ACL problems after upgrading to EXOS 15.3 or higher
Table Full, more ACL-slice usage or misbehaving access-list actions after a switch is upgraded to 15.3 or higher.
EXOS 15.3 and higher
This is caused by a change in the default setting for access-list vlan-acl-precedence. In 15.2 and lower this was set to shared default. This uses less slices/rules as when it is configured for dedicated. In 15.3 and higher the vlan-acl-precedence default setting is set to dedicated. If a switch is upgraded from 15.2 to 15.3 or higher it will start using more acl-slices and rules.
use "show access-list configuration" to see the settings. sh access-list configuration Access-list Refresh Blackhole: Enabled Access-list configured vlan-acl-precedence mode: Dedicated Access-list operational vlan-acl-precedence mode: Dedicated Access-list Rule-compression Port-counters: Dedicated
Change the vlan-acl-precedence back to the setting used before to get the same behavior.
configure access-list vlan-acl-precedence shared
Check below solutions for detailed information about other issues related to this.