https://community.checkpoint.com/t5/Firewall-and-Security-Management/ClusterXL-failover/m-p/66087#M5031 <P>for some reason I wasn't able to attach pictures...</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="01.PNG" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/2893i1B4066B2706DEDDA/image-size/large?v=v2&amp;px=999" role="button" title="01.PNG" alt="01.PNG" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="02.PNG" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/2892iC1070FD42884474F/image-size/large?v=v2&amp;px=999" role="button" title="02.PNG" alt="02.PNG" /></span></P> Mon, 28 Oct 2019 16:11:17 GMT abihsot__ 2019-10-28T16:11:17Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/ClusterXL-failover/m-p/66084#M5030 <P>Hi there,</P><P>I need a little bit help to understand the issue and troubleshoot it further...</P><P>During controlled failover of checkpoint gateway, application experiences connectivity problem. I took tcpdump on both client and server to see what is going on and I don't see one packet (marked in red) arriving on server. It appears like lost and not delivered to the server. Moreover further attempts to retransmission are not successful as well.</P><P>We use R80.30 JHF50 clusterXL active/passive mode. Service object has definitely "synchronize connections" option set to "ON". Connection persistence - rematch.</P><P>from client:</P> Mon, 28 Oct 2019 16:08:22 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/ClusterXL-failover/m-p/66084#M5030 abihsot__ 2019-10-28T16:08:22Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/ClusterXL-failover/m-p/66087#M5031 <P>for some reason I wasn't able to attach pictures...</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="01.PNG" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/2893i1B4066B2706DEDDA/image-size/large?v=v2&amp;px=999" role="button" title="01.PNG" alt="01.PNG" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="02.PNG" style="width: 999px;"><img src="https://community.checkpoint.com/t5/image/serverpage/image-id/2892iC1070FD42884474F/image-size/large?v=v2&amp;px=999" role="button" title="02.PNG" alt="02.PNG" /></span></P> Mon, 28 Oct 2019 16:11:17 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/ClusterXL-failover/m-p/66087#M5031 abihsot__ 2019-10-28T16:11:17Z