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Understanding Orbi Radio (Fronthaul + Backhaul)
Here is a summary of my understanding of Orbi Radio. I will list them below and I hope that this will help to understan how Orbi works and thus to help in troubleshooting connectivity issues:
1...
More information:
You can use telnet to Orbi to see all the radio channels (IP links) as follows:
root@RBR50:/# ip link show
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18: ath0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 7e:d2:94:ba:08:dc brd ff:ff:ff:ff:ff:ff (Fronthaul 2.4GHz)
19: ath01: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 82:d2:94:ba:08:dc brd ff:ff:ff:ff:ff:ff (Backhaul 2.4GHz)
20: ath02: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 86:d2:94:ba:08:dc brd ff:ff:ff:ff:ff:ff(Backhaul-ADD 2.4GHz)
21: ath1: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 78:d2:94:ba:08:de brd ff:ff:ff:ff:ff:ff (Fronthaul 5GHz)
22: ath11: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 7e:d2:94:ba:08:de brd ff:ff:ff:ff:ff:ff (Backhaul-ADD5GHz)
23: ath2: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 78:d2:94:ba:08:df brd ff:ff:ff:ff:ff:ff (Backhaul 5GHz)
So the name of the radio channels according to the wifi scan in the picture in the previous post will be as follows:
ath0 (Fronthaul 2)
ath01 (Backhaul 2)
ath02 (Backhaul 4)
ath1 (Fronthaul 1)
ath11 (Backhaul 3)
ath2 (Backhaul 1)
More information:
You can use telnet to Orbi to see all the radio channels (IP links) as follows:
root@RBR50:/# ip link show
:
:
:
:
:
:
18: ath0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 7e:d2:94:ba:08:dc brd ff:ff:ff:ff:ff:ff (Fronthaul 2.4GHz)
19: ath01: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 82:d2:94:ba:08:dc brd ff:ff:ff:ff:ff:ff (Backhaul 2.4GHz)
20: ath02: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 86:d2:94:ba:08:dc brd ff:ff:ff:ff:ff:ff(Backhaul-ADD 2.4GHz)
21: ath1: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 78:d2:94:ba:08:de brd ff:ff:ff:ff:ff:ff (Fronthaul 5GHz)
22: ath11: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 7e:d2:94:ba:08:de brd ff:ff:ff:ff:ff:ff (Backhaul-ADD5GHz)
23: ath2: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UNKNOWN mode DEFAULT group default link/ether 78:d2:94:ba:08:df brd ff:ff:ff:ff:ff:ff (Backhaul 5GHz)
So the name of the radio channels according to the wifi scan in the picture in the previous post will be as follows:
ath0 (Fronthaul 2)
ath01 (Backhaul 2)
ath02 (Backhaul 4)
ath1 (Fronthaul 1)
ath11 (Backhaul 3)
ath2 (Backhaul 1)
Also you can use the following command to see the transmission power on all radio links (backhaul and fronthaul):
root@RBR50:~# iwlist ath2 txpower
ath2 8 available transmit-powers :
0 dBm (1 mW)
6 dBm (3 mW)
10 dBm (10 mW)
14 dBm (25 mW)
18 dBm (63 mW)
22 dBm (158 mW)
26 dBm (398 mW)
30 dBm (1000 mW)
Current Tx-Power:30 dBm (1000 mW)A good illustration for Orbi wireless architecture: