STP root port selection is based on port priority which, by default, is based upon the interface speed. If they're equal I believe the lowest port address wins. http://www.hojmark.net/stp-port-cost.html You're talking switches right? Why post to a bridge list? You'd be better off at http://www.tek-tips.com/threadminder.cfm?pid=558 -Jeff -----Original Message----- From: bridge-bounces@xxxxxxxxxxxxxx [mailto:bridge-bounces@xxxxxxxxxxxxxx] On Behalf Of sameer Sent: Thursday, August 04, 2005 4:39 AM To: bridge@xxxxxxxxxxxxxx Subject: [Bridge] Election of root port Hi, I have a situation where in there are 2 switches A and B. port 0 of A is connected to port 0 of B port 1 of A is connected to port 1 of B all the four ports are in auto negotiation and 100mbps Last byte of MAC of A = 7F Last byte of MAC of B = 7E (remaining bytes of the MAC address are identical) Considering the switch B will be elected as root bridge which port of switch A will be root port. Will this configuration work perpetually? _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxx https://lists.osdl.org/mailman/listinfo/bridge