Hi, i repost this problem with additional data/information and attach the config.
My current setup as follow :
I have 2 devices from ISP : a modem and wifi router (Let’s name this router as router A)
I have my own wifi router. Let’s name it router B.
Router A is on 1st floor. Router B is on 2nd floor.
Internet —> ISP modem —> ISP wifi router (router A) —> all devices { wireless router B, server, PC, laptop , handphone etc }
I bought a mikrotik switch CRS326 https://mikrotik.com/product/CRS326-24G-2SplusRM
I have 2 scenarios :
Scenario A : connect the CRS326 to router A
Internet → ISP modem → router A → CRS326 – > all devices.
In this scenario, Internet works as expected. No problem.
Scenario B : connect the CRS326 directly to ISP modem
Internet → ISP modem → CRS326 → all devices
So now , the router A is behind the CRS326 and use the router functionality of CRS326 to act as master router.
The Problem : internet connection drop about 1/10 . For example when browsing youtube, normally i can load the page in a split second but now it takes more than 1 minutes to load the page and most the time the video will not play.
I’m aware that CRS326 is not a router, it’s a switch but it has the router functionality with routerOS. But there won’t be heavy routing jobs , i use this CRS326 mostly only for LAN traffic. For example : i have 5 PC for editing and want to access data on local server. The need to access the internet only for browsing. Anyway in this test, i only use 1 laptop , no other load , so that severe slowness didn’t make sense.
I didn’t use any fancy setup, just very basic setup. When i switch the cable to Scenario A, the speed goes back to normal again, but every time i switch to Scenario B, it always back to become very slow. I don’t understand why this happen, setting are just the same.
The problem solved if i use scenario A. But I want to implement scenario B , can someone spot what is wrong or what cause the slowness ?
Also later, i plan to add 2nd ISP so then both ISP will be connected to my CRS326 and want to use load balance to get higher overall upload speed.
I exported the config and attached them in this post. there 2 attachment ( NORMAL : setting i use in scenario A and SLOW : setting i use in scenario B/slow problem )
slow.rsc (2.43 KB)
normal.rsc (2.43 KB)