Thank you for your reply but I want to test and make it working exaclty this combination
RSTP on EX and PSTP+ on cisco.
Only after that I will try different combination.
hw
| EX3300-48T-BF |
version
JUNOS Base OS boot [12.3R9.4]
and in any case also in your coockbook the combiation rstp and pvstp+it works just fine.