# [COSD_HIGH_PRIO_QUEUES_SESSION](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION)

## SYSLOG Details
- **Message**: Unable to apply CoS to L2TP session <variable>session-id</variable>, because multiple schedulers in scheduler map <variable>scheduler-map</variable> have "high,""medium-high," or "strict-high" priority
- **Help**: Multiple schedulers for L2TP session have high-level priority
- **Description**: The class-of-service (CoS) process (cosd) did not apply CoS settings to the indicated Layer 2 Tunneling Protocol (L2TP) session because the scheduler map specified by the RADIUS server for the session includes more than one scheduler that has high, medium-high, or strict-high priority. For interfaces that are housed by certain Physical Interface Cards (PICs), such as an IQ2 PIC, the scheduler map can include only one scheduler that specifies one of those three priority levels. In terms of configuration, the 'priority' statement at the [edit class-of-service schedulers &lt;scheduler-name>] hierarchy level has the value 'high, ' 'medium-high, ' or 'strict-high' for more than one of the schedulers in the map. The map is associated with a traffic control profile that is named by an attribute in the RADIUS server's configuration file, which makes the profile apply to the session.
- **Type**: Error: An error occurred
- **Severity**: error
- **Cause**: -
- **Action**: Correct the configuration so that the scheduler map includes only one scheduler with high, medium-high, or strict-high priority.
- **Attributes**: session-id
scheduler-map
- **Facility**: LOG_DAEMON

## Found this message in the following releases:
- [Junos OS 26.2R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=26.2R1)
- [Junos OS 25.4R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=25.4R1)
- [Junos OS 25.2R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=25.2R2)
- [Junos OS 25.2R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=25.2R1)
- [Junos OS 24.4R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=24.4R2)
- [Junos OS 24.4R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=24.4R1)
- [Junos OS 24.2R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=24.2R2)
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=23.4R2)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=23.4R1)
- [Junos OS 23.2R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=23.2R2)
- [Junos OS 23.2R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=23.2R1)
- [Junos OS 22.4R3](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=22.4R3)
- [Junos OS 22.4R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=22.4R2)
- [Junos OS 22.4R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=22.4R1)
- [Junos OS 22.2R3](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=22.2R3)
- [Junos OS 22.2R2](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=22.2R2)
- [Junos OS 22.2R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_HIGH_PRIO_QUEUES_SESSION&sw=Junos%20OS&rel=22.2R1)