monitoring-profile
Syntax
monitoring-profile profile-name {
export-filters filter-name {
peak-queue-length {
percent percent;
}
queue [queue(s)];
}
}Hierarchy Level
[edit class-of-service], [edit dynamic-profiles name class-of-service]
Description
Define a queue-length monitor to measure peak queue occupancy of a virtual output queue (VOQ).
In a typical deployment scenario that uses strict-priority scheduling, a
HIGH priority queue can starve LOW priority queues.
Thus the packets in such LOW priority queues can remain longer than
desired. Use this VOQ queue-length monitoring feature, along with queue transmit
statistics, to detect such stalled conditions.
Options
| monitoring-profile |
(Required) Name of the monitoring profile. Use the monitoring profile name to attach the monitoring profile to one or more interfaces. Each monitoring profile contains one or more export filters. |
| export-filters |
(Required) Name of the export filter. Each export filter consists of an optional peak queue length percentage filter and one or more queues. |
| peak-queue-length percent |
(Optional) The percentage of the peak queue length filter. When configured, Junos exports VOQ telemetry only when the hardware-captured peak queue length exceeds the configured value. When not configured, Junos always exports VOQ telemetry.
|
| queue |
(Required) The queue, or queues, for the export filter to monitor.
|
Attach the monitoring profile at the [edit class-of-service interfaces
interface-name] hierarchy level. For example:
[edit class-of-service]
user@host# show
interfaces {
ae0 {
monitoring-profile mp1 shared;
}
et-0/0/1 {
monitoring-profile mp1;
}
}By default, a monitoring profile that you assign to an aggregated Ethernet (ae-)
interface replicates across all members of the ae- interface. The monitoring profile
also reports virtual output queue (VOQ) depth individually on each interface. On large
systems, this process can quickly consume the maximum supported hardware monitoring
profile IDs. To conserve monitoring profile IDs, include the shared
option at the [set class-of-service interfaces ae-interface
monitoring-profile profile-name] hierarchy level. The
configured shared option creates only one monitoring profile ID to
share across all member interfaces. The option also reports the largest peak on a member
interface as the common peak for the ae- interface.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Evolved Release 22.2R1.