[Bridge] Network with some switches without STP/RSTP support

Ross Vandegrift ross at kallisti.us
Fri Jan 9 16:27:27 PST 2009

On Fri, Jan 09, 2009 at 11:01:19PM +0100, Antonio Di Bacco wrote:
> Does the RSTP will manage to resolve the loop (open the ring)? Will I manage
> to reach anyway the PC?

Probably yes, but the answer could be no.  All the non-STP switches I've
ever seen do forward BPDUs.

Strictly speaking, 802.1D bridges should never forward frames addressed
to the reserved bridge management MAC addresses.  This would lead both
B & C to believe they were connected to an edge port, which will never

Ross Vandegrift
ross at kallisti.us

"If the fight gets hot, the songs get hotter.  If the going gets tough,
the songs get tougher."
	--Woody Guthrie

More information about the Bridge mailing list