VPN Connectivity issue with new SMCD3G-CCR

Hello crashlab and welcome,

Please see my comments/questions below. Thanks.

Comcast upgraded our internet conenctivity speed and replaced our old box with an SMCD3G-CCR.

On the internet connection there is a static address assigned from Comcast.

So your SMC has a 1, 5, or 13 block statis IP?  

On the WAN connection there is an IP address assigned 10.1.10.1.

I think you mean "On the LAN", because if you have a staticIP then the SMC WAN will be populated with the Static IP Gateway and subnet mask addresses. The SMC LAN DHCP server address is 10.1.10.1 with subnet mask 255.255.255.0  .

The Linksys that is connected to the 10.1.10.1 port has a DHCP address of 10.1.10.10 assigned to the port from the Comcast SMCD3G-CCR.

Could you explain what the networking purpose is of your Linksys router?

I have read threads that says to assign a comcast address to the WAN port on the Linksys connection - is this correct?

xx.xxx.xxx.xx ------ SMCD3G-CCR  --- LAN IP  10.1.10.1 ------- Linksys WAN 10.1.10.11 ------ Linksys LAN 192.168.2.1

                                                                               ????????                                  ?????????

If you are using your Linksys as a FW or controlling router, then you should program its WAN with your staticIP routeable, gateway, and subnet mask addresses. Also it is good networking proactice to included your DNS addresses, too. Lastly, if you are using the Linksys internal DHCP server, then you should disable the SMC DHCP server to avoid any potential DHCP conflicts resulting in packet loss, traceroute hop issues, etc.

If you are using your Linksys router just as a wireless device internet access, then you can simply connect its INTERNET ENET port to any SMC LanPorts 1-4s and use the SMC DHCP router for wifi dynamic IP access.  This means you will need to disable your Linksys internal DHCP server to again avoind DHCP servers conflicts.

Hope this helps you out.