Either case, first you need to have 2 polices on both the devices to allow any new session. If polices are in place then reproduce the issue and the take the ‘debug flow basic” with specific IP filters, on both the firewalls, during when traffic fails.
https://kb.juniper.net/InfoCenter/index?page=content&id=KB12208
Thanks and Regards
Vikas Singh
Thanks and Regards
Vikas Singh
https://kb.juniper.net/InfoCenter/index?page=content&id=KB12208
Thanks and Regards
Vikas Singh
Thanks and Regards
Vikas Singh