Allied Telesis AT-S110, AT-GS950/10PS manual Multiple Spanning Tree Protocol

Chapter 5: Multiple Spanning Tree Protocol

ForcedTrue - The port is connected to a network device in the network topology.

ForcedFalse - The port is not connected to a network device in the network topology.

Auto - The switch will automatically determine the port type.

Edge Port - Indicates if a port is connected to an edge device in the network topology or not. See “Point-to-Point and Edge Ports” on page 66 for more information.

True - The port is connected to an edge device and the port will always be in a forwarding state.

False - The port is not connected to an edge device.

MSTP Status - Indicates if MSTP is Enabled or Disabled.

Enabled - MSTP is active on the port.

Disabled - MSTP is inactive on the port.

Protocol Migration - A switch running MSTP supports a built-in protocol migration mechanism that enables it to inter-operate with legacy 802.1D switches.

True - The switch is able to inter-operate with 802.1D BPDU packets.

False - This switch can only operate with RSTP and MSTP packets.

Hello Time - The Hello Time is frequency with which the root bridge sends out a BPDU. See “Hello Time and Bridge Protocol Data Units (BPDU)” on page 66 for more information.

AutoEdge Status - This parameter allows the switch to detect if the port functioning as an edge port.

Restricted Role - This parameter prevents the port from becoming a root port.

True - The port is prevented from being a root port or a port that is used to communicate with the root bridge.

False - This switch can only operate with RSTP and MSTP packets.

The net effect of setting all ports on the switch to True is that it forces the switch into the role of the root bridge regardless of other path costs in the network.

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