Help Center User GuideGetting Started
 
X
User Guide
Getting Started
Contents  

RPM

Troubleshooting RPM Setup

Problem

Description: You can configure RPM parameters to monitor real-time performance through the J-Web interface.

Solution

To configure RPM parameters:

Procedure

  1. Select Troubleshoot>RPM>Setup RPM in the J-Web user interface if you are using SRX5400, SRX5600, or SRX5800 platform.

    Or

    Select Administration>RPM>Setup RPM in the J-Web user interface.

  2. Enter the information specified in Table 303 to troubleshoot the issue.
  3. From the main RPM configuration page, click one:
    • Apply—Applies the configuration and stays on the RPM configuration page.

    • OK—Applies the configuration and returns to the RPM configuration page.

    • Cancel—Cancels your entries and returns to the RPM configuration page.

Table 303: RPM Setup Troubleshooting Options

Field FunctionAction
Probe Owners
Identification

Owner Name

Specifies an RPM owner for which one or more RPM tests are configured. In most implementations, the owner name identifies a network on which a set of tests is being run (a particular customer, for example).

Type the name of the RPM owner.

Performance Probe Tests
Identification

Test name

Specifies a unique name to identify the RPM test.

Type the name of the RPM test.

Target (Address or URL)

Specifies an IP address or a URL of a probe target.

Type the IP address, in dotted decimal notation, or the URL of the probe target. If the target is a URL, type a fully formed URL that includes http://.

Source Address

Specifies an IP address to be used as the probe source address.

Type the source address to be used for the probe. If the source IP address is not one of the device's assigned addresses, the packet uses the outgoing interface's address as its source.

Routing Instance

Specifies a routing instance over which the probe is sent.

Type the routing instance name. The routing instance applies only to probes of type icmp and icmp-timestamp. The default routing instance is inet.0.

History Size

Specifies the number of probe results saved in the probe history.

Type a number between 0 and 255. The default history size is 50 probes.

Request Information

Probe Type

Specifies the type of probe to send as part of the test.

Select the desired probe type from the list:

  • http-get

  • http-get-metadata

  • icmp-ping

  • icmp-ping-timestamp

  • tcp-ping

  • udp-ping

Interval

Specifies the wait time (in seconds) between each probe transmission.

Type a number between 1 and 255 (seconds).

Test Interval

Specifies the wait time (in seconds) between tests.

Type a number between 0 and 86400 (seconds).

Probe Count

Specifies the total number of probes to be sent for each test.

Type a number between 1 and 15.

Moving Average Size

Specifies the number of samples used for a moving average.

Type a number between 0 and 225.

Destination Port

Specifies the TCP or UDP port to which probes are sent.

To use TCP or UDP probes, you must configure the remote server as a probe receiver. Both the probe server and the remote server must be Juniper Networks devices configured to receive and transmit RPM probes on the same TCP or UDP port.

Type the number 7—a standard TCP or UDP port number—or a port number from 49152 through 65535.

DSCP Bits

Specifies the Differentiated Services code point (DSCP) bits. This value must be a valid 6-bit pattern. The default is 000000.

Type a valid 6-bit pattern.

Data Size

Specifies the size of the data portion of the ICMP probes.

Type a size (in bytes) between 0 and 65507.

Data Fill

Specifies the contents of the data portion of the ICMP probes.

Type a hexadecimal value between 1 and 800h to use as the contents of the ICMP probe data.

Hardware Timestamp

One Way Hardware Timestamp

Specifies the hardware timestamps for one-way measurements.

To enable one-way timestamping, select the check box.

Hardware Timestamp

Specifies timestamping of RPM probe messages. You can timestamp the following RPM probes to improve the measurement of latency or jitter:

  • ICMP ping

  • ICMP ping timestamp

  • UDP ping—destination port UDP-ECHO (port 7) only

  • UDP ping timestamp—destination port UDP-ECHO (port 7) only

To enable timestamping, select the check box.

Destination Interface

Specifies the name of an output interface for probes.

Select the interface from the drop-down list.

Maximum Probe Thresholds

Successive Lost Probes

Specifies the total number of probes that must be lost successively to trigger a probe failure and generate a system log message.

Type a number between 0 and 15.

Lost Probes

Specifies the total number of probes that must be lost to trigger a probe failure and generate a system log message.

Type a number between 0 and 15.

Round Trip Time

Specifies the total round-trip time (in microseconds), from the device to the remote server, that triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Jitter

Specifies the total jitter (in microseconds) for a test that triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Standard Deviation

Specifies the maximum allowable standard deviation (in microseconds) for a test, which, if exceeded, triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Egress Time

Specifies the total one-way time (in microseconds), from the device to the remote server, that triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Ingress Time

Specifies the total one-way time (in microseconds), from the remote server to the device, that triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds)

Jitter Egress Time

Specifies the total outbound-time jitter (in microseconds) for a test that triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds)

Jitter Ingress Time

Specifies the total inbound-time jitter (in microseconds) for a test that triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Egress Standard Deviation

Specifies the maximum allowable standard deviation of outbound times (in microseconds) for a test, which, if exceeded, triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Ingress Standard Deviation

Specifies the maximum allowable standard deviation of inbound times (in microseconds) for a test, which, if exceeded, triggers a probe failure and generates a system log message.

Type a number between 0 and 60,000,000 (microseconds).

Traps

Egress Jitter Exceeded

Generates SNMP traps when the threshold for jitter in outbound time is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Egress Standard Deviation Exceeded

Generates SNMP traps when the threshold for standard deviation in outbound times is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Egress Time Exceeded

Generates SNMP traps when the threshold for maximum outbound time is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Ingress Jitter Exceeded

Generates SNMP traps when the threshold for jitter in inbound time is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Ingress Standard Deviation Exceeded

Generates SNMP traps when the threshold for standard deviation in inbound times is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Ingress Time Exceeded

Generates traps when the threshold for maximum inbound time is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Jitter Exceeded

Generates traps when the threshold for jitter in round-trip time is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Probe Failure

Generates traps when the threshold for the number of successive lost probes is reached.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

RTT Exceeded

Generates traps when the threshold for maximum round-trip time is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Standard Deviation Exceeded

Generates traps when the threshold for standard deviation in round-trip times is exceeded.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Test Completion

Generates traps when a test is completed.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Test Failure

Generates traps when the threshold for the total number of lost probes is reached.

  • To enable SNMP traps for this condition, select the check box.

  • To disable SNMP traps, clear the check box.

Maximum Number of Concurrent Probes

Maximum Number of Concurrent Probes

Specifies the maximum number of concurrent probes allowed.

Type a number between 1 and 500.

Probe Server

TCP Probe Server

Specifies the port on which the device is to receive and transmit TCP probes.

Type number 7, or a port number from 49160 through 65535.

UDP Probe Server

Specifies the port on which the device is to receive and transmit UDP probes.

Type number 7, or a port number from 49160 through 65535.

See Also

Troubleshooting RPM Information

Problem

Description: You can view the RPM configuration to verify the following information:

  • The RPM configuration is within the expected values.

  • The RPM probes are functioning and the RPM statistics are within expected values.

  • The device is configured to receive and transmit TCP and UDP RPM probes on the correct ports.

In addition to the RPM statistics for each RPM test, the J-Web interface displays the round-trip times and cumulative jitter graphically. In the graphs, the round-trip time and jitter values are plotted as a function of the system time. Large spikes in round-trip time or jitter indicate a slower outbound (egress) or inbound (ingress) time for the probe sent at that particular time.

Solution

To view RPM information:

  1. Select Troubleshoot>RPM>View RPM in the J-Web user interface if you are using SRX5400, SRX5600, or SRX5800 platform.

    Or

    Select Administration>RPM>View RPM in the J-Web user interface.

  2. Enter the information specified in Table 304 to troubleshoot the issue.

Table 304: RPM Information Troubleshooting Options

Field FunctionAdditional Information
Currently Running Tests

Graph

Click the Graph link to display the graph (if it is not already displayed) or to update the graph for a particular test.

Owner

Configured owner name of the RPM test.

Test Name

Configured name of the RPM test.

Probe Type

Type of RPM probe configured for the specified test. Following are valid probe types:

  • http-get

  • http-get-metadata

  • icmp-ping

  • icmp-ping-timestamp

  • tcp-ping

  • udp-ping

Target Address

IP address or URL of the remote server that is being probed by the RPM test.

Source Address

Explicitly configured source address that is included in the probe packet headers.

If no source address is configured, the RPM probe packets use the outgoing interface as the source address, and the Source Address field is empty.

Minimum RTT

Shortest round-trip time from the J Series device to the remote server, as measured over the course of the test.

Maximum RTT

Longest round-trip time from the J Series device to the remote server, as measured over the course of the test.

Average RTT

Average round-trip time from the J Series device to the remote server, as measured over the course of the test.

Standard Deviation RTT

Standard deviation of round-trip times from the J Series device to the remote server, as measured over the course of the test.

Probes Sent

Total number of probes sent over the course of the test.

Loss Percentage

Percentage of probes sent for which a response was not received.

Round-Trip Time for a Probe

Samples

Total number of probes used for the data set.

The J Series device maintains records of the most recent 50 probes for each configured test. These 50 probes are used to generate RPM statistics for a particular test.

Earliest Sample

System time when the first probe in the sample was received.

Latest Sample

System time when the last probe in the sample was received.

Mean Value

Average round-trip time for the 50-probe sample.

Standard Deviation

Standard deviation of the round-trip times for the 50-probe sample.

Lowest Value

Shortest round-trip time from the device to the remote server, as measured over the 50-probe sample.

Time of Lowest Sample

System time when the lowest value in the 50-probe sample was received.

Highest Value

Longest round-trip time from the J Series device to the remote server, as measured over the 50-probe sample.

Time of Highest Sample

System time when the highest value in the 50-probe sample was received.

Cumulative Jitter for a Probe

Samples

Total number of probes used for the data set.

The J Series device maintains records of the most recent 50 probes for each configured test. These 50 probes are used to generate RPM statistics for a particular test.

Earliest Sample

System time when the first probe in the sample was received.

Latest Sample

System time when the last probe in the sample was received.

Mean Value

Average jitter for the 50-probe sample.

Standard Deviation

Standard deviation of the jitter values for the 50-probe sample.

Lowest Value

Smallest jitter value, as measured over the 50-probe sample.

Time of Lowest Sample

System time when the lowest value in the 50-probe sample was received.

Highest Value

Highest jitter value, as measured over the 50-probe sample.

Time of Highest Sample

System time when the highest jitter value in the 50-probe sample was received.

See Also

Help us to improve. Rate this article.
Feedback Received. Thank You!

Ask questions in TechWiki

Check documentation in TechLibrary

Rating by you:      
X

Additional Comments

800 characters remaining

May we contact you if necessary?

Name:
Email:

Need product assistance? Contact Juniper Support

Submit