Allied Telesis AT-MR815T - Manual (Page 27)

AT-MR415T and AT-MR815T Installation Guide
17
Note
Regardless of your current network configuration, the maximum
number of AT-MR415T/AT-MR815T Micro Repeaters which can be
cascaded together is four.
Before expanding a network through a T-port, consult the network
administrator. Be sure that the expansion will not exceed the limit defined by
the current LAN configuration before proceeding. See Figure 9.
Figure 9: LAN Connectivity