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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

2852.0. "LEDs on front panel" by SWETSC::ROSS () Thu Oct 12 1995 05:58

I do not think the following is a problem as everything is functioning OK, but I
could not discover the meaning in the manual.

I have a DECswitch 900EF and a Portswitch 900TP connected via the backplane lan
segments in a DEChub 900.  Whichever port is connected ,i.e.2 to 7, from the EF
via the backplane to the TP starts the corresponding left hand LED to flash.

If the port is connected to an inernal lan segment with no other connection,
then it remains constant green on the LED.

Also in hubwatch, v4.0.1 for windows, the ports show up as yellow, not green or
red.

Thanks in advance for any help.

Joe Ross
T.RTitleUserPersonal
Name		DateLines
2852.1Your indicators are showing a backplane connection...NETCAD::BATTERSBYThu Oct 12 1995 10:3018
    Joe, from your statement, I believe you are seeing what the 900EF does
    when one of its ports is connected to a backplane segment connecting
    to another device (the 900TP). The bridge port of the 900EF goes
    into a pre-forwarding state (flashing green port state LED) where it 
    will learn all the MAC addresses connected to that LAN segment. Then
    the port state LED will, after a while become solid green meaning
    the port has entered the forwarding state. The adjacent activity LED
    corresponding to the same port will turn yellow indicating traffic
    on this port is being seen on a backplane segment. If the same port
    was connected out the front the activity LED for this port would be
    green. So the port state LEDs of the 900EF do not change their color
    when a bridge port is connected to the backplane, only the port
    activity LED will change color depending on its connection to either
    the front or to a backplane segment. The HUBwatch indicator is telling
    you the direction of connection, and in your example that it is
    connected to a backplane segment. Hope this clears this up for you.
    
    Bob
2852.2SWETSC::ROSSThu Oct 12 1995 11:024
Bob, thanks for your reply.  It was the preforwarding that was confusing as I
have not seen this before.

Joe.
2852.3Installation Guide does good job of describing LEDs....NETCAD::BATTERSBYMon Jan 15 1996 10:149
    Joe, did you receive a copy of the DECswitch 900EF installation
    manual with your hardware? If so there is information in the
    manual describing the LEDs, what type (state, activity) they are, 
    and what they represent in their various states (on, off, blinking).
    Take a look, or if you don't have a hard-copy pull the manual from
    where they can be copied from. There are pointer in this notes file
    as to where you can copy docs from.
    
    Bob