[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

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

705.0. "PacketProbe and DEChub 900" by ADO75A::SHARPE (Stop Whale Killing! Boycott!) Mon Feb 07 1994 17:31

    I have heard that the PacketProbe can only be connected on segment one
    in a DEChub 900MS.
    
    Is this true, and what impact does this have on monitoring a network.
    Is it possible that we may have to put in multiple PacketProbes to
    provide adequate coverage of a network?
    
    Regards
    Richard Sharpe

T.R	Title	User	Personal Name	Date	Lines
705.1	Any LAN as long as its thinwire.	CGOS01::DMARLOWE	dsk dsk dsk (tsk tsk tsk)	`Mon Feb 07 1994 17:58`	5
	'Fraid so. It only connects to the thinwire. You could do some LAN hopping in the hub to get the other IMB Ethernet LANs connected to the thinwire LAN. One at a time though. dave
705.2		NAC::FORREST		`Mon Mar 07 1994 15:23`	17
	The DECpacketprobe 90 is a 90 module, and thus was never intended to monitor a 900 backplane. We are planning to do such a module however. Send me mail if you want more info. In the interim, you can put DECpacketprobe 90s on appropriate DECrepeater 900TM ports to allow you to monitor each backplane channel. If you don't have anything else on the ThinWire channel, then you can use that as your monitoring channel, and connect repeaters to it as needed. This gives you the opportunity to monitor 1 channel at a time and switch it under software control. Note that putting a DECpacketprobe on one of the DECbridge 900MX ports is a waste of time - the bridge will only forward multicasts and packets destined to the MAC address of the probe.