Impact new traffic through L4 LB.
L4 LB has session limit for each size. You can check session limit as follows.
root@edge:~# grep l4_sessions /config/vmware/edge/lb/etc/lbs_*.conf /config/vmware/edge/lb/etc/lbs_large.conf:l4_sessions 2100000; /config/vmware/edge/lb/etc/lbs_medium.conf:l4_sessions 525000; /config/vmware/edge/lb/etc/lbs_small.conf:l4_sessions 105000; /config/vmware/edge/lb/etc/lbs_xlarge.conf:l4_sessions 4200000;
L4 LB cannot accept new session if session table is full. The following is example of reaching to session limit for small size.
edge> get load-balancer ########-####-####-####-##########ff session-tables | count l4lb Tue Jul 05 2022 UTC 04:53:39.558 Number of lines that match pattern 'l4lb': 105000
Please consider changing LB size if session limit is not enough to handle traffic.