VSX system MAC

[aopdal]

The system MAC for the VSX peers is incremented by one (the rack number).

When using STP on a VSX cluster you should not use system MAC addresses incremented by one, according to VSX documentation.
Find the info in VSX documentation chapter "STP over VSX".

If you are using vsx_system_mac: 02:00:00:00:10:01 then you can't use 02:00:00:00:10:00 and 02:00:00:00:10:02.
If you want to increment by one you may do it like 02:00:00:10:xx:01 and increment the xx by one.