrow IP Monitoring
- play_arrow sFlow Monitoring Technology
- play_arrow Adaptive Sampling for Routers and Switches
- play_arrow Packet Flow Accelerator Diagnostics Software
-
- play_arrow Monitoring Common Security Features
- play_arrow Performance Management
- play_arrow Port Mirroring
- play_arrow Port Mirroring and Analyzers
- Port Mirroring and Analyzers
- Configuring Port Mirroring and Analyzers
- Configuring Port Mirroring Instances
- Configuring Port Mirroring on Physical Interfaces
- Configuring Port Mirroring on Logical Interfaces
- Configuring Port Mirroring for Multiple Destinations
- Configuring Port Mirroring for Remote Destinations
- Configuring Port Mirroring Local and Remote Analysis
- 1:N Port Mirroring to Multiple Destinations on Switches
- Example: Configure Port Mirroring with Family any and a Firewall Filter
- Monitoring Port Mirroring
- Configure Packet Mirroring with Layer 2 Headers for Layer 3 Forwarded Traffic
- Troubleshooting Port Mirroring
-
- play_arrow System Log Messages
- play_arrow Network Management and Troubleshooting
- Compressing Troubleshooting Logs from /var/logs to Send to Juniper Networks Technical Support
- Monitoring and Troubleshooting
- Troubleshooting System Performance with Resource Monitoring Methodology
- Configuring Data Path Debugging and Trace Options
- Using MPLS to Diagnose LSPs, VPNs, and Layer 2 Circuits
- Using Packet Capture to Analyze Network Traffic
- On-Box Packet Sniffer Overview
- Troubleshooting Security Devices
- play_arrow Configuration Statements and Operational Commands
Configure RMON History Sampling
The Junos OS supports the history control group
(etherHistoryTable
) of the Remote
Network Monitoring (RMON) MIB (RFC 2819). The history
control tables record statistical samples from an Ethernet network
and store them for later retrieval.
To configure RMON history sampling and view or clear collected statistics using the Junos OS CLI, perform the following tasks:
Configure RMON History Sampling Collection
Use the history
statement at the [edit snmp rmon]
hierarchy level to configure RMON history sampling collection parameters.
The following parameters are required:
History index: The history entry is identified by an integer history index value (
historyControlIndex
MIB field) specified when you configure this statement, which is used to display or clear collected results later.Interface: The interface to monitor for the specified history index. Only one interface can be associated with a particular RMON history index.
In addition to the required parameters, you can specify a custom
sampling interval
(in seconds) and the sampling bucket-size
(number of discrete samples to be collected in a given interval).
[edit snmp] user@switch# set rmon history history-index interface interface-name user@switch# set rmon history history-index interval seconds user@switch# set rmon history history-index bucket-size number
An optional tag (owner
) associated with the history
index can also be assigned to the collection.
View and Clear RMON History Statistics
Use the show snmp rmon history
command to display collected RMON history table entries. You
can also use the show snmp mib walk
command to view RMON history table field samples.
The following sample RMON configuration sets up a history table sampling for interface xe-0/0/20.0 using a history index value of 1:
user@switch# show snmp | display set set snmp rmon history 1 interface xe-0/0/20.0 set snmp rmon history 1 bucket-size 1000 set snmp rmon history 1 interval 5 set snmp rmon history 1 owner test
Using the show snmp mib walk
command, you can see etherHistoryPkts
field statistics collected for history
index 1:
user@switch> show snmp mib walk etherHistoryPkts etherHistoryPkts.1.1 = 0 <...> etherHistoryPkts.1.148 = 10 etherHistoryPkts.1.149 = 14
To clear collected RMON history statistics, use the clear snmp history
command. After
clearing samples collected up to that point, collection continues
again at the configured interval, and new samples are recorded. This
command has options to clear collected samples of a particular configured
history index or to clear all samples from all configured indices.
For example, the following command clears collected RMON history samples for history control index 1 configured above:
user@switch> clear snmp history 1 Samples collected are cleared. user@switch> show snmp mib walk etherHistoryPkts | no-more user@switch> show snmp mib walk etherHistoryPkts | no-more etherHistoryPkts.1.1 = 0