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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

4395.0. "Data Capture not tracing exchange ( NT server - WS" by KERNEL::FREKES (Like a thief in the night) Tue May 06 1997 13:22

Folks

I have the following configuration. My problem is detailed below.

         1      2      3      4      5      6      7      8
	Probe  PS900  PS900  PS900  PS900  PS900  PS900  PS900
	90     TP     TP     TP     TP     TP     TP     FP
	       123    123    123    123    123    71234  1234	
         |     |||    |||    |||    |||    |||    |||||  ||||        
T/W    --#-----|||----|||----|||----|||----|||----#||||--||||
               |||    |||    |||    |||    |||     ||||  ||||
LAN 1  --------#||----#||----#||----#||----#||-----#|||--#|||
                ||     ||     ||     ||     ||      |||   |||
LAN 2  ---------#|-----#|-----#|-----#|-----#|------#||---#||
                 |      |      |      |      |       ||    ||
LAN 3  ----------#------#------#------#------#-------#|----#|
                                                      |     |
LAN 4  -----------------------------------------------#-----#

We than have a couple of switches connected into the ports in slot 8. Providing 
connectivity across the backplane LANS.

Expaned View of Slot 8

Ports 1-2 in Group 1
Ports 3-4 in Group 2
Ports 5-6 in Group 3
Ports 7-8 in Group 4

		Switch 1	900FP		 Switch 2    
	        port 1  ------- Port 1 
				Port 2 --------- port 1

	   	port 2	------- Port 3
				Port 4 --------- port 2

		port 3 	------- Port 5
				Port 6 --------- port 3

		port 4	------- Port 7
				Port 8 -------- port 4

The two switches are then connected together by two seperate links. One in 
spanning tree forwarding, and the other in spanning backup.

Hanging off one of the switches I have an NT server. 
The NMS is connected through slot 2 to LAN 1 (of the hub). 
The Workstation is connected through slot 7 to LAN 3 (of the hub).

We are able to ping all three stations. ie NT ->NMS
					   NT ->WS	
					   WS -> NMS
I am able to trace between NMS -> NT Server
			   NMS -> Workstation (WS)

But unable to trace between WS and Server. 

Rmon Manager V3.3
Probe V2.6

The customer tells me that when he installed RMON Manager, he was unable to 
trace packets from his NMS. But he fixed that by editing a config file. The 
name of which escapes him.

Does anybody have any ide why I cannot trace a data exchange between the 
Workstation abd the NT server. But I am able to ping both stations from the 
NMS?

Steven 
	
    
T.RTitleUserPersonal
Name
DateLines
4395.1NETCAD::HOPPEMon May 12 1997 17:5112
    What group is the Thinwire connection associated with in slot 7?
    It appears that LAN 1 and the thinwire are associated by a repeater
    group.  Therefore, the thinwire will see every packet on LAN1.
    LAN 3 and the thinwire are seperated by a bridge.  Therefore,
    the thinwire will only see packets flooded from LAN 3.
    
    That would explain why you cannot capture the conversation between
    the WS and the server.  The WS on LAN 3 is talking to a server on
    another bridge port.  The bridge will not flood that conversation
    onto LAN 1, so the packet probe will never see it.
    
    Chris  
4395.2now I am confusedKERNEL::FREKESLike a thief in the nightTue May 13 1997 13:1622
    Chris
    
    Thanks for the response. I am having problems trying to get my head
    around the switching matrix on the portswitch.
    
    On the Portswitch you can bring up the switching matrix. And you have the
    ability to place a tick from BP (port33) into 1 of 6 groups.
    Am I correct in assuming that this assigns the thinwire connection to
    the group you have placed the tick in. Therefore what ever LAN you
    connect that group to from the LAN Interconnect screen you will also
    see traffic from the TW. IE place the tick in group 2, and then place
    the leg for group 2 onto LAN 2. Would this then allow you to see all
    traffic on the thinwire or LAN 2, by plugged a device into whatever
    groups are assigned to group 2.
    
    Underneath the switching matrix, there is a scroll bar and the word
    Thinwire. From here you can have thinwire on group 1-6 or no
    connection. Does this not conflict with what the switching matrix above
    tells us?
    
    Confused
    
4395.3LAN Interconnect as wellSNOFS1::KHOOJEANNIELaziness breeds EfficiencyWed May 14 1997 22:1315
     Hi Steve
        
     On the PORTswitch grouping screen, there is an extra column you can
     tick to determine which group the MAC address is associated with.
        
     Underneath, there is the scroll bar where you can select which
     group the PORTswitch's thinwire is associated with.  However, if you
     want the DEChub's thinwire to be in the same LAN as that group, you
     have to, in addition, pull down the PORTswitch's thinwire stub (7) to the
     hub thinwire in the LAN Interconnect screen.
        
     Regards
     Jeannie