p>

            <p class="SectionBody">Ex : EL20005 3Com Gigabit NIC (3C2000 Family)<br>

              <b> -s 4 </b> will output : &quot;EL20&quot;.<br>

              <b>-s -4</b> will output : &quot;ily)&quot;.</p>

            <p class="SectionTitle">Performance output </p>

            <p class="SectionBody"><b>-f </b>option : activate performance output 
              (default the In/out octet as a counter).<br>
              <b>-e </b>option : in/out errors and discarded packets. -f must 