Recently we've had a number of reports on this mailing list that, when a new port appears on an Open vSwitch switch, STP triggers a topology change and start dropping packets for several seconds. After thinking about this for a while, I think what's happening is that STP in OVS is treating every port as if it potentially connects to a switching element. That's correct, but it makes connecting new ports slow. It seems to me that we need to add a feature equivalent to Cisco's "portfast" (e.g. see http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4000/8-2glx/configuration/guide/stp_enha.html) if we want to support STP in a way that's really convenient for users.
Any thought? _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
