With RSTP (Rapid Spanning Tree Protocol), you can configure the link type of a port in an STPD (Spanning Tree Domain).
RSTP tries to rapidly move designated point-to-point links into the forwarding state when a network topology change or failure occurs. For rapid convergence to occur, the port must be configured as a point-to-point link.
RSTP Link Types describes the link types.
RSTP Link Types
| Port Link Type | Description |
|---|---|
| Auto | Specifies the switch to automatically determine the port link type. An auto link behaves like a point-to-point link if the link is in full-duplex mode or if link aggregation is enabled on the port. Otherwise, the link behaves like a broadcast link used for 802.1w configurations. |
| Edge |
Specifies a port that does not have a bridge attached. An edge port is held in the STP (Spanning Tree Protocol) forwarding state unless a BPDU is received by the port. In that case, the port behaves as a normal RSTP port. The port is no longer considered an edge port. If the port does not receive subsequent BPDUs during a pre-determined time, the port attempts to become an edge port. ExtremeXOS 11.5 or earlier—An edge port is placed and held in the STP forwarding state unless a BPDU is received by the port. In that case, an edge port enters and remains in the blocking state until it stops receiving BPDUs and the message age timer expires. |
| Broadcast | Specifies a port attached to a LAN segment with more than two bridges. A port with a broadcast link type cannot participate in rapid reconfiguration using RSTP or MSTP (Multiple Spanning Tree Protocol). By default, all ports are broadcast links. |
|
Point-to-point |
Specifies a port attached to a LAN segment with only two bridges. A port with point-to-point link type can participate in rapid reconfiguration. Used for 802.1w and MSTP configurations. |
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