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DDOS violation logs on Router reboot

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  • 1.  DDOS violation logs on Router reboot

    Posted 07-26-2022 17:08
    I have come across a case in which MX480 router running on JUNOS 17.3R3 froze for 2 hours until it was rebooted and the backup router started generating DDOS_SCFD_FLOW_FOUND logs continuously, When the device came up after reboot even it started generating same DDOS_SCFD_FLOW_FOUND logs. 
    Though they later cleared as well with the log DDOS_SCFD_FLOW_RETURN_NORMAL and DDOS_PROTOCOL_VIOLATION_CLEAR.
    the DDOS protection in the configuration is for 1000.

    ddos-protection {
    global {
    protocols {
    reject {
    aggregate {
    bandwidth 1000;