Patent ID: 9325525
Filing Date: 2016-04-26
CPC Classification: H04L

Claim Text:
1. A method for supporting multiple virtual LANs (VLANs) via a single tunnel between intermediary devices, the method comprising: (a) adding, by a second intermediary device of a second data center on a second network, on untagged VLAN network traffic for a first VLAN on a first network interface of the second intermediary device, a VLAN tag including VLAN information identifying the first VLAN network based on the first network interface on which the untagged VLAN network traffic was received; (b) encapsulating the tagged network traffic; (c) transmitting the tagged network traffic via a tunnel established between the first intermediary device and the second intermediary device to a first intermediary device; (d) receiving, by the first intermediary device of a first data center on a first network from the second intermediary device of the second data center on the second network, an encapsulated packet of the tagged network traffic via the tunnel, the first intermediary device comprising a plurality of network interfaces, each network interface of the plurality of network interfaces interfacing to a corresponding virtual LAN (VLAN) network of a plurality of VLAN networks; (e) detecting, by the first intermediary device, that the encapsulated packet has been tagged with the virtual LAN (VLAN) information by the second intermediary device; (f) identifying, by the first intermediary device from the VLAN information included in the VLAN tag added by the second intermediary device, the first VLAN network of the plurality of VLAN networks; and (g) transmitting, by the first intermediary device, a packet of the encapsulated packet via the network interface of the first intermediary device corresponding to the identified first VLAN network.