Switching

Hello;

I have recently purchased an EX-2200 switch and I am willing to connect its 1 port to a router having around 40 VLANS and also untagged traffic, and other ports to several devices having VLANs and untagged traffic as well.

How can I take all the ports in a trunk which can pass all VLANs + untagged traffic ?

use the native-vlan-id statement along with the mode trunk

useradmin@Switch-12# set interfaces ge-0/0/12 unit 0 family ethernet-switching default port-mode trunk vlan members all
useradmin@Switch-12#set interfaces ge-0/0/12 unit 0 family ethernet-switching native-vlan-id default

(You typye the whole thing on one line too:) like this:
useradmin@Switch-12# set interfaces ge-0/0/12 unit 0 family ethernet-switching native-vlan-id default port-mode trunk vlan members all

https://kb.juniper.net/InfoCenter/index?page=content&id=KB17419&smlogin=true

Thank you for the answer.

Furthermore, If I want the switch to pass everything (tagged VLAN + untagged) from ALL the ports (more like to act as a dumb switch ), do I have to write the command for each physical port or is there an easier and shorter way?

You can use the interface range command to group the ports together and then you only have to specify the VLAN information once. 

user@host# set interface interface-range <range-name> . . . . (interfaces to be grouped, followed by physical, logical properties)

Very powerful