STP recovery on tree root failure and recovery?

Question

What happens in an STP topology if the root node fails then recovers?

After the failure I guess that the two segments elect a new root for each one. When the old root returns, does it get back as root after a while?

Call me V · Accepted Answer · 2011-01-14 15:38:17Z

up vote 1 down vote accepted

It should eventually return to the normal STP config.

answered Jan 14 '11 at 15:38

Call me V
5,0721518

	Please define "normal". Any link to a reference? – Metiu Jan 14 '11 at 15:42
	normal == the way it was before...if you understand the root bridge election process, it should just return. You might have to power cycle the new "root" to get an election to take place if your hardware doesn't support pre-empt. – Call me V Jan 14 '11 at 16:08
	cisco.com/univercd/cc/td/doc/product/rtrmgmt/sw_ntman/cwsimain/… – Call me V Jan 14 '11 at 16:21

1 Answer