[rprsg] IEEE Documents

[Bob Sultan <Bob.Sultan@xxxxxxxxxxxxxxx>]

Thank you IEEE for making the 802 standards freely available in .pdf! 
Previously they were available to me as images and I could neither search
nor copy.  I found lots of interesting stuff here.  802.5 appears
to use the term 'repeat' for 'transit'.  They say they use the term
'transmit' when the station 'generates' the frame (as in host transmit),
but in the document they seem to use the term also to mean the act of placing
the frame on the medium (including the transit or repeat case).  The
document that surprised me was 802.5c.  I've been living under a rock
and wasn't aware that token ring was extended to include dual ring configurations. 
They use the term wrapback for wrapping, with contra-rotating rings instead
of counter-rotating rings.  There are many figures and descriptions
in the document that may be useful to us.  The DBDQ and demand priority
documents were generally less interesting, but I have included a few of
their terms also below.

Bob L. is supplying me with the IEEE Dictionary.  By next week I hope we can start stepping through the sections of the T&D draft to poll for terms on which there is agreement (probably starting Wednesday as I am out on Tuesday).

Enjoy the long weekend (for those in the U.S.), Bob

TOKEN RING ANSI/IEEE Std 802.5, 1998 Edition
http://standards.ieee.org/reading/ieee/std/lanman/802.5-1998.pdf

1.3.50 repeat: The action of receiving a bit stream (for example, frame, token, or fill) and placing it on
the medium. Stations repeating the bit stream may copy it into a buffer or modify control bits as appropriate.
Contrast with transmit.

1.3.72 transmit: The action of a station generating a frame, token, abort sequence, or fill and placing it
on the medium. Contrast with: repeat.

IEEE Std 802.5c-1991 SUPPLEMENT TO 802.5
http://standards.ieee.org/reading/ieee/std/lanman/802.5c-1991.pdf

Dual Ring. A topology (such as that shown in Fig 1-1) in which stations are
linked by link pairs and, from any one station to another, there are exactly
two distinct paths, where a path is defined as a sequence of consecutive
links in which no link pair is traversed more than once.

Wrapping.  Reconfiguration function that involves Dual Ring stations using
contra-rotating links to avoid a failed link or node.

from DQDB ACCESS METHOD AND PHYSICAL LAYER SPECIFICATIONS [ANSI/IEEE Std 802.6, 1994 Edition]
http://standards.ieee.org/reading/ieee/std/lanman/802.6-1994.pdf
1.4.68 read: The process of an access unit (AU) copying bits of a data stream as they pass on the bus.
1.4.91 write: The process of an access unit (AU) sending data downstream on a bus by logically ORing its
outgoing data with the data pattern (normally all zeros) arriving from upstream on that bus.

from DEMAND PRIORITY ACCESS METHOD [ANSI/IEEE Std 802.12, 1998 Edition]
http://standards.ieee.org/reading/ieee/std/lanman/802.12-1998.pdf

3.18 elasticity buffer: A first-in-first-out (FIFO) buffer in the network repeater that can provide temporary
storage for a message packet during retransmission delays. The buffer acts as a shift register or delay
line, and does not need to hold an entire, full-length packet. See also: store-and-forward buffer.

3.72 store-and-forward buffer: A first-in-first-out (FIFO) buffer in the network repeater that can provide
temporary storage for an entire message packet prior to retransmission. The buffer acts as a shift register
and must hold an entire, full-length packet. See also: elasticity buffer.