what name to which network port?

[Boint1979]

We have just purchased a Netgate XG-7100 1U. Besides IX0 and IX1 which we don't use, there are 8 network ports from ETH1 to Eth8 in XG-7100 1U.
When I install pfsense, pfSense can find:

WAN (wan) -> lagg0.4090 ->
LAN (lan) -> lagg0.4091 -> v4: 10.0.1.254/24
OPT1 (opt1) -> ix0 ->
OPT2 (opt2) -> ix1 ->

The output of ifconfig is:
[2.4.4-RELEASE][root@gw.millenniuminsurance.ca]/root: ifconfig | more
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e400bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:61
hwaddr 00:08:a2:0e:d6:61
inet6 fe80::208:a2ff:fe0e:d661%ix0 prefixlen 64 scopeid 0x1
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: no carrier
ix1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e400bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:62
hwaddr 00:08:a2:0e:d6:62
inet6 fe80::208:a2ff:fe0e:d662%ix1 prefixlen 64 scopeid 0x2
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: no carrier
ix2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e500bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:63
hwaddr 00:08:a2:0e:d6:63
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect (2500Base-KX <full-duplex,rxpause,txpause>)
status: active
ix3: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e500bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:63
hwaddr 00:08:a2:0e:d6:64
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect (2500Base-KX <full-duplex,rxpause,txpause>)
status: active
enc0: flags=0<> metric 0 mtu 1536
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
groups: enc
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x10
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
groups: lo
pflog0: flags=100<PROMISC> metric 0 mtu 33160
groups: pflog
pfsync0: flags=0<> metric 0 mtu 1500
groups: pfsync
syncpeer: 224.0.0.240 maxupd: 128 defer: on
syncok: 1
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e500bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:63
inet6 fe80::208:a2ff:fe0e:d663%lagg0 prefixlen 64 scopeid 0x13
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
groups: lagg
laggproto loadbalance lagghash l2,l3,l4
laggport: ix2 flags=4<ACTIVE>
laggport: ix3 flags=4<ACTIVE>
lagg0.4090: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:63
inet6 fe80::208:a2ff:fe0e:d663%lagg0.4090 prefixlen 64 scopeid 0x14
nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
vlan: 4090 vlanpcp: 0 parent interface: lagg0
groups: vlan
lagg0.4091: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
ether 00:08:a2:0e:d6:63
inet6 fe80::208:a2ff:fe0e:d663%lagg0.4091 prefixlen 64 scopeid 0x15
inet 10.0.1.254 netmask 0xffffff00 broadcast 10.0.1.255
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
vlan: 4091 vlanpcp: 0 parent interface: lagg0
groups: vlan

My question is: How can I know which ports (ix0, ix1, lagg0.4090, etc) in pfSense are corresponding to which ports in XG-7100 (Eth1, eth2 , etc)?
How can I find devices in pfSense that are corresponding to ETH1 to ETH8 in XG-7100?

[Gertjan]

You installed pfSense and you did not see how to select WAN and LAN ???
Anyway ...
Using the most important access, the console / SSH access.
Login - on menu, go option 8.

Now, plug in a live RJ45.
You'll see a LINK-UP announcement on the login screen.
Rip it out and you see a LINK DOWN message.
With the port driver name like em0 or ix1.

[stephenw10]

The Eth ports on the XG-7100 are connected via the internal switch. You can configure them however you wish but by default Eth1 is WAN (lagg0.4090) and Eth2-Eth8 are LAN (lagg0.4091).
See: https://docs.netgate.com/pfsense/en/latest/solutions/xg-7100-1u/switch-overview.html

You can also use the etherswitchcfg command to see the current switch config from the command line.

Steve