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Conference 7.286::fddi

Title:	FDDI - The Next Generation

Moderator:	NETCAD::STEFANI

Created:	Thu Apr 27 1989
Last Modified:	Thu Jun 05 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	2259
Total number of notes:	8590

846.0. "SDA ANA/LAN output for DEMFA explanation ?" by BONNET::STRATMAN (Peter Stratman @VBO) Tue Feb 02 1993 10:31

    Two questions concerning DEMFA's :

    
    Using SDA'S ANA LAN/FDDI/FULL, on a VMS V5.5-1 6530, I always see the
    upstream neighbor's address as 00-00-00-00-00-00 on the FXA FDDI
    Information screen. Is this the expected behaviour ?

    I also would like to interpret the Max token rotation time, Negotiated
    TRT and Valid transmission time. In what units are they expressed ?
    They certainly do not compare to the ms values on the DECbridge 500s.

    Thanks,
    Peter.


This is what it looks like :

...

LAN Data Structures
-------------------
		-- FXA FDDI Information  2-FEB-1993 16:24:36 --
Data link arch version      00000101    Module serial num           53413030
Max token rotation time      2162688    Module serial num           30323431
Negotiated TRT                 99840    Module serial num           38333131
Valid transmission time        32768    Upstream neighbor  00-00-00-00-00-00
LEM threshold                      8    Phy state		    7
Port type                 1456865399	Link state		    4
DAT results			   0    Ring purger state	    0

...

T.R	Title	User	Personal Name	Date	Lines
846.1	and Firmware rev; and Multicast counters?	ZUR01::HOTZ	Gregor; MCS, NaC Support, Schweiz	`Tue Feb 02 1993 11:28`	15
	And I like to know how to get the Firmware Version of the DEMFA, with SDA. The field 'Device version' is always 00000000 00000000. The DEC FDDIcontroller 400 Intallation/problem solving manual says (PAGE C-6) to examine LSB + LSB$L_MFA_DEV to get the hardware/firmware rev. What's the offset, as a number? Or even better, can we have the FXSYM.STB for VMS5.5-2? The Mcast counters on a per user basis is always 0. I needed it to verify that a boot request from an ethernet device had actually made it through the Ether- FDDI bridge. When you don't have an FDDI analyzer, you need more info from your systems. greg
846.2		KONING::KONING	Paul Koning, A-13683	`Tue Feb 02 1993 13:52`	4
	The basic time unit for TTRT and the like is 80 ns. From the looks of the numbers you showed, that's indeed the unit used in that display. paul