TCP/IP Connections

We have a Comcast modem, it is SMCD3G-CCR. How many concurrent connection does it support?

Hello SSD and welcome,

If you are referring to the SMCD3G internal DHCP server/router, this facility supports a standard dynamic IP address range from 10.1.10.10 to 10.1.10.199. So this means that 189 concurrent connections would be typically supported. If you are looking for this type of conncurrent interconnectivity for general data transactional processing, this may require an internet speed tier minimum 50 Mbps down / 10 Mbps up to 100 Mbps down / 20 Mbps up, which the SMCD3G supports.

If you need Comcast 150 Mbps down / 20 Mbps up, then you will need to upgrade your Comcast Modem to either the NetGear 3000 or the DPC3939B. The supported Business Class speed tiers / modems can be found here.  Just move the blue ball in the business speed tiers gauge and it will show you this information.  

Hope this helps you out.