| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2022.1 | | NETCAD::STEFANI | | Wed Apr 24 1996 12:52 | 7 |
| >>Is this module DEFEA-DA (DEC FDDI controller for eisa PC's)supporte a OBR
>>(optical bypass) ?
Yes, both DEFEA-DA (DAS EISA multimode fiber) and DEFPA-DA (DAS PCI
multimode fiber) adapters support an optional optical bypass relay.
- Larry
|
| 2022.2 | news questions | NETRIX::"carcel.alain@a1_lyoia.frmrc.mts.dec.com" | alain carcel | Thu Apr 25 1996 11:16 | 20 |
| hi,
ok,now news questions'
-is the OBR is actif when the pc is power off ?
-then the pc boot, what is the status of the OBR (active or passive)
-when the pc is only power on (no boot), what is the status of the
OBR (active or passive)
-where is the pointer for the OBR documentation
ps:Passive=no loop , active=loop
alain
[Posted by WWW Notes gateway]
|
| 2022.3 | | NETCAD::STEFANI | | Thu Apr 25 1996 12:28 | 8 |
| >>-where is the pointer for the OBR documentation
There's not much documentation for OBR's. Digital doesn't make one,
but you can order them from companies like AMP. We do document the
pinouts for our OBR connector. That documentation is included in the
DEFEA and DEFPA owner's manuals.
/l
|
| 2022.4 | some pictures | NETCAD::ROLKE | Tune in, turn on, fail over | Thu Apr 25 1996 15:41 | 45 |
| Hello Alain,
I'll take a stab at answering your questions.
-is the OBR is actif when the pc is power off ?
The OBR is in "deinsert" state when power is off:
+--------+ +--------+
| Your | | OBR |
| Node | | |
| ############ ######## Network upstream
| | | # # |
| ############ ######## Network downstream
| | | |
+--------+ +--------+
In deinsert state your node talks to itself and the network
doesn't see your node at all (except for power loss).
-then the pc boot, what is the status of the OBR (active or passive)
-when the pc is only power on (no boot), what is the status of the
OBR (active or passive)
The OBR will remain in deinsert state until a device driver initializes
the FDDI adapter and transitions it to operational state. Only then
will the adapter put the OBR into "insert state:
+--------+ +--------+
| Your | | OBR |
| Node | | |
| ######################## Network upstream
| | | |
| ######################## Network downstream
| | | |
+--------+ +--------+
In insert state the OBR connects you to the network like a normal
connection.
See other notes within the last six months that describe having the OBR
connected when you turn Your Node on.
Chuck
|
| 2022.5 | thanks | NETRIX::"carcel.alain@a1_lyoisa.frmrc.mts.dec.com" | alain carcel | Fri Apr 26 1996 10:23 | 7 |
| Hello larry and chuck
Thanks your help
alain
[Posted by WWW Notes gateway]
|