PVLANs между переключателями

You have a series of VLAN's that the PVLAN feature is using - the primary, the auxiliary and possibly some number of community VLAN's. The basic mechanism of PVLAN is to map traffic received on isolated ports into the auxiliary VLAN. Traffic found in the aux VLAN is transmitted on the primary when sending to promiscuous hosts. Community VLAN's operate in much the same way.

The interesting part about all of this is that the PVLAN behavior is actually locally implemented on the switch. As such, as long as the primary/aux/community VLAN numbers are consistent, making it work between switches basically consists of making sure all of the appropriate VLAN's are allowed across the trunk. The trunk doesn't need to be specially configured if it's running between switches.

As to PVLAN traffic hitting a non PVLAN switch? If the VLAN's are just switched through to another PVLAN-aware device then it works. If not, then hosts in the primary VLAN will be able to communicate with the promiscuous devices on the PVLAN-aware switch and will be able to send traffic -to- isolated ports, but traffic back from an isolated device won't be delivered.