VMware, Inc.
LOAD BALANCING OF L2VPN TRAFFIC OVER MULTIPLE IPSEC VPN TUNNELS

Abstract:

In an embodiment, a computer-implemented method provides mechanisms for load balancing of L2VPN traffic over multiple IPsec VPN tunnels. In an embodiment, a method comprises: performing, by a gateway, a lookup of available virtual tunnel interfaces ("VTIs") implemented in the gateway to determine a plurality of VTIs; generating a hash value from contents of one or more inner headers of the packet; based on the hash value, determining a VTI device identifier; wherein the VTI device identifier uniquely identifies a particular VTI from the plurality of VTIs; and relaying the packet on a gateway output port that is associated with the particular VTI to allow forwarding of the packet via a particular IPsec VPN tunnel of a plurality of IPsec VPN tunnels.