Chapter 20 Classifier
Table 48 Common Ethernet Types and Protocol Numbers
ETHERNET TYPE | PROTOCOL NUMBER |
NBS Internet | 0802 |
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ECMA Internet | 0803 |
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Chaosnet | 0804 |
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X.25 Level 3 | 0805 |
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XNS Compat | 0807 |
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Banyan Systems | 0BAD |
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BBN Simnet | 5208 |
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IBM SNA | 80D5 |
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AppleTalk AARP | 80F3 |
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In the Internet Protocol there is a field, called “Protocol”, to identify the next level protocol. The following table shows some common protocol types and the corresponding protocol number. Refer to http://www.iana.org/assignments/
Table 49 Common IP Protocol Types and Protocol Numbers
PROTOCOL TYPE | PROTOCOL NUMBER |
ICMP | 1 |
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TCP | 6 |
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UDP | 17 |
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EGP | 8 |
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L2TP | 115 |
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Some of the most common TCP and UDP port numbers are:
Table 50 Common TCP and UDP Port Numbers
PROTOCOL NAME | TCP/UDP PORT NUMBER |
FTP | 21 |
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Telnet | 23 |
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SMTP | 25 |
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DNS | 53 |
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HTTP | 80 |
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POP3 | 110 |
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See Appendix B on page 345 for information on commonly used port numbers.
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