| 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 |
I basically want to double check my beliefs about the TVX and T_Req
parameters. If my understanding is correct, the TVX is the max. time
that can go by without getting a nonrestricted token or seeing a valid
frame. Is there a default (i think 3ms) and a max value?
Also, on the T_Req, i believe this is used for single link arbitration.
do all nodes on the ring use the same T_Req, and if so, which T_Req do
they decide to use? one last item, is there a default T_Req value?
thanks in advance.
joe
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 930.1 | KONING::KONING | Paul Koning, A-13683 | Thu Apr 15 1993 17:45 | 12 | |
You're right on TVX. There is no max; the default is more like 2.5 ms.
On T_Req, there are a number of related parameters: T_Req, T_Neg, etc.
Have you looked at the FDDI Primer discussion about this? I don't
remember exactly what it says...
Basically, T_Req is the desired value for TTRT chosen by a particular
station. Each station can have a different values. During claim, the
lowest of these values is determined (T_Neg), and that value is used as
TTRT.
paul
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