Amazon.com just posted my 5 star review of Network Maintenance and Troubleshooting Guide, 2nd Ed by Neal Allen. From the review:
Good network troubleshooting books are rare. TCP/IP Analysis and Troubleshooting Toolkit by Kevin Burns (2003), Troubleshooting Campus Networks by Priscilla Oppenheimer and Joseph Bardwell (2002), and Network Analysis and Troubleshooting by Scott Haugdahl (1999) come to mind. Network Maintenance and Troubleshooting Guide (NMATG) brings a whole new dimension to network analysis, particularly at the lowest levels of the OSI model. I found topics covered in NMATG that were never discussed in other books. While not for every networking person, NMATG is a singular reference that belongs on a network professional's shelf.