RFC 877 (rfc877) - Page 2 of 2

Standard for the transmission of IP datagrams over public data networks

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RFC 877                                                   September 1983
Transmission of IP Datagrams Over Public Data Networks


2.2 Features of X.25 not discussed in this document are not used.
    For example, interrupt packets and the D bit (indicating
    end-to-end significance) are not used.

2.3 Negotiable features (facilities) of X.25 are allowed. For
    example, sites are free to negotiate larger packet and window
    sizes.

2.4 Some sites, such as CSNET sites, may attempt to open multiple
    virtual circuits to a single site. Sites should attempt to
    handle such incoming calls gracefully: transmit on the
    additional circuits if possible and accept incoming datagrams
    from them, but do not accept the CALL REQUEST, only to
    immediately close the connection or ignore datagrams
    transmitted on such circuits.


REFERENCE

[1] Comer, D.E. and Korb, J.T., "CSNET Protocol Software: The
    IP-to-X.25 Interface", SIGCOMM Symposium on Communications
    Architectures and Protocols, March 1983.




























Korb

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