NETGEAR RT311 Reference Manual page 32

Reference Guide for the Model RT311 and RT314 Internet Access Gateway Routers
If a LNK/ACT LED is lit, a link has been established to the connected device.
If a LOCAL port is connected to a 100 Mbps device, verify that the 100 LED is lit.
4.
You are now ready to begin configuration of your network, as described in the following chapter.
2-8 Installing and Connecting the Router