In the context of the widespread adoption of IPTV, many households likely have reserved network cable interfaces on their TV walls. Typically, this interface is only used to connect the IPTV set-top box to the optical modem, but there are situations where the router also needs to be placed behind the TV. In this case, how can one interface achieve both router internet access and IPTV viewing?
The keywords for network search are "IPTV transparent transmission" and "single line reuse."
First, connect the WAN port of the router to the LAN port of the optical modem, and connect the set-top box to the LAN port of the router. This article takes the Tianyi Gateway as an example.
Preparation#
Before starting, you need to obtain the super administrator password for the optical modem to access the backend for advanced settings. Generally, you can contact the technician who installed your broadband or apply for "broadband repair" in the corresponding service hall app to have the technician contact you. Just say, "I want to enable IPv6 at home," and the technician will usually assist you.
You can log in to the Tianyi Gateway backend with the username: telecomadmin
and the obtained password (the address is usually 192.168.1.1, note that it is not the router backend). Typically, it looks like this old-fashioned UI interface.
Don't rush to explore yet; click on "Network" and select the connection name. The one labeled "INTERNET" is the network connection you are currently using, while the one labeled "Other" set to bridge mode is generally the IPTV connection. The number following the connection name usually represents the VlanID of this connection.
Operation#
The first step is to unbind the "LAN port binding" for both connections.
The second step is to click on "VLAN Binding" in the sidebar and bind the network port connected to the router with "INTERNET" and "Other." Fill in the corresponding numerical suffix for "User Side VLAN." In the image, "Port 3" is the port connected to my router, and "4_Other_B_VID_45" corresponds to the "User Side VLAN," which is 45
. After filling it in, click save.
The third step is to log in to the backend of the router connected to the set-top box, find the relevant IPTV functions. Here, taking the ZXHN E1630 as an example, after entering the advanced configuration interface, you can quickly find the setting option in "Application Function," enable it, and also enable VLAN. Fill in the "VLAN ID" with the same value as "Other," which is 45
. "Bind LAN port" refers to the LAN port connected to the set-top box; here, it is Port 1, which is "LAN 1."
The fourth step is to symbolically restart the router and the set-top box, and you're done.
Explanation#
Of course, if your router does not support transparent transmission, there are more complex switching or splitting methods, which will not be elaborated here. If your requirement is to use one network cable for both the router and the IPTV set-top box, it is completely not recommended to tinker with it; it would be better to buy another router.
Additionally, since you can access the optical modem backend, the operation to enable IPv6 can also be unlocked, which will not be elaborated here, hahahaha.