VIRTUAL EXTENSIBLE LAN TUNNEL KEEPALIVES

摘要

One embodiment of the present invention provides a switch that is a member of a fabric switch. The switch includes a keepalive response module that identifies a keepalive response packet that does not correspond to any keepalive packet previously transmitted by the switch. The switch also includes a switch identifier extraction module that extracts a switch identifier from a payload of the keepalive response packet, where the switch identifier corresponds to another member switch in the fabric switch. The switch further includes a forwarding module that constructs a packet that includes the payload and is destined to the other member switch.

主权项

1. A switch, comprising:
one or more ports; keepalive circuitry configured to generate a keepalive message for a tunnel, wherein the keepalive message includes a switch identifier identifying the switch; keepalive response circuitry configured to decapsulate a keepalive response message encapsulated by a first encapsulation header, wherein the keepalive response message corresponds to the keepalive message, and wherein the first encapsulation header includes the switch identifier as a destination identifier and a second switch identifier of a second switch as a source identifier; and wherein the keepalive circuitry is further configured to determine that the tunnel is active based on the keepalive response message.