Конечно можно реализовать.
Вот примерчик для похожей схемы:
Client1 -(25 port)DES-3200-28F(26 port) - (11 port)DGS-3612G(10 port) - Client2
Код:
#DGS-3612G
config vlan default delete 1-12
config vlan default add untagged 1-12
config vlan default advertisement enable
create vlan test1 tag 400
config vlan test1 add tagged 10 advertisement disable
create vlan double1000 tag 1000
config vlan double1000 add tagged 10-11 advertisement disable
enable qinq
config gvrp 1-12 state disable ingress_checking enable acceptable_frame admit_all pvid 1
config qinq ports 10 role uni missdrop enable outer_tpid 0x8100
config qinq ports 11 role nni missdrop enable outer_tpid 0x8100
create vlan_translation ports 10 cvid 400 add svid 1000
Код:
#DES-3200
config vlan default delete 1-28
config vlan default add untagged 1-28
config vlan default advertisement enable
create vlan test1 tag 400
config vlan test1 add tagged 25 advertisement disable
create vlan double1000 tag 1000
config vlan double1000 add tagged 26 advertisement disable
config vlan double1000 add untagged 25
enable qinq
config gvrp 1-28 state disable ingress_checking enable acceptable_frame admit_all pvid 1
config qinq ports 25 role uni outer_tpid 0x8100 vlan_translation enable
config qinq ports 26 role nni outer_tpid 0x8100 vlan_translation enable
create vlan_translation add cvid 400 svid 1000
config qinq ports 25 trust_cvid enable