AC88U的8个交换机口如何来区分？用robocfg show怎么只能看见6个

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admin@RT-AC88U-B370:/tmp/home/root# robocfg show

Switch: enabled

Port 0:   DOWN enabled stp: none vlan: 1 jumbo: off mac: 42:9b:d3:2a:0a:16

Port 1: 1000FD enabled stp: none vlan: 1 jumbo: off mac: 94:c6:91:bb:7f:8f

Port 2:   DOWN enabled stp: none vlan: 1 jumbo: off mac: 00:00:00:00:00:00

Port 3:  100FD enabled stp: none vlan: 1 jumbo: off mac: 00:11:22:33:44:5b

Port 4: 1000FD enabled stp: none vlan: 2 jumbo: off mac: cc:1a:fa:ee:cc:80

Port 5: 1000FD enabled stp: none vlan: 1 jumbo: off mac: 00:a0:de:fa:43:65

Port 7: 1000FD enabled stp: none vlan: 1 jumbo: off mac: 20:f4:78:f8:5a:52

Port 8: 1000FD enabled stp: none vlan: 2 jumbo: off mac: b0:6e:bf:dc:b3:70

VLANs: BCM5301x enabled mac_check mac_hash

   1: vlan1: 0 1 2 3 5 7 8t

   2: vlan2: 4 8u

我理解4是WAN口  8是CPU口 0 1 2 3 5 7是LAN口，那还缺2个LAN口啊