汇聚交换机端口隔离问题咨询

有个汇聚交换机6520X-SI，端口1和端口2分别下联两个接入层交换机，vlan分别为52和53，网关都在这个汇聚交换机上，根据官方文档介绍，在汇聚交换机对应的端口1和端口2起了port-isolate，同时全局起了port-isolate mode  all，那么vlan52的终端应该是跟vlan53的终端是隔离了才是，为何vlan52和53的终端还能互相访问的，烦请各位大佬帮忙解惑，谢谢。

汇聚配置如下：

interface Vlan-interface52

 ip address 192.168.52.1 255.255.255.0

 dhcp select relay

 dhcp relay server-address 192.168.2.2

#

interface Vlan-interface53

 ip address 192.168.53.1 255.255.255.0

 dhcp select relay

 dhcp relay server-address 192.168.2.2

#

port-isolate group 1

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port-isolate enable group 1

 multicast-suppression 50

 unicast-suppression 50

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 port-isolate enable group 1

 multicast-suppression 50

 unicast-suppression 50

#

port-isolate mode all