| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
I have a question regarding a HUB900 configuration we are trying to
put in place here at REO.
We have the following configuration :-
COMP Room.
HUB900 (V3.0.0)
------
Slot 8: DB900MX -----> FDDI Port 1A connected to REO FDDI Ring
Slot 7: P/PROBE90
Slot 6: DR90FS (not connections) Office.
Slot 5: empty
Slot 4: empty HUB900
Slot 3: empty --------
Slot 2: empty
Slot 1: DR900FP DR900FP : Slot 8
1 -------------------------------------- 2
2 -------------------------------------- 1
3 -------------------------------------- 4
4 -------------------------------------- 3
empty : Slot 7
empty : Slot 6
empty : Slot 5
empty : Slot 4
DR900TM : Slot 3
DS900TM : Slot 2
DR900TM : Slot 1
We are seeing thousands of Receive Errors on the DS900TM in the
office hub and response is slow connecting to any service. However the
DS900TM has booted although it took ages and the response from TSM
using it is very slow. There are also some user buffer unavailable
errors as well but only into the low hundreds. We have tried the
server in a test Hub on another part of the LAN and although some
user buffer errors continue the receive failures stop.
If we connect a DS700 to either one of the DR900TMs in the office
hub, the server won't load and we don't see any load request. We have
tried both sets of fibre cables to various sets of ports of the 900FPs
at both ends but with the same results.
Management at the HUB backplane/configuration level seems correct,
and we have tried various configurations and moving modules but this
hasn't fixed things.
This is surely and valid configuration, so any ideas what we have
cocked up on. I will gladly post any more info as required.
Thanks,
Giles.
REO Networks Group.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1644.1 | Some questions. | CGOS01::DMARLOWE | Have you been HUBbed lately? | Tue Nov 01 1994 15:40 | 18 |
If you take the DECserver 900 from the office hub and plug it into
the computer room hub and configure both legs to a separate IMB,
does the server load and run properly?
Have the 900FP fiber ports been configured for redundant operation?
How are the IMB's been configured in both hubs?
> We are seeing thousands of Receive Errors on the DS900TM in the
> office hub and response is slow connecting to any service. However the
> DS900TM has booted although it took ages and the response from TSM
> using it is very slow. There are also some user buffer unavailable
Sounds like a secondary path is somehow running. Do the LED's on
the 900FP ports glow fairly solidly or do they blink only a little?
dave
| |||||
| 1644.2 | Faulty DECrepeater 900TM was the cause | RDGENG::GREID | Bang that head that doesn't Bang ! | Wed Nov 02 1994 09:43 | 11 |
The problem turned out to be a DECrepeater 900TM in the office hub
generating all the recieve errors that the DECserver 900TM was seeing.
Once removed the errors stopped and the fibre connectivity works as
does loading a DECserver 700 from either Hub. Performance is also
back to normal.
The faulty repeater is on P1 from the states as yet again another
module is not in stock in sufficient quantities in the UK.
Giles.
| |||||