Automatic route reflector configuration system

1. An automatic route reflector configuration system, comprising:

a plurality of router devices that are coupled to each other in an autonomous system, wherein each of the plurality of router devices is configured to:

exchange discovery communications with each of the other router devices;

generate, using information included in the discovery communications, a route reflector configuration database; and

elect, as a route reflector using its route reflector configuration database, a closest one of the plurality of router devices that is not currently elected as a route reflector; and

wherein each router device elected as a route reflector is configured to:

transmit automatic route reflector peering communications to each of the other router devices, wherein each automatic route reflector peering communication transmitted to a router device includes a role for that router device;

receive, from at least some of the router devices to which the automatic route reflector peering communications were transmitted, an acceptance of the role for that router device; and

exchange routes with each of the plurality of router devices that accepted the role for that router device that was transmitted in the automatic route reflector peering communications.

2. The system of claim 1 , wherein each of the plurality of router devices is configured to:

discover, using the discovery communications received from each of the other router devices, one or more router devices to which it is directly connected, and one or more router devices that are directly connected to each router device to which it is directly connected.

3. The system of claim 1 , wherein each of the plurality of router devices is configured, following the generation of its route reflector configuration database, to:

perform full mesh interior Border Gateway Protocol (iBGP) session formation.

4. The system of claim 1 , wherein each of the plurality of router devices is configured to:

determine that automatic route reflector configuration is enabled and, in response, use its route reflector configuration database to elect, as a route reflector, the closest one of the plurality of router devices that is not currently elected as a route reflector.

5. The system of claim 1 , wherein each router device elected as a route reflector is configured to:

determine a cluster identifier associated with that route reflector; and

provide that cluster identifier in the automatic route reflector peering communications it transmits to each of the other router devices.

6. The system of claim 1 , wherein each router device elected as a route reflector is configured to:

determine that at least some of the router devices to which the automatic route reflector peering communications were transmitted have not accepted the role for that router device and, in response, end an interior Border Gateway Protocol (iBGP) session with that at least one router device.

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 route reflector configuration engine that is configured to:

exchange discovery communications with each of a plurality of router devices;

generate, using information included in the discovery communications, a route reflector configuration database;

operate, immediately subsequent to not being elected as a route reflector in response to an election by each of the plurality of router devices and based on respective route reflector configuration databases generated by each of the plurality of router devices, as a route reflector;

transmit, while operating as the route reflector, automatic route reflector peering communications to each of the plurality of router devices, wherein each automatic route reflector peering communication transmitted to a router device includes a role for that router device;

receive, while operating as the route reflector from at least some of the plurality of router devices to which the automatic route reflector peering communications were transmitted, an acceptance of the role for that router device; and

exchange, while operating as the route reflector, routes with each of the plurality of router devices that accepted the role for that router device that was transmitted in the automatic route reflector peering communications.

8. The IHS of claim 7 , wherein the route reflector configuration engine is configured to:

discover, using the discovery communications received from each of the plurality of second router devices, one or more router devices to which it is directly connected, and one or more router devices that are directly connected to each router device to which it is directly connected.

9. The IHS of claim 7 , wherein the route reflector configuration engine is configured, following the generation of the route reflector configuration database, to:

perform full mesh interior Border Gateway Protocol (iBGP) session formation.

10. The IHS of claim 7 , wherein the route reflector configuration engine is configured to:

determine that automatic route reflector configuration is enabled and, in response, operate, immediately subsequent to not being elected as a route reflector in response to an election by each of the plurality of router devices and based on the respective route reflector configuration databases generated by each of the plurality of router devices, as a route reflector.

11. The IHS of claim 7 , wherein the route reflector configuration engine is configured to:

determine a cluster identifier associated with the operation as a route reflector; and

provide that cluster identifier in the automatic route reflector peering communications transmitted to each of the plurality of router devices.

12. The IHS of claim 7 , wherein the route reflector configuration engine is configured to:

determine that at least some of the router devices to which the automatic route reflector peering communications were transmitted have not accepted the role for that router device and, in response, end an interior Border Gateway Protocol (iBGP) session with that at least one router device.

13. The IHS of claim 7 , wherein the route reflector configuration engine is configured to:

periodically flood the automatic route reflector peering communications to each of the plurality of router devices.

14. A method for automatically configuring route reflectors, comprising:

exchanging, by a first router device, discovery communications with each of a plurality of second router devices;

generating, by the first router device using information included in the discovery communications, a route reflector configuration database;

operating, by the first router device immediately subsequent to not being elected as a route reflector in response to an election by each of the plurality of second router devices and based on respective route reflector configuration databases generated by each of the plurality of second router devices, as a route reflector;

transmitting, by the first router device while operating as the route reflector; automatic route reflector peering communications to each of the plurality of second router devices, wherein each automatic route reflector peering communication transmitted to a second router device includes a role for that second router device;

receiving, by the first router device while operating as the route reflector from at least some of the plurality of second router devices to which the automatic route reflector peering communications were transmitted, an acceptance of the role for that second router device; and

exchanging, by the first router device while operating as the route reflector, routes with each of the plurality of second router devices that accepted the role for that second router device that was transmitted in the automatic route reflector peering communications.

15. The method of claim 14 , further comprising:

discovering, by the first router device using the discovery communications received from each of the plurality of second router devices, one or more second router devices to which it is directly connected, and one or more second router devices that are directly connected to each second router device to which it is directly connected.

16. The method of claim 14 , further comprising:

performing, by the first router device following the generation of the route reflector configuration database, full mesh interior Border Gateway Protocol (iBGP) session formation.

17. The method of claim 14 , further comprising:

determining, by the first router device, that automatic route reflector configuration is enabled and, in response, operating, immediately subsequent to not being elected as a route reflector in response to an election by each of the plurality of router devices and based on respective route reflector configuration databases generated by each of the plurality of router devices, as a route reflector.

18. The method of claim 14 , further comprising:

determining, by the first router device, a cluster identifier associated with the operation as a route reflector; and

providing, by the first router device, that cluster identifier in the automatic route reflector peering communications transmitted to each of the plurality of second router devices.

19. The method of claim 14 , further comprising:

determining, by the first router device, that at least some of the second router devices to which the automatic route reflector peering communications were transmitted have not accepted the role for that second router device and, in response, end an interior Border Gateway Protocol (iBGP) session with that at least one second router device.

20. The method of claim 14 , further comprising:

periodically flooding, by the first router device, the automatic route reflector peering communications to each of the plurality of second router devices.