Patent ID: 9674079
Date: 2017-06-06
CPC Classifications: H04L,H04W

Claim:
1. A method, comprising: providing a plurality of first connections, each first connection of the plurality of first connections coupling a first distribution node of a first site to a respective access device of a plurality of access devices of the first site, each access device coupled to one or more hosts of the first site; configuring a second connection between the first distribution node and a first edge router to not forward traffic associated with a first set of one or more virtual local area networks (VLANs); determining, by a semaphore communicated with a second distribution node over the second connection, a third connection connecting the first edge router and a second edge router, and a fourth connection connecting the second edge router to the second distribution node, whether the second distribution node is reachable from the first distribution node through the first edge router and the second edge router, the second distribution node configured to forward traffic associated with the first set of one or more VLANs across the fourth connection to the second edge router while the first distribution node forwards traffic associated with a second set of one or more VLANs across the second connection to the first edge router; configuring the second connection to forward traffic associated with the first set of one or more VLANs in response to a determination that the second distribution node is unreachable through the first edge router and the second edge router; and forwarding traffic associated with the first set of one or more VLANs across the second connection to the first edge router.