https://community.cisco.com/t5/network-security/failopen-cause-traffic-loss/m-p/2639906#M1037525 <P>When rebooting the 3D8250 devices the failopen cause traffic los for arounf 5 to 45 seg. Why is this?</P> Tue, 12 Mar 2019 12:39:32 GMT DLozadaD85 2019-03-12T12:39:32Z https://community.cisco.com/t5/network-security/failopen-cause-traffic-loss/m-p/2639906#M1037525 <P>When rebooting the 3D8250 devices the failopen cause traffic los for arounf 5 to 45 seg. Why is this?</P> Tue, 12 Mar 2019 12:39:32 GMT https://community.cisco.com/t5/network-security/failopen-cause-traffic-loss/m-p/2639906#M1037525 DLozadaD85 2019-03-12T12:39:32Z https://community.cisco.com/t5/network-security/failopen-cause-traffic-loss/m-p/2639907#M1037531 <P>If link state propagation in enabled your attached switches could be triggering a spanning tree event on the switch ports the sensor is attached before the sensor completes a shutdown then fail open condition. &nbsp;</P><P>From the switch port side make sure that portfast is enabled.</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 15 Apr 2015 14:46:16 GMT https://community.cisco.com/t5/network-security/failopen-cause-traffic-loss/m-p/2639907#M1037531 scdugan 2015-04-15T14:46:16Z