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SFU vs HGU
ONTs can work in two different service-modes:
| Feature | SFU (Single Family Unit) | HGU (Home Gateway Unit) |
|---|---|---|
| Operation Mode | Bridge only | Bridge + Router |
| Configuration | Fully managed by OLT | Basic config from OLT + provisioning (Web GUI / TR-069 / XML provisioning / REST API) |
| VLAN Handling | Advanced (transparent, QinQ, VLAN translation and more) | Basic VLAN assignment |
SFU – Single Family Unit
SFU – only bridge and fully controlled from the OLT (advanced VLAN operations – access/transparent etc)
That allows to prepare more complex configuration – such as QinQ tunnel or VLAN translation on the ONT.
Mainly used by individual home users, which only supports broadband access terminal function, the device has 1 or 4 Ethernet interfaces, providing Ethernet/IP services, supporting VoIP service (built-in IAD) and CATV service. It mainly used in FTTH occasions (also can be used with a home gateway to provide greater business capabilities).
HGU – Home Gateway Unit
HGU – bridge and router – basic configuration assign from OLT – service configuration on ONT (by WWW / provisioning method like xml, TR-069) through IP-HOST interface for MGMT.
This mainly used for individual home users, with home gateway function, equivalent to home gateway with GPON uplink interface.
Device has 1, 2, or 4 Ethernet interfaces, WLAN interfaces, providing Ethernet/IP services, which can support VoIP, IPTV/CATV service and TR-069 remote management. The device mainly used in FTTH solutions.
Service modes supported by ONTs:
| ONT Model | HGU | SFU |
|---|---|---|
| HL-GSFP | ❌ | ✅ |
| HL-1G | ❌ | ✅ |
| HL-1GE | ✅ | ✅ |
| HL-1GE2 | ✅ | ✅ |
| HL-1GC | ✅ | ✅ |
| HL-1GR | ✅ | ✅ |
| HL-1B | ✅ | ✅ |
| HL-2GRV | ✅ | ✅ |
| HL-2BV | ✅ | ✅ |
| HL-4G | ✅ | ✅ |
| HL-4G2 | ✅ | ✅ |
| HL-4GV | ✅ | ✅ |
| HL-4GMV | ✅ | ❌ |
| HL-4GMV2 | ✅ | ❌ |
| HL-4GMV3 | ✅ | ❌ |
| HL-4GMV4 | ✅ | ❌ |
| HL-4GMVR | ✅ | ❌ |
| HL-4GQV | ✅ | ❌ |
| HL-4GQVS | ✅ | ❌ |
| HL-4GQVS2 | ✅ | ❌ |
| HL-4GXV | ✅ | ❌ |
| HL-4GXV-F | ✅ | ❌ |
| HL-4BX3V-F | ✅ | ❌ |
| HLX-SFPX | ❌ | ✅ |
| HLX-1TL | ❌ | ✅ |
| HLX-1TLV | ❌ | ✅ |
| HLX-TGV | ✅ | ✅ |
How to check service mode on Dasan OLT
When using a Dasan OLT, to check the current service mode of an ONT, please use the following command:
V5808(config-gpon-olt[1])# show onu service-mode 4
OLT | ONU | STATUS | Serial No. | Service Mode | Service Oper
1 | 4 | Active | HALN086044b0 | None | HGUAttention: do NOT switch ONT service mode manually via command below
V5808(config-gpon-olt[1])# onu service-mode 4 ?
hgu Home Gateway Unit
sfu Single Family UnitService mode will change automatically after assigning correct ONU profile.
HGU – Supported Service Scenarios
HGU mode allows to flow multiple traffic classes across VEIP.
All UNI interfaces are belonged to one VEIP and it cannot be controlled by OMCI.
This non-OMCI part can be controlled by Web and Auto provisioning.visioning
1.Bridge mode – only INTERNET:1-4/WIFI + MGMT
2.Bridge mode – INTERNET:1-4/WIFI, VoIP Interface + MGMT
3.Bridge mode – INTERNET:1-2/WIFI, IPTV:3-4, VoIP Interface + MGMT
4.Router mode – only INTERNET:1-4/WIFI + MGMT
5.Router mode – INTERNET:1-4/WIFI, VoIP Interface + MGMT
6.Router mode – INTERNET:1-2/WIFI, IPTV:3-4, VoIP + MGMT
SFU – Supported Service Scenarios
1.Access mode – only Internet
2.Access mode – only IPTV
3.Transparent mode – Internet, IPTV, VoIP
4.VLAN translation – rBSA
5.802.1q in 802.1q Begin/End of Tunnel
6.Transparent 802.1q in 802.1q
7.OSE/MdO
