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

## SYSLOG Details
- **Message**: Either tunnel key or clear-dont-fragment-bit must be configured for this GRE tunnel (<variable>interface-name</variable>), to enable post fragmentation
- **Help**: GRE tunnel configuration invalid for this interface
- **Description**: This interface needs either the tunnel key or the clear-dont-fragment-bit to be configured along with allow-fragmentation
- **Type**: Error: An error occurred
- **Severity**: error
- **Cause**: -
- **Action**: Configure either the tunnel key or clear-dont-fragment-bit for this tunnel
- **Attributes**: interface-name
- **Facility**: LOG_DAEMON

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