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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

3285.0. "PESwitch900TX excessive collisions ?" by BARNA::DSMAIL () Thu Feb 15 1996 09:29


	Hi,

	Hope somebody answers...

	In a PESwitch900TP context installed in a Hub900 and tied to
	DECswitch900EF via internal FDDI.

	Looking at PEswitch counters it appears on three ports Excessive
	collisions being the same value that Xmit errors, and on other port
	it appears Carrier Sense Errors having the same value that the Xmit
	errors on this port.

	Can anybody explain me how a Personal Ethernet Switch can have
	excessive collisions?

	Isn't each port a different collision domain?

	Carrier sense failure...where is the backbone? there is a backbone per
	port?

	I have to say that module was low of fw revision and yesterday I
	"hubgraded" it from 1.1.0 to 1.1.1 also DEChub was upgraded from
	4.0.4 to 4.1.0.

	Any comment will be appreciated.

	Jordi Manchon
	Network Services
	Barcelona
T.RTitleUserPersonal
Name		DateLines
3285.1FW upgrades and tehn ?LEMAN::PAIVAHawkeye - Network Support @GEOFri Feb 16 1996 10:033
    Did the FW upgrades change anything?
    
    Pedro
3285.2At the moment no errors...BARNA::DSMAILMon Feb 19 1996 11:228
    
    After the fw upgrade (last week) no more errors have been observed.
    But I'm not sure if the upgrade has been the reason.
    Do you think the new fw solves such kind of problems?
    In fact the customer was complaining about disconnecting sessions on 
    systems connected to the PEswitch.
    
    Jordi Manchon