Zkusil jsi pohrat si s tema HW switchema? Ja bych dal ty porty vsechny do obou HW switchu (pomoci master/slave u nastaveni sitovky) a pak bych jen bridgoval ty dva master porty, tedy ty switche. Takto to mam nastaveno a funguje mi to.
hint:
The ports are mapped to two groups. For clarity we'll call them A and B.
Group A has ports 1, 6, 7, 8, 9
Group B has ports 2, 3, 4, 5