Spanning tree protocol port-based link selection system
An STP link selection system includes a designated switch device that receives a first communication that indicates that a first link provided to a non-designated switch device from a first port is available and, in response, automatically assigns the first port with a primary port priority. The designated switch device then subsequently receives a second communication that indicates that a second link provided to the non-designated switch device via a second port is available and, in response, the second port is automatically assigned with a secondary port priority. The designated switch device identifies a first port identifier that is based on the primary port priority to the non-designated switch device and, based on the first port identifier relative to a second port identifier that is based on the secondary port priority, the non-root switch device transmits communications via the first link and blocks communications via the second link.
1. A Spanning Tree Protocol (STP) link selection system, comprising:
a non-designated switch device; and
a designated switch device that includes a plurality of ports that are each connected to the non-designated switch device, wherein the designated switch device is configured to:
receive, from a first port that is included in the plurality of ports, a first communication that indicates that a first link provided to the non-designated switch device via the first port is available;
automatically assign, in response to receiving the first communication, the first port with a primary port priority;
receive, from a second port that is included in the plurality of ports and subsequent to receiving the first communication from the first port, a second communication that indicates that a second link provided to the non-designated switch device via the second port is available, wherein the second port is automatically assigned a secondary port priority that is different than the primary port priority;
identify, to the non-designated switch device, a first port identifier that is based on the primary port priority assigned to the first port, wherein the non-designated switch device is configured to:
transmit, based on the first identifier relative to a second port identifier that is based on the secondary port priority assigned to the second port, communications via the first link provided by the first port; and
block, based on the second port identifier relative to the first port identifier, communications via the second link provided by the second port.
2. The system of claim 1 , wherein the designated switch device includes:
a queue that is associated with the non-designated switch device, wherein the automatically assigning the first port with the primary port priority includes automatically adding the first port to the queue and automatically associating the first port with the primary port priority in the queue in response to receiving the first communication, and wherein the automatically assigning the second port with the secondary port priority includes automatically adding the second port to the queue and automatically associating the second port with the secondary port priority in the queue in response to receiving the second communication.
3. The system of claim 1 , wherein the designated switch device is configured to:
determine that the first link provided by the first port is unavailable and, in response:
automatically unassign the primary port priority from the first port;
automatically unassign the secondary port priority from the second port; and
automatically assign the second port the primary port priority.
4. The system of claim 3 , wherein the designated switch device is configured to:
automatically associate, in response to receiving the first communication, the first port with a primary position in a link identification order; and
automatically associate, in response to receiving the second communication, the second port with a secondary position in the link identification order that is different than the primary position, wherein the automatic unassigning of the secondary port priority from the second port and the automatic assigning of the primary port priority to the second port is performed based on the secondary position of the second port in the link identification order.
5. The system of claim 1 , wherein the designated switch device is configured to:
receive, from a third port that is included in the plurality of ports and subsequent to receiving the first communication from the first port, a third communication that indicates that a third link provided to the non-designated switch device via the third port is available, wherein the third port is automatically assigned a tertiary port priority that is different than the primary port priority, and wherein the non-designated switch device is configured to:
block, based on a third port identifier that is based on the tertiary port priority assigned to the third port relative to the first port identifier, communications via the third link provided by the third port.
6. The system of claim 1 , wherein the secondary port priority is a default STP port priority value, and wherein the primary port priority is an STP port priority value that is less than the default STP port priority value.
7. An Information Handling System (IHS), comprising:
a processing system; and
a memory system that is coupled to the processing system and that includes instructions that, when executed by the processing system, cause the processing system to provide a Spanning Tree Protocol (STP) link selection engine that is configured to:
receive, from a first port, a first communication that indicates that a first link provided to a non-designated switch device via the first port is available;
automatically assign, in response to receiving the first communication, the first port with a primary port priority;
receive, from a second port and subsequent to receiving the first communication from the first port, a second communication that indicates that a second link provided to the non-designated switch device via the second port is available wherein the second port is automatically assigned a secondary port priority that is different than the primary port priority;
identify, to the non-designated switch device, a first port identifier that is based on the primary port priority assigned to the first port in order to cause the non-designated switch device to transmit communications via the first link provided by the first port based on the first port identifier relative to a second port identifier that is based on the secondary port priority assigned to the second port, and block communications via the second link provided by the second port based on the second port identifier relative to the first port identifier.
8. The IHS of claim 7 , wherein the automatically assigning the first port with the primary port priority includes automatically adding the first port to a queue and automatically associating the first port with the primary port priority in the queue in response to receiving the first communication, and wherein the automatically assigning the second port with the secondary port priority includes automatically adding the second port to the queue and automatically associating the second port with the secondary port priority in the queue in response to receiving the second communication.
9. The IHS of claim 7 , wherein the STP link selection engine is configured to:
determine that the first link provided by the first port is unavailable and, in response:
automatically unassign the primary port priority from the first port;
automatically unassign the secondary port priority from the second port; and
automatically assign the second port the primary port priority.
10. The IHS of claim 9 , wherein the STP link selection engine is configured to:
automatically associate, in response to receiving the first communication, the first port with a primary position in a link identification order; and
automatically associate, in response to receiving the second communication, the second port with a secondary position in the link identification order that is different than the primary position, wherein the automatic unassigning of the secondary port priority from the second port and the automatic assigning of the primary port priority to the second port is performed based on the secondary position of the second port in the link identification order.
11. The IHS of claim 7 , wherein the STP link selection engine is configured to:
receive, from a third port and subsequent to receiving the first communication from the first port, a third communication that indicates that a third link provided to the non-designated switch device via the third port is available, wherein the third port is automatically assigned tertiary port priority that is different than the primary port priority and that causes the non-designated switch device to block communications via the third link provided by the third port based on a third port identifier that is based on the tertiary port priority assigned to the third port relative to the first port identifier.
12. The IHS of claim 7 , wherein the secondary port priority is a default STP port priority value, and wherein the primary port priority is an STP port priority value that is less than the default STP port priority value.
13. The IHS of claim 7 , wherein the first port is associated with a first port identifier value, and wherein the second port is associated with a second port identifier value that is less than the first port identifier value.
14. A method for selecting Spanning Tree Protocol links, comprising:
receiving, by a designated switch device from a first port on the designated switch device, a first communication that indicates that a first link provided to a non-designated switch device via the first port is available;
automatically assigning, by the designated switch device in response to receiving the first communication, the first port with a primary port priority;
receiving, by the designated switch device from a second port and subsequent to receiving the first communication from the first port, a second communication that indicates that a second link provided to the non-designated switch device via the second port is available, wherein the second port is automatically assigned a secondary port priority that is different than the primary port priority;
identify, by the designated switch device to the non-designated switch device, a first port identifier that is based on the primary port priority assigned to the first port in order to cause the non-designated switch device to transmit communications via the first link provided by the first port based on the first port identifier relative to a second port identifier that is based on the secondary port priority assigned to the second port, and block communications via the second link provided by the second port based on the second port identifier relative to the first port identifier.
15. The method of claim 14 , wherein the automatically assigning the first port with the primary port priority includes automatically adding the first port to a queue and automatically associating the first port with the primary port priority in the queue in response to receiving the first communication, and wherein the automatically assigning the second port with the secondary port priority includes automatically adding the second port to the queue and automatically associating the second port with the secondary port priority in the queue in response to receiving the second communication.
16. The method of claim 14 , further comprising:
determining, by the designated switch device that the first link provided by the first port is unavailable and, in response:
automatically unassign the primary port priority from the first port;
automatically unassign the secondary port priority from the second port; and
automatically assign the second port the primary port priority.
17. The method of claim 16 , further comprising:
automatically associating, by the designated switch device in response to receiving the first communication, the first port with a primary position in a link identification order; and
automatically associating, by the designated switch device in response to receiving the second communication, the second port with a secondary position in the link identification order that is different than the primary position, wherein the automatic unassigning of the secondary port priority from the second port and the automatic assigning of the primary port priority to the second port is performed based on the secondary position of the second port in the link identification order.
18. The method of claim 14 , further comprising:
receiving, by the designated switch device from a third port and subsequent to receiving the first communication from the first port, a third communication that indicates that a third link provided to the non-designated switch device via the third port is available, wherein the third port is automatically assigned a tertiary port priority that is different than the primary port priority and that causes the non-designated switch device to block communications via the third link provided by the third port based on a third port identifier that is based on the tertiary port priority assigned to the third port relative to the first port identifier.
19. The method of claim 14 , wherein the secondary port priority is a default STP port priority value, and wherein the primary port priority is an STP port priority value that is less than the default STP port priority value.
20. The method of claim 14 , wherein the first port is associated with a first port identifier value, and wherein the second port is associated with a second port identifier value that is less than the first port identifier value.