Errata for Tanenbaum

1. Page 82, last paragraph, "56 gigabits" should be "56,000 gigabits" or "56 terabits."

2. Page 181, Fig. 3-4 (given here in postscript) is misleading. The caption for (a) says that this is the character sequence sent by the network layer. If this was the case, a DLE should be stuffed before the DLE's at the beginning and end because they could not be framing characters. Framing characters would be appended by the data link layer, not the network layer. Note that problem 2 on page 239 uses the exact same sequence as in Fig. 3-4.

   As an aside, why is a DLE stuffed before the existing DLE and not after? :-)

3. P. 214, line 18, "advance" should be "advances."

4. P. 539, Fig. 6-32 has a error. Transmission window number 17 is correctly 8 KB, but according to the slow start algorithm the next transmission window (number 18) should be 16 KB instead of 20 KB, and transmission window number 19 should be 20 KB. After that it should continue linearly, transmission window number 20 should be 21 KB, etc.