| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1136.1 | Watch your repeater hop count | LEVERS::PAGLIARO | Rich Pagliaro, Hub Products Group | Tue Jun 21 1994 10:16 | 34 |
| >> Q1. Can you connect a DEChub 10BaseT repeater directly to a Chipcom
>> 10BaseT repeater module in an ONline concentrator, or is a bridge
>> required?
Yes, you can connect any 2 10BaseT compliant repeaters directly
together, regardless of the vendor (ideally). Of course you must be
mindful of the total number of repeater hops in your LAN and you would
need a cross-over cable to connect the 2 repeaters.
>> Q2. Can the 900MX 10BaseT repeater in a standalone config be daisy
>> chained with other 900MX repeaters to form a stackable workgroup
>> configuration. If so, how many can be daisy chained?
I assume you mean DECrepeater 900TM or DECrepeater 900GM 10BaseT
repeaters. 900MX refers to the DECbridge 900MX which has 4 front bezel
10BaseT BRIDGE ports and 2 front bezel AUI BRIDGE ports.
That being said, you can daisy-chain up to 4 DECrepeater 900TMs
together via 10BaseT links. This results in a maximum 4 repeater hop
count between 2 stations connected to this workgroup. You would not be
able to connect this "stackable workgroup" to any other repeater in
your LAN since you used up your 4 repeater hop budget creating this
workgroup.
An alternative way to connect multiple stand-alone DECrepeater 900TMs
to form a "stackable workgroup" is to attach a Thinwire MAU to the AUI
port of each repeater's DEChub ONE docking station. You then
daisy-chain Thinwire coax between the Thinwire MAUs. This allows you to
connect approximately 28 repeaters together with only 2 repeater hops
between any 2 stations connected to the workgroup.
Regards,
Rich
|
| 1136.2 | Clarification? | ANGLIN::CLAYTON | Merlin Clayton DTN 445-7217 | Tue Jun 21 1994 11:07 | 26 |
| >> I assume you mean DECrepeater 900TM or DECrepeater 900GM 10BaseT
>> repeaters. 900MX refers to the DECbridge 900MX which has 4 front bezel
>> 10BaseT BRIDGE ports and 2 front bezel AUI BRIDGE ports.
Yes. I did mean the 900TM repeater - I just had a mental lapse on
suffixes.
>> An alternative way to connect multiple stand-alone DECrepeater 900TMs
>> to form a "stackable workgroup" is to attach a Thinwire MAU to the AUI
>> port of each repeater's DEChub ONE docking station. You then
>> daisy-chain Thinwire coax between the Thinwire MAUs. This allows you to
>> connect approximately 28 repeaters together with only 2 repeater hops
>> between any 2 stations connected to the workgroup.
OK. But if you were connecting the workgroup to a backbone it would
require that the backbone be thinwire also, right? I cann't think of
a clean way to connect the workgroup to a fiber backbone, and then
connect subsequent repeaters via thinwire. Possibly using a
DECrepeater 90FA at the headend to connect to the fiber backbone,
and running coax from the thinwire port to the DECrepeater 900TMs
in the workgroup is workable. What do you think?
Regards,
Merlin
|
| 1136.3 | The plot thickens... | LEVERS::PAGLIARO | Rich Pagliaro, Hub Products Group | Tue Jun 21 1994 12:03 | 22 |
| I think your idea of using a DECrepeater 90FA at the headend is a good
solution and would certainly work. Another option is to substitute a
DECrepeater 900GM for one of the 900TMs. The 900GM has 24 front bezel
10BaseT ports (using 2 50-pin Telco style connectors) plus a front
bezel AUI port in addition to the DEChub ONE AUI port. You would use
one AUI port to connect to your fiber backbone and one AUI port to
connect to your workgroup Thinwire segment. You obviously also need the
correct cable adaptors to convert the 2 telco connectors to 24 RJ-45
connectors.
A third option is to connect the AUI port of one stand-alone
DECrepeater 900TM to your fiber backbone and connect that repeater to
the rest of your thinwire-attached workgroup via a front-bezel 10BaseT
connection. This would result in a maximum of 3 repeater hops between
stations in your workgroup. You still have to be concerned with the
total repeater hops in your LAN. Will your repeater workgroup be
connected to a bridge or another repeater on the other end of the
backbone fiber?
Regards,
Rich
|