October 2002
Intermediate to advanced
344 pages
10h 17m
English
Content preview from The ABCs of TCP/IP, 2nd Edition
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Appendix B
Internet Protocol (IP)
Protocol Type Field Values
In the Internet Protocol Version 4 (IPv4), an 8-bit Protocol field is used to
identify the next level protocol. The purpose of this appendix is to provide
a comprehensive reference to IP Protocol Type field values. If one is moni-
toring the flow of datagrams, one can use the information contained in this
appendix to facilitate obtaining an understanding of the flow of information.
For example, if a monitor program does not provide a full decode capability
it might simply indicate the value of the IP Protocol Type field, such as
“protocol type = 50.” From this appendix, one would note that ...
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