Connected: An Internet Encyclopedia
RFC 1812 - 4.2.2.4 Type of Service: RFC 791 Section 3.1
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4.2.2.4 Type of Service: RFC 791 Section 3.1
The Type-of-Service byte in the IP header is divided into three
sections: the Precedence field (high-order 3 bits), a field that is
customarily called Type of Service or TOS (next 4 bits), and a
reserved bit (the low order bit).
Rules governing the reserved bit were described in Section [4.2.2.3].
A more extensive discussion of the TOS field and its use can be found
in [ROUTE:11].
The description of the IP Precedence field is superseded by Section
[5.3.3]. RFC 795, Service Mappings, is obsolete and SHOULD NOT be
implemented.
Next: 4.2.2.5 Header Checksum: RFC 791 Section 3.1
Connected: An Internet Encyclopedia
RFC 1812 - 4.2.2.4 Type of Service: RFC 791 Section 3.1