https://community.checkpoint.com/t5/General-Topics/turning-off-secureXL-resolves-mac-flapping/m-p/258934#M43775 <P>two bridge mode gateways on same network with redundancy through RSTP</P><P>network is reporting MAC flapping causing performance issues</P><P>MAC address belongs to switch but somehow is coming from the gateway</P><P>turned off secureXL and flapping disappears</P><P>I somehow recall years ago that&nbsp; a similar problem occurred with two bridge mode gateways each having the same bridge group id&nbsp;</P><P>Thoughts?</P><P>&nbsp;</P> Fri, 03 Oct 2025 17:40:15 GMT Larry_Birch 2025-10-03T17:40:15Z https://community.checkpoint.com/t5/General-Topics/turning-off-secureXL-resolves-mac-flapping/m-p/258934#M43775 <P>two bridge mode gateways on same network with redundancy through RSTP</P><P>network is reporting MAC flapping causing performance issues</P><P>MAC address belongs to switch but somehow is coming from the gateway</P><P>turned off secureXL and flapping disappears</P><P>I somehow recall years ago that&nbsp; a similar problem occurred with two bridge mode gateways each having the same bridge group id&nbsp;</P><P>Thoughts?</P><P>&nbsp;</P> Fri, 03 Oct 2025 17:40:15 GMT https://community.checkpoint.com/t5/General-Topics/turning-off-secureXL-resolves-mac-flapping/m-p/258934#M43775 Larry_Birch 2025-10-03T17:40:15Z https://community.checkpoint.com/t5/General-Topics/turning-off-secureXL-resolves-mac-flapping/m-p/258966#M43777 <P>The issue is not securexl, its the fact there are same bridge group IDs, I had seen that many times before. As a matter or fact, had issue like that with customer on R82.</P> <P>Best,</P> <P>Andy</P> Sat, 04 Oct 2025 01:37:53 GMT https://community.checkpoint.com/t5/General-Topics/turning-off-secureXL-resolves-mac-flapping/m-p/258966#M43777 the_rock 2025-10-04T01:37:53Z