Then, if I've understood well after read it, for this example case (ip link set eth1.20 type vlan egress 0:2), each LAN VLAN with a egress priority setted as 0, will have a priority to egress of 2 from WAN. I say this because in my case the VLAN eth1.20 is the WAN interface.
Like my ISP doesn't divide the data and voice, the ingress (at WAN interface) will be ever 0 for data and voice, but once time that data and voice passtrough the WAN interface, I can set the priority for voice and data, no?
One example to see if I have understood well:
#####INGRESS_PRIORITY####
Set that the voip VLAN (0.25) ingress priority is 0, the syntax will be:
ip link set eth0.25 type vlan ingress 0:0
Set that the servers VLAN (0.30) ingress priority is 2, then the syntax is:
ip link set eth0.30 type vlan ingress 0:2
#####EGRESS_PRIORITY####
Set that the voip VLAN (0.25) egress priority is 0, the syntax will be:
ip link set eth0.25 type vlan egress 0:0
Set that the servers VLAN (0.30) egress priority is 1, then the syntax is:
ip link set eth0.30 type vlan egress 2:1
I don't know if I've understood well the VLANs priority works and/or the syntax, I've doubts about the two lastest syntaxs, mainly the 0.30 egress.