| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 500.1 | | MIPSBX::thomas | The Code Warrior | Mon Mar 16 1992 10:34 | 30 |
| > 1. What is the max input data rate the workstation will sustain using
> FDDI with TCP/IP and UDP/IP?
Depends on the application and how CPU you want left to do real work.
> 2. What configuration are available? SAS/DAS? (FDDIc 700 is SAS, DC500
> is DAS, right?)
The DEFZA is SAS only.
> 3. Is the workstation a claiming station? That is does it participate
> in network initialization? (We do this only in the DC500, right?)
I'll punt on this one.
> 4. Is the TTRT (target token rotation time) programmable?
Yes (on OSF/1, no on ULTRIX V4.2A or earlier, maybe on next ULTRIX release)
> 5. Is the synchronous transmission time slice programmable?
No. The OSF/1 environment on provides support for async LLC frames.
> 6. Does the workstation support asynchronous FDDI transmission?
Yes.
> 7. How much data buffering is provided by TCP and UDP?
Upto 64KB-1 per endpoint, default is 16KB per endpoint.
|
| 500.2 | | KONING::KONING | Paul Koning, NI1D | Mon Mar 16 1992 11:18 | 8 |
| (3) ALL FDDI stations participate in Claim; the standard requires that.
(Don't confuse FDDI with 802.5, which has specialized "monitor" stations;
FDDI has nothing in common with 802.5.)
(5) Note that IP does not use synch service (RFC 1188 says so explicitly).
For that matter, neither does any other standard protocol I know of.
paul
|
| 500.3 | but it's closer than Ethernet... | NAC::GULICK | Those dirty rings !! | Tue Mar 24 1992 13:14 | 14 |
| re. -1
<<< Note 500.2 by KONING::KONING "Paul Koning, NI1D" >>>
<<(3) ALL FDDI stations participate in Claim; the standard requires that.
<< (Don't confuse FDDI with 802.5, which has specialized "monitor" stations;
<< FDDI has nothing in common with 802.5.)
just to keep you honest Paul, all 802.5 stations are capable of being
monitor stations and therefor will participate in the 802.5-version
of Claim Token aka monitor contention
"nothing in common" is a little too strong...
-tom
|
| 500.4 | | KONING::KONING | Paul Koning, NI1D | Tue Mar 24 1992 22:14 | 9 |
| Oh, ok.
To be fair, FDDI does have two things in common with 802.5:
"token" and "ring".
but that's all.
paul
|
| 500.5 | System for Benching? | HXOU01::RUBINGER | Midvale School for the Gifted | Mon Apr 13 1992 14:25 | 15 |
| Thanks to all who responded. I have forwarded the info to the
customer. They are, however, still insisting on some form of
throughput measurement.
The customer has a "benchmark" that they claim measures IP network
throughput. They would like to run it on DECstation 5000/240s
connected via FDDI, doing nothing else to see what the upper limit on
throughput could be.
Is there anyone out there with a config similar to the above that would
be willing to run the customer's code?
Thanks and regards,
John Rubinger
|