D-Link DIR-878 Quick Installation Manual page 27

DIR-878 Quick Installation Guide
Mesh Network Subordinate Device (Slave)
In order to configure DIR-878 as a subordinate device of your Mesh network,
from the Connection method list, select the Super Mesh value. Then
from the Device role list, select the Slave value. From the Frequency
band list, select the band where your main device (in the Master role)
operates.
Then a device in the Slave role is configured in the assess point mode. In this
mode you can change the LAN IP address, set your own settings for the
wireless network in the 2.4GHz and 5GHz bands, and set your own password
for access to the web-based interface of the device.
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