I know that the subinterface inherit the configuration from the main interface. But what appends when subinterface is configured and the interface is not? I'm asking this because i had one problem with one router and after many changes to the configuration it started working. I've compared the first configuration and the one running now and the only difference is: frame-relay lmi-type cisco frame-relay ip rtp header-compression in the serial interface (but these commands were always in the subinterfaces). By the way, the problem was with low bandwidth in one serial. ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]