Hello, I connected my ISP VDSL2 modem to my openwrt device by putting it in bridge mode and I set my wan connection as ppoe and that's how I access the internet. But the modem that ISP gave me is very bad and I don't want to pay money to buy a better device, after all, I use it in bridge mode. My question is, can I disconnect the modem that ISP gave me and connect the RJ11 vdsl cable to my openwrt device that I use on raspberry pi4 with some kind of converter? I am also attaching the topology.
You need a select AVM fritzbox to have OpenWRT with open driver supported modem. There is no DSL USB plug.
Because your incoming connection is DSL on an RJ11, you must use a modem to convert it to standard ethernet with an RJ45 plug (it's not just the plug type -- the electrical signaling is entirely different).
So, that modem must be in the system, otherwise you cannot physically connect. However, the next steps are a question about what your modem can do...
- You may be able to set the modem such that it terminates the PPPoE session, but performs no routing. It would simply pass the ISP issued IP address to your downstream device (your Pi).
- It might be possible to simply use the modem for the signaling conversion, but terminate the PPPoE session on the OpenWrt Pi instead of the ISP modem.
- Or, if neither are options, your modem will operate as modem+router. In that case, there's not a lot you can do, but maybe the modem would have the ability to specifiy static routes to avoid double-NAT.
It sounds like that's what they're already doing.
Since you already have your ISP modem operating in bridge only mode, all of the hard work is being done by your openwrt device.
I find it incredibly hard for your ISP modem to be a bottleneck with your current setup. Do you experience any problems with this setup? What is your ISP provided bandwidth?
I get 75mbps download 10mbps upload speed from my ISP provider, but the distance between my service provider and me is a bit far, so my infrastructure supports up to 75mbps, which is the same as my internet speed, but I see 70 and sometimes even 65mbps in my home (I test without any device connected), of course, since I use the modem given by the ISP in bridge mode, I know that the load is on my openwrt device, not on it, but the modem given by the ISP is a bit old, so I was wondering if this speed loss is due to the oldness of the modem.
1 Like
IMHO, a 5-10mbps drop is nothing to worry about. Your setup is fine.
Drops like these occur in all types of setups and hardware. It's a result from external factors, outside of the scope of us end users.
1 Like