Mechanism to implement a layer 2 gateway

摘要

A system in an operating system of a first network device for using Spanning Tree Protocol to determine a port of a device in a first administrative domain to transmit data between the first network device and a second administrative domain. The system determines each port in a device of the first administrative domain connected to a bridge for transmitting between the first network device and the second administrative domain. A priority of each these ports is determined by priority data. The port having a highest priority is then selected to transmit said data between said first network device and said second administrative domain.

主权项

1. A method, comprising:
setting priority values for one or more ports in a set of ports in a set of network devices, the network devices being associated with a first administrative domain, where members of the set of ports are associated with a priority value; selecting a port from the set of ports, the selected port being connected to a bridge that is configured to transmit data between the first administrative domain and a second administrative domain, where the selected port is selected based, at least in part, on a priority value associated with the selected port; preventing a transient loop by,
changing a state of the selected port to a forwarding state, where the forwarding state facilitates transmissions between the first administrative domain and the second administrative domain,receiving, by the selected port, Bridge Protocol Data Units (BPDUs) while being connected to the bridge, andignoring incoming BPDUs from one or more members of the set of ports that are not selected.