| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1766.1 | | NETCAD::HERTZBERG | History: Love it or Leave it! | Tue Dec 06 1994 18:42 | 47 |
| I'll leave the SNMP discussion to someone else, but I can take a crack
at the stack configuration.
>> How deep can I stack the 90TS?
Assuming you mean "how many DR90TS can I connect together to be on the
same LAN," the answer depends on how you connect them together.
Normally, one would connect them together using the thinwire BNC. In
this case, the rules of thinwire apply... up to 30 devices
covering no more than 185 meters total (i.e. a "string" of up to 30
of the 90TS units).
In a DH90 or DH900, the entire hub could be filled with repeaters.
This could be a "stack" of up to 8 repeaters.
>> What are the options for "stacking" the 90TS?
>> .... 90 backplane?
Yes. Also 900 backplane.
>> .... DEChub One?
Nope, the 90TS cannot make use of the DEChub One. It can stand alone
(8 TP ports plus one Thinwire BNC port) or it can operate with its AUI
rear cover, which gives you 8 TP ports plus one AUI port. In this last
configuration, EITHER the AUI port OR the thinwire port can be active
at one time... not both (they share an internal port of the repeater).
The AUI configuration is therefore not very useful in a stack since
you lose the thinwire backbone you need to connect together the devices.
>> Stand alone via front panel bezels?
The only network ports on the front bezels are TP ports. You could use
these in a small network to stack repeaters, but you eat up repeater
hops fast. There are no front panel "expansion" ports on the DETMI.
>> What happens in each of the stackable scenarios relative to repeater
>> rules? i.e., 90 backplane = 1 repeater; DEChub ONE = 1 repeater (?);
>> stacked stand alone = ? repeater(s)...
Only in the DH900 can multiple 90TS act as a single logical repeater.
They do this by connecting together using the flex channel (IMB) on the
upper, 48-pin connector.
In a configuration where the modules are connected together using
thinwire, such as DH90 or a thinwire-connected "string," there are two
repeater hops between any two ports.
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| 1766.2 | Repeaters in general and added hops | KEIKI::WHITE | MIN(2�,FWIW) | Tue Dec 06 1994 19:24 | 10 |
|
Now I'm confused, I thought that when repeater modules were used
in DEChub 90's that a hop did not have to added between repeaters?
Notes in Ethernet Conference seemed to imply this.
Also for standalone situations, if the upper connectors of our
repeater modules could be plugged together with the appropriately wired
cable, how many could be stacked this way with no hops added.
Bill
|
| 1766.3 | | NETCAD::HERTZBERG | History: Love it or Leave it! | Wed Dec 07 1994 08:49 | 11 |
| The only way as of now to stack any of our repeater products (including
the 90TS) with no hops added is in a DH900 using flex channel IMBs. Any
notes implying or stating otherwise are in error.
As for your second question, this is the thinwire BNC backbone stack I
referred to. You could plug up to 30 together over 185 meters, but
again, this is not one logical repeater; there are two repeater hops
maximum between any two ports of the stack.
Marc
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| 1766.4 | Do we now have stackable DETMI's? | KEIKI::WHITE | MIN(2�,FWIW) | Mon Feb 13 1995 18:34 | 7 |
|
Does the DETRX, allow stacking of Standalone DETMI's with no added
hop counts?
Bill
Came across this option in CEO when trying to track down the power
supply used for Standalone DETMI's.
|
| 1766.5 | | NETCAD::HERTZBERG | History: Love it or Leave it! | Tue Feb 14 1995 10:01 | 4 |
| The DETRX hasn't been announced, to my knowledge. When it is, the
answer to your question will be "no." The only "no added hop count"
solution we have right now is the flex channel architecture on the hub
900.
|