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PineReach's avatar
PineReach
Tutor
Dec 17, 2019
Solved

cm1200 to Synology RT2600ac

I just replaced my old modem with a new CM1200 and I am having a little trouble. BTW, my isp is Comcast. On modem internet connection is Good. Ethernet Port Aggregation Status is checked but: Inacti...
  • PineReach's avatar
    PineReach
    Dec 17, 2019

    Interesting.  I followed your procedure and here is the result:

     

    Netgear CM1200 LAN1 to RT2600ac WAN good connection. <<current connection>>

    Netgear LAN2 to RT LAN1 no connection. <<current connection>>

     

    Basically everything reversed. 

    You are right about aggregation on the Synology.  Probably looking at getting a new router.

    Thanks!

plemans's avatar
plemans
Guru - Experienced User
Dec 17, 2019

You are missing something. 

you can't* have your computer and your router direct connected to the CM1200. Port 1 and port 2 are for link aggregation. If you're not using that (link aggregation), you can only really use port 1 for most consumers. and the Router you're using doesn't have wan side link aggregation that I could find. 

So go CM1200-----router----pc. 

 

*Some ISP's will provide multiple IP addresses and that does allow the other ports to be used. That's rare though and tends to be the business class connection. If you're on a consumer setup, most don't allow more than 1 IP. 

 

For the majority of users (home users) the CM1000 or CM1100 is what they should be looking at. 

plemans's avatar
plemans
Guru - Experienced User
Dec 17, 2019

I must have missed it, the synology does support WAN aggregation. 

You'd still need to go cm1200----synology---pc though

  • plemans's avatar
    plemans
    Guru - Experienced User
    Dec 17, 2019

    Feeling even more stupid. The more you research wan port aggregation for the synology the more it looks like its for dual wan with load balancing/fail over. Not wan aggregation. So you could have 2x devices such as a modem and a mobile router for fall back or load balancing. 

    Not very well documented on their part. You'd want to contact synology forums or support for more details on their wan side stuff. 

    • plemans's avatar
      plemans
      Guru - Experienced User
      Dec 17, 2019

      BTW disabled wan port aggregation on the CM1200. 

      • plemans's avatar
        plemans
        Guru - Experienced User
        Dec 17, 2019

        Reason I said disable it in the cm1200, is that from what I can read, wan port aggregation doesn't work with the synology. 

        You CAN run dual modems to it or modem-mobile router type setup with load balancing/fail over. But you can't run single modem setup to both wan and lan1 port. 

        again, this is just the brief research I did on the synology router. They'd be the experts on their device. 

        but unless you have a router with true wan port aggregation, having the cm1200 port aggregation enabled/connected will cause issues with the cm1200.