there is only one Ethernet which includes 4 lan ports.
I think that the eth0 is that "TELEFONO" with 2 ports
This is the output when my pc is connected to the 1st lan port
root@OpenWrt:~# swconfig dev switch0 show
Global attributes:
enable_vlan: 0
ports: 0x003f
Port 0:
pvid: 0
link: port:0 link:up speed:100baseT full-duplex auto
Port 1:
pvid: 0
link: port:1 link:down
Port 2:
pvid: 0
link: port:2 link:down
Port 3:
pvid: 0
link: port:3 link:down
Port 4:
pvid: 0
link: port:4 link:down
Port 5:
pvid: 0
link: port:5 link:up speed:100baseT full-duplex
root@OpenWrt:~# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN qlen 1000
link/ether 02:10:18:01:00:01 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br-lan state UP qlen 1000
link/ether 02:10:18:01:00:02 brd ff:ff:ff:ff:ff:ff
4: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:1c:a2:b0:4b:94 brd ff:ff:ff:ff:ff:ff
5: br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
link/ether 02:10:18:01:00:02 brd ff:ff:ff:ff:ff:ff