@iosnetadmin It has happened several times, to get back the display of traffic I have to restart the router, everything seems to work normally but something is happening with communications between...

@Colinu Switch ACL is not staefull so use ut with care, if you do somthing wrong you can lock out everything include the switch access to controller., and use bidirectional to allow something.

@Colinu and do alow roule bidirectional

@Colinu Yes somthing like that and it doesn't matter which router you have, you enter the router's IP

@Colinu switch acl, just remember and allowed gateway ip before deny roule

@MR.S You can try with this ip