[Ns-developers] Checksums (UDP) in ns3
manuel.requena at cttc.es
Wed Aug 29 10:41:13 PDT 2007
> Unfortunately, I can't find similar words in the TCP RFC about
> the TCP checksum. Will continue to research this from the standpoint
> of TCP.
Apart from the basic ones, there are other interesting RFCs for this kind of issues:
- RFC-1122 Requirements for Internet Hosts - Communication Layers. R.
Braden, Ed.. October 1989. (Format: TXT=295992 bytes) (Updated by
RFC1349, RFC4379) (Also STD0003) (Status: STANDARD)
- RFC-1812 Requirements for IP Version 4 Routers. F. Baker, Ed.. June 1995.
(Format: TXT=415740 bytes) (Obsoletes RFC1716, RFC1009) (Updated by
RFC2644) (Status: PROPOSED STANDARD)
About TCP checksum, the RFC-1122 says:
220.127.116.11 TCP Checksum: RFC-793 Section 3.1
Unlike the UDP checksum (see Section 18.104.22.168), the TCP
checksum is never optional. The sender MUST generate it and
the receiver MUST check it.
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