RFC 2467 (rfc2467) - Page 2 of 9
Transmission of IPv6 Packets over FDDI Networks
Alternative Format: Original Text Document
RFC 2467 IPv6 over FDDI December 1998
which specifies a smaller MTU, or by manual configuration of each
node. If a Router Advertisement received on an FDDI interface has an
MTU option specifying an MTU larger than 4352, or larger than a
manually configured value, that MTU option may be logged to system
management but must be otherwise ignored.
For purposes of this document, information received from DHCP is
considered "manually configured" and the term FDDI includes CDDI.
3. Frame Format
FDDI provides both synchronous and asynchronous transmission, with
the latter class further subdivided by the use of restricted and
unrestricted tokens. Only asynchronous transmission with
unrestricted tokens is required for FDDI interoperability.
Accordingly, IPv6 packets shall be sent in asynchronous frames using
unrestricted tokens. The robustness principle dictates that nodes
should be able to receive synchronous frames and asynchronous frames
sent using restricted tokens.
IPv6 packets are transmitted in LLC/SNAP frames, using long-format
(48 bit) addresses. The data field contains the IPv6 header and
payload and is followed by the FDDI Frame Check Sequence, Ending
Delimiter, and Frame Status symbols.
Crawford Standards Track