Minor correction to my previous statement:
INCORRECT
Provided there is no topology change that would result in the logic taking the port back to DISABLEDProvided there is no topology change that would result in the logic taking the port back to BLOCKING
On Mon, Apr 14, 2014 at 7:18 PM, Chris Healy <cphealy@xxxxxxxxx> wrote:
1) The initial state of a port if it is running STP is disabled. Once there is link, it will transition to blocking. After that point, depending on the state of the rest of the network, it will either stay blocking or attempt to transition to forwarding.
2) If a port state is in learning, that means that the bridge has determined that it is OK for the port to go to forwarding, but it has not been in the learning state for a long enough period of time. (learning is a transitionary time period in the STP when a port will learn mac addresses but will not forward traffic.) Provided there is no topology change that would result in the logic taking the port back to disabled, the local port state should go from learning to forwarding after 1x the forward delay. (This assumes the link does not go down, in which case the port state will go to disabled.)
Hope that helps,
ChrisOn Mon, Apr 14, 2014 at 7:08 PM, longguang.yue <kernelluck@xxxxxxx> wrote:
hi,all1.if the initial state of port is learning?2.in what case, state trandfers from learing to forwarding, what is the condition?thanks
