Setting Up a Time Capsule/Airport as Primary With E4200 Cascade

[WaltL]

I have a Time Capsule current generation, as my primary router connected to my ISP. I'm using a Linksys E4200 as my slave router connected to the Time Capsule via lan to lan. I noticed the TC Internet Connection TCP/IP via DHCP shows a Subnet Mask of 255.255.248.0 and the Surewest IP of 74.222.246.23

Is the 248 setting one I will need on the slave?

The TC IP Address is 10.0.1.1 the DHCP Beginning Address is 10.0.1.3 to allow for the slave to have 10.0.1.2.

The E4200 is set as follows on the routers setup page, Internet Section to Automatic DHCP, Network Section to IP 10.0.1.2 Subnet Mask 255.255.255.0 and DHCP is Disabled.

Both routers have a SSID set to the same name.

Are all these settings correct? I've noticed that a device iPhone or iPad etc has a different IP address assigned by the TC depending on which router it is actually connected. I've also noticed difficulty of a device on one router communicating with one on the other.

Any advice on how to clean up my setup is appreciated.

 

[WaltL]

I was mistaken regarding different IP addresses when actually connecting to a specific router. That was before I made the SSID names the same.