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Conference smaug::snagwy

Title:	SNA GATEWAY NOTEFILE
Notice:	Note 1.* -> kits and doc, 288.* -> obtaining product support
Moderator:	EDSCLU::GARROD

Created:	Fri Feb 07 1986
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	7116
Total number of notes:	28576

7048.0. "speed of CT ?" by ROM01::STURN (Sturn Federico @RIO) Thu Mar 20 1997 09:30

    Hi, 
    it is not clear to me which is the speed of the Domain Gateway  Channel
    Attached.
    In the release notes I find 1.3/2.6 megabits/sec but the IBM
    Bus-and-Tag has a speed of 3.0/4.5 megabytes/sec.
    Can somebody explain to me?
    
    Thanks

T.R Title User Personal
Name Date Lines

7048.1 Theory vs. Implementation FREE::CAMBRIA Still worrying about deck chairs Thu Mar 20 1997 11:18 28

T.R	Title	User	Personal Name	Date	Lines
7048.1	Theory vs. Implementation	FREE::CAMBRIA	Still worrying about deck chairs	`Thu Mar 20 1997 11:18`	28
	<<< SMAUG::EDS1$:[NOTES$LIBRARY]SNAGWY.NOTE;1 >>> -< SNA GATEWAY NOTEFILE - For INTERNAL USE ONLY >- ================================================================================ Note 7048.1 speed of CT ? 1 of 1 FREE::CAMBRIA "Still worrying about deck chairs" 22 lines 20-MAR-1997 11:16 -< Theory vs. Implementation >- -------------------------------------------------------------------------------- > <<< Note 7048.0 by ROM01::STURN "Sturn Federico @RIO" >>> > -< speed of CT ? >- > > Hi, > it is not clear to me which is the speed of the Domain Gateway Channel > Attached. > In the release notes I find 1.3/2.6 megabits/sec but the IBM > Bus-and-Tag has a speed of 3.0/4.5 megabytes/sec. > Can somebody explain to me? It's all in the implementation. The hardware (older vax) which makes up the box can only go so fast, the software adds its own overhead but 90% or more of the problem is that the Channel Board used for the CT can only go so fast. Just because Bus & Tag _can_ go to 4.5Mbytes, doesn't mean our product does. MikeC

                <<< SMAUG::EDS1$:[NOTES$LIBRARY]SNAGWY.NOTE;1 >>>
               -< SNA GATEWAY NOTEFILE - For INTERNAL USE ONLY >-
================================================================================
Note 7048.1                       speed of CT ?                           1 of 1
FREE::CAMBRIA "Still worrying about deck chairs"     22 lines  20-MAR-1997 11:16
                         -< Theory vs. Implementation >-
--------------------------------------------------------------------------------
>            <<< Note 7048.0 by ROM01::STURN "Sturn Federico @RIO" >>>
>                               -< speed of CT ? >-
>
>    Hi, 
>    it is not clear to me which is the speed of the Domain Gateway  Channel
>    Attached.
>    In the release notes I find 1.3/2.6 megabits/sec but the IBM
>    Bus-and-Tag has a speed of 3.0/4.5 megabytes/sec.
>    Can somebody explain to me?

It's all in the implementation.

The hardware (older vax) which makes up the box can only go so fast, 
the software adds its own overhead but 90% or more of the problem is 
that the Channel Board used for the CT can only go so fast.

Just because Bus & Tag _can_ go to 4.5Mbytes, doesn't mean our 
product does.  

MikeC