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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

2976.0. "High idle FDDI network utilization" by TOSSUB::BRUSA () Tue Nov 14 1995 09:49

	We have a very simple configuration a DECswitch 900EF DAS connected
	with an DEFEA on a AXP 1000 station running  OpenVMS 6.2.
	Other systems are connected to the Ethernet ports of the switch.
	We have Hubwatch version 4.1.

	Monitoring with Hubwatch the FDDI network, every 8/10 minutes the
	FDDI network utilization goes on an average between 10/40% stays
	there for one minute and aftewards goes down to <1%.
	In the same minute on the FDDI port we have an 80/100% of frame 
	filtered.
	While we can understand the frame filtered on the FDDI port we
	cannot understand why we have such and high network 
	utilization without any customer generated traffic and the FDDI 
	is just idle. Can anybody explain this please?
	We disabled the ring purger on the switch and on the DEFEA but no
	difference.

	This entry is crossposted in the HUB_MGMT and in the FDDI conferences
	Regards Livio
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