4 Replies Latest reply on May 14, 2010 2:49 PM by GeorgeK

    Bandwidth utilization for physical interface vs. subinterface

    Steve Pfister

      In looking at the bandwidth utilization for our upstream boarder router, we're noticing something strange. The connection to our upstream provider is a fiber Gigabit interface which has 2 subinterfaces for our 2 BGP peers (Internet and Internet2). We have all three interfaces added to our NPM 9.51.  It looks like the the Internet subinterface is usually about 5 or 6 Mbps higher in utilization than the main interfaces. I would have thought if there was a difference, it would be the other way around. Does anyone know why this is? Is this an Orion thing or a Cisco thing?