Johnson, Allan  <br/><br/>
Switching basics and intermediate routing 
by Allan Johnson 
 - Indiana   Cisco press  2007 
 - xv, 389 pages; 27 cm. 
<br/><br/> includes appendix 
<br/><br/><label>ISBN: </label>1-58713-171-4 
<br/><br/><label>Dewey Class. No.: </label>621.3815372/J63/C1/2007