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Conference netcad::hub_mgnt

Title:	DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:	Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:	NETCAD::COLELLADT

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

3447.0. "Question : DEMON and REPEATER 90 configuration rule" by YOOV21::MURATA () Mon Apr 15 1996 09:49

   My customer use REPEATER 90 series ,since all repeater ports are connected to
  PC, there isn't any port not connected, they plan to buy DEMON and to use.
 
   They have questions, that under the next figure configuration, 
  "Can PC1 (connected DEMON2) communicate to PC2 (connected DEMON3) ?",
  "In other words ,Is this configuration valid to 5-4-3 rule between PC1 and 
  PC2 ?",  and 
  "If DEMON4 is connected to DEMON3, Can PC3 (connected DEMON4) communicate to PC1
  (connected DEMON2) ?"
                 
    +----+----------------+
    |    |SERVER   90TL   |                     
    | H  +----------------+          +--------+           +--------+
    | U  |REPEATER 90T    |..........|DEMON 1 | ..........|DEMON 2 |  
    | B  +----------------+  10BASE2 +--------+ 10BASE2   +--------+
    | 9  |REPEATER 90T    |                                 |         
    | 0  +----------------+                                 |
    |    |REPEATER 90T+   |                               +---+            
    | #  +----------------+                               |PC1|     
    | 1  |REPEATER 90T+   |                               +---+      
    |    +----------------+                     
    |    |REPEATER 90T+   |                     
    |    +----------------+          +----------------+           
    |    |REPEATER 90T    |..........|DEBET for LTM   |
    |    +----------------+  10BASE2 +----------------+
    |    |REPEATER 90FA   |                     
    +-+--+----------------+                     
      |                               +---+
      | 10BASET                       |PC2|          
      |                               +---+
    +-+--+----------------+             |
    |    |SERVER   90TL   |             |        
    | H  +----------------+          +--------+
    | U  |REPEATER 90T    |..........|DEMON 3 |                       
    | B  +----------------+  10BASE2 +--------+
    | 9  |REPEATER 90T    |              
    | 0  +----------------+           
    |    |REPEATER 90T    |            
    | #  +----------------+           
    | 2  |REPEATER 90T    |                     
    |    +----------------+              +------+         +------------+
    |    |REPEATER 90T    |              |L621  |=========|GIGA SWITCH |
    |    +----------------+          +---+------+  DAS    +------------+
    |    |REPEATER 90T    |..........|mau|L602  |
    |    +----------------+ 10BASE2  +---+------+
    |    |BRIDGE   90     |               NIS 600
    +----+----------------+                     


  Thanks in advance for the help ,

  Kouichi Murata / Japan MCS Shin-Yokohama office

T.R	Title	User	Personal Name	Date	Lines
3447.1	DEMON gone....	JULIET::HARRIS_MA	Sales Executive II	`Mon Apr 15 1996 16:29`	6
	RE: .0 (Side note: DEMON-AA has been discontinued. It is no longer a valid product.) Mark
3447.2	Please advice again,Thank you.	YOOV21::MURATA		`Tue Apr 16 1996 05:32`	60
	RE. -1 , Thank you for your reply. > My customer use REPEATER 90 series ,since all repeater ports are connected to > PC, there isn't any port not connected, they plan to buy DEMON and to use. Sorry, my above expression is wrong. Please adivice again, thank you. My coustomer already bought DEMON some months ago , and is using . ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ They plan to change configuration like the next figure, and have questions that "Can PC1 (connected DEMON2) communicate to PC2 (connected DEMON3) ?", (DEMON2 is connected DEMON1 by 10BASE2) "In other words ,Is this configuration valid to 5-4-3 rule between PC1 and PC2 ?", and "If DEMON4 is connected to DEMON3, Can PC3 (connected DEMON4) communicate to PC1 (connected DEMON2) ?" +----+----------------+ \| \|SERVER 90TL \| \| H +----------------+ +--------+ +--------+ \| U \|REPEATER 90T \|..........\|DEMON 1 \| ..........\|DEMON 2 \| \| B +----------------+ 10BASE2 +--------+ 10BASE2 +--------+ \| 9 \|REPEATER 90T \| \| \| 0 +----------------+ \|10BASE2 \| \|REPEATER 90T+ \| +---+ \| # +----------------+ \|PC1\| \| 1 \|REPEATER 90T+ \| +---+ \| +----------------+ \| \|REPEATER 90T+ \| \| +----------------+ +----------------+ \| \|REPEATER 90T \|..........\|DEBET for LTM \| \| +----------------+ 10BASE2 +----------------+ \| \|REPEATER 90FA \| +-+--+----------------+ \| +---+ \| 10BASET \|PC2\| \| +---+ +-+--+----------------+ \| \| \|SERVER 90TL \| \|10BASE2 \| H +----------------+ +--------+ \| U \|REPEATER 90T \|..........\|DEMON 3 \| \| B +----------------+ 10BASE2 +--------+ \| 9 \|REPEATER 90T \| \| 0 +----------------+ \| \|REPEATER 90T \| \| # +----------------+ \| 2 \|REPEATER 90T \| \| +----------------+ +------+ +------------+ \| \|REPEATER 90T \| \|L621 \|=========\|GIGA SWITCH \| \| +----------------+ +---+------+ DAS +------------+ \| \|REPEATER 90T \|..........\|mau\|L602 \| \| +----------------+ 10BASE2 +---+------+ \| \|BRIDGE 90 \| NIS 600 +----+----------------+ Thanks in advance for the help , Kouichi Murata / Japan MCS Shin-Yokohama office
3447.3	Too many repeaters ...	SNOFS1::KHOOJEANNIE		`Wed Apr 17 1996 08:38`	10
	You have your 10Base2 and 10BaseT labels transposed, but this config violates the Ethernet repeater rules (you cannot have >4 repeaters between any 2 nodes). Going through each DEMON is 1 rptr, going thru DECrptr to DEChub 90 thinwire (hub 1) is also 1 rptr, and from DEChub 90 thinwire thru DECrptr (hub 2) is also 1 rptr etc ... Rgds Jeannie
3447.4	Thank you for your quick reply !	YOOV21::MURATA		`Thu Apr 18 1996 01:50`	0