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

## SYSLOG Details
- **Message**: Lost adjacency to <variable>neighbor-system-id</variable>s on <variable>interface-name</variable>, reason: <variable>reason</variable>
- **Help**: Virtual chassis adjacency was terminated
- **Description**: A virtual chassis adjacency with the indicated neighboring switch was terminated. The local switch no longer exchanges information with the neighboring switch.
- **Type**: Event: This message reports an event, not an error
- **Severity**: notice
- **Cause**: The communication path to the neighboring switch was disrupted, a protocol error occurred, or the neighboring switch was powered down.
- **Action**: -
- **Attributes**: neighbor-system-id
interface-name
reason
- **Facility**: LOG_DAEMON

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