Planet Technology ISW-800M - Manual (Page 20)

3.5 Dual Homing Application
Dual Homing function is to prevent the connection lose between redundant ring group and upper
level/core switch. Assign two ports to be the Dual Homing ports that one is working port and one is
backup port in the redundant ring group. The backup port that has smaller MAC address value will be
selected by switch automatically. The Dual Homing function only work when the redundant ring function
is active. The maximum Dual Homing port is two in a redundant ring group. And each switch only can
assign one Dual Homing port.