I have a array of switches connected to an Openflow controller.I want to understand the topology of the switches.I am thinking of using LLDP for this.Now in this architecture if a link goes down or a switch stop functioning is there some mechanism for failure discovery? What I guess I am basically asking is are there some mechanism for failure discovery in LLDP.? I had a look at the wikipedia page and I couldn't find much on it.Any help is appreciated.
SnapOverflow
LLDP isn't designed for failure discovery - it's a standards compatible way of doing topology discovery. If you're looking to do failure discovery, you probably want something like BFD (if you're using routing between the ports), or the failure detection built into ethernet auto negotiation (if you're not).