S9500E-CMW520-R1828的端口镜像问题

向mirroring-group 3中添加本地镜像端口目的端口时提示

[h3c]mirroring-group 3 monitor-port GigabitEthernet 2/1/0/12 

Error: Local mirroring-group number exceeds hardware capability.

这个报错是什么原因呢

网络中的其他镜像端口

mirroring-group 1:

    type: remote-source

    status: active

    mirroring port:

        GigabitEthernet1/1/0/1  both

        GigabitEthernet1/1/0/2  both

        GigabitEthernet1/1/0/3  both

        GigabitEthernet1/1/0/5  both

        GigabitEthernet1/1/0/6  both

        GigabitEthernet1/5/0/1  both

        GigabitEthernet1/5/0/3  both

        GigabitEthernet1/5/0/4  both

        GigabitEthernet1/5/0/5  both

        GigabitEthernet1/5/0/6  both

        GigabitEthernet1/5/0/7  both

        GigabitEthernet1/5/0/8  both

        GigabitEthernet1/5/0/9  both

        GigabitEthernet1/5/0/10  both

        GigabitEthernet1/5/0/35  both

        GigabitEthernet1/5/0/37  both

        GigabitEthernet1/5/0/39  both

        GigabitEthernet1/5/0/41  both

        GigabitEthernet1/5/0/43  both

        GigabitEthernet1/5/0/45  both

        GigabitEthernet1/5/0/47  both

        Ten-GigabitEthernet1/10/0/3  both

        Ten-GigabitEthernet1/10/0/4  both

    reflector port: GigabitEthernet1/1/0/45

    remote-probe VLAN: 182

mirroring-group 2:

    type: remote-source

    status: active

    mirroring port:

        GigabitEthernet2/1/0/1  both

        GigabitEthernet2/1/0/2  both

        GigabitEthernet2/1/0/3  both

        GigabitEthernet2/1/0/5  both

        GigabitEthernet2/1/0/6  both

        GigabitEthernet2/5/0/1  both

        GigabitEthernet2/5/0/3  both

        GigabitEthernet2/5/0/4  both

        GigabitEthernet2/5/0/5  both

        GigabitEthernet2/5/0/6  both

        GigabitEthernet2/5/0/7  both

        GigabitEthernet2/5/0/8  both

        GigabitEthernet2/5/0/9  both

        GigabitEthernet2/5/0/10  both

        GigabitEthernet2/5/0/35  both

        GigabitEthernet2/5/0/37  both

        GigabitEthernet2/5/0/39  both

        GigabitEthernet2/5/0/41  both

        GigabitEthernet2/5/0/43  both

        GigabitEthernet2/5/0/45  both

        GigabitEthernet2/5/0/47  both

        Ten-GigabitEthernet2/10/0/3  both

        Ten-GigabitEthernet2/10/0/4  both

    reflector port: GigabitEthernet2/1/0/48

    remote-probe VLAN: 181

mirroring-group 3:

    type: local

    status: inactive

    mirroring port:

        GigabitEthernet2/5/0/36  both

    monitor port:

mirroring-group 5:

    type: local

    status: inactive

    mirroring port:

        GigabitEthernet1/5/0/36  both

    monitor port:

mirroring-group 11:

    type: local

    status: inactive

    mirroring port:

    monitor port: