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:
- 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.
- Enter the information specified in Table 282 to troubleshoot the issue.
- 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 282: RPM Setup Troubleshooting Options
| Field | Function | Action |
|---|---|---|
| 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:
|
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:
| 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. |
|
Egress Standard Deviation Exceeded | Generates SNMP traps when the threshold for standard deviation in outbound times is exceeded. |
|
Egress Time Exceeded | Generates SNMP traps when the threshold for maximum outbound time is exceeded. |
|
Ingress Jitter Exceeded | Generates SNMP traps when the threshold for jitter in inbound time is exceeded. |
|
Ingress Standard Deviation Exceeded | Generates SNMP traps when the threshold for standard deviation in inbound times is exceeded. |
|
Ingress Time Exceeded | Generates traps when the threshold for maximum inbound time is exceeded. |
|
Jitter Exceeded | Generates traps when the threshold for jitter in round-trip time is exceeded. |
|
Probe Failure | Generates traps when the threshold for the number of successive lost probes is reached. |
|
RTT Exceeded | Generates traps when the threshold for maximum round-trip time is exceeded. |
|
Standard Deviation Exceeded | Generates traps when the threshold for standard deviation in round-trip times is exceeded. |
|
Test Completion | Generates traps when a test is completed. |
|
Test Failure | Generates traps when the threshold for the total number of lost probes is reached. |
|
| 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. |
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:
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.
Enter the information specified in Table 283 to troubleshoot the issue.
Table 283: RPM Information Troubleshooting Options
| Field | Function | Additional 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:
| — |
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. | — |