I am confused with this concept --'priority', in STP , there are 'root priority' , 'root cost'-- in BPDU message, 'port priority', 'port cost' -- which can be configured by set command ,do they have relationship in value ??? _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]