| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 585.1 | | QUIVER::SLAWRENCE | | Tue Dec 28 1993 11:58 | 6 |
| The DECbridge 90 cannot be configured in a redundant configuration like
that; see the configuration restrictions on it.
If DR900TM is supposed to be the DECrepeater900TM, it can't be put into
a DEChub 90, it must be a DEChub 900 or a pair of DEChub ONE single
slot hubs.
|
| 585.2 | What about this revised config? | ZPOVC::DAIV01::FUNGSIONG | Digital Indonesia - Networks | Wed Dec 29 1993 04:29 | 44 |
| RE: .-1
Sorry, I meant DECrepeater 900TM should be in DEChub 900MS.
How about this revised config?
DEChub 900MS DECNIS 600
DR900TM ------ DETPM --- L602 -|
DR900TM ------ DETPM --- L602 |
| ____|
| |
| DECXM
| |
DECbridge 90 ------------- |
DEChub 90 #1 AUI |
| |
| ThinWire #1 | ThinWire #2
| |
DECXM |
| |
DECbridge 90 |
DEChub 90 #2 --------------|
ThinWire #1 connects DEChub 90 #1 BNC backplane port to DECbridge 90
in DEChub 90#2; ThinWire #2 connects DEChub 90 #2 BNC backplane port
to LANcontroller 602 in DECNIS 600. I have calculated the total
number of PCs in the workgroup side will be less than 200.
I need the DECbridge 90s to manage the repeaters in DEChub 90s.
(1) Will this config be o.k., now?
(2) Which UTP cable should I use for DECrepeater 900TM to
DECNIS LANcontroller 602 connection? Is it straight
or crossed?
Thanks for your reply!
Regards,
Fung Siong
P.S.: Merry X-mas and Happy New Year!
|
| 585.3 | | QUIVER::SLAWRENCE | | Wed Dec 29 1993 12:56 | 7 |
| Regardless of how you connect them, the configuration you show has the
two bridges set up such that they could reconfigure and make the
connection between them the backbone. Not allowed.
How far apart are the two DEChub 90's? If they are together then make
them into a single 16 slot hub and just one bridge can manage all
repeaters in both.
|
| 585.4 | Works for me. | CGOS01::DMARLOWE | dsk dsk dsk (tsk tsk tsk) | Wed Dec 29 1993 15:01 | 23 |
| re. 1 & .3
>> The DECbridge 90 cannot be configured in a redundant configuration like
>> that; see the configuration restrictions on it.
>> Regardless of how you connect them, the configuration you show has the
>> two bridges set up such that they could reconfigure and make the
>> connection between them the backbone. Not allowed.
See note 34.1 in this conference as it contains a section, from Jeff
Lomicka (DB90 engineer), about dual bridges in one hub and dual
hubs each with a single bridge.
Assuming the DECNIS is set for bridging and therefore spanning tree is
active then your dual hub each with its own DB90 is VALID given
that you follow the caveats. You could also connect the management
cable between the hubs and get repeater management redundancy although
for simplicity you may want to leave this cable off. Because if
one bridge fails then it will take several minutes for the other
bridge to become bus master eventhough spanning tree will switch
over in 20-30 seconds.
dave
|