Dynamic wide area network packet routing

A method comprising:

• receiving by a source router, from a destination router, a notification of a first local route segment for routing packets sent from one or more source devices locally associated with the source router to a destination device locally associated with the destination router through a first network, to which the first local route segment is coupled, the first network and the first local route segment to be preferred over a second network and a second local route segment the source router is initially configured for routing packets sent from the one or more source devices locally associated with the source router to the destination device locally associated with the destination router, the first and second networks being different networks, and the destination router being enabled to receive routed packets from both the first and second networks;
• additionally updating a source routing table with the first local route segment as a preferred route segment over the second local route segment, as a result of the notification,
• receiving by the source router a first packet from a source device locally associated with the source router, destined for the destination device locally associated with the destination router;
• routing the first packet to the destination device locally associated with the destination router using the first network and the first local route segment instead of the second network and the second local route segment;
• and
• on failure to receive acknowledgment of receipt of the first packet from the destination device locally associated with the destination router using the first network and the first local route segment consistent with a selected transmission throughput, routing the first packet to the destination device locally associated with the destination router using the second network and the second local route segment notwithstanding the additional update.

An article of manufacture comprising:

• a storage medium;
• and
• one of a first programming instructions, a second programming instructions, or both the first and second programming instructions stored in the storage medium;
• wherein the first programming instructions, when executed by a processor, program a destination router to enable the destination router to create a first local route segment, in addition to a second local route segment, for routing packets to a destination device locally coupled with the destination router, the first and second local route segments to route packets received from a first and a second network to the destination device respectively, the first and second networks being different networks, and to notify a source router of the first local route segment through a communication connection communicatively connecting the routers through the first network to additionally update the source router to enable the source router to route packets from one or more source devices locally coupled with the source router, destined for the destination device, through the first network, the source router being initially configured to route packets from the one or more source devices destined for the destination device through the second network;
• and
• wherein the second programming instructions, when executed by a processor, program a third router to enable the third router (a) to receive from a fourth router, a notification of a third local route segment for routing packets from devices locally associated with the third router to a device locally associated with the fourth router through a third network, to which the third local route segment is coupled, the third network and the third local route segment to be preferred over a fourth network and a fourth local route segment for routing packets from the devices locally associated with the third router to the device locally associated with the fourth router, the third and fourth networks being different networks, (b) additionally update the third router to include the third local route segment and the third network for routing packets from devices locally associated with the third router to a device locally associated with the third router, the third router being initially configured to route packets from devices locally associated with the third router to a device locally associated with the third router using the fourth local route segment and the fourth network, and (c) to receive by the third router a second packet from a device locally associated with the third router, destined for a device locally associated with the fourth router, to route the second packet to the device locally associated with the fourth router using the third network and the third local route segment;
• and on failure to route the second packet to the device locally associated with the fourth router using the third network and the third local route segment, routing the second packet to the device locally associated with the fourth router using the fourth network and the fourth local route segment.

A system comprising:

• a destination router having
• at least one light source;
• a first and a second networking interface to couple the destination router to a first and a second network respectively, the first and second networks being different networks;
• a first routing module coupled to the first and second networking interfaces, and configured to create a first local route segment, in addition to a second local route segment, for routing packets to a destination device locally coupled with the destination router, the first and second local route segments to route packets received from the first and second networks to the destination device respectively, to notify a source router of the first local route segment through a communication connection communicatively connecting the destination and source routers through the first network to enable the source router to route packets from one or more source devices locally coupled with the source router, destined for the destination device, through the first network, and to control the at least one light source, the source router being initially configured to route packets to the destination device from one or more source devices locally coupled to the source router through the second local route segment and the second network, and the source router, in response to the notification, additionally update the source router to preferentially route packets to the destination device from one or more source devices locally coupled to the source router through the first local route segment and the first network.