According to cisco doc's, the spanning tree tree algortihm specifies a priority field which defaults to 32,768. When switches power up they assume they are the bridge root and advertise this value in BPDU's across the network to elect a root "bridge". Since they all have same priority by default, the election is then decided by lowest MAC address of the tied switches. As a matter of fact, cisco uses the lowest MAC address tie-breaker in other algorithms as well. This seems simple enough to understand. I'd like to know is when they manufatcure switches do they burn in a lower MAC addresses in their core and distribution switched than in their access layer switches. Otherwise, access layer switches might be elected as root bridges during the election which would not be optimal. Can anyone give some insight on this? p.s. Excuse me for any grammar or punctuation errors, as I am a product of N.J. Public Schools..... Sam Sneed Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=17449&t=17449 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
