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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

3097.0. "DEFLM/SQE/DECswitch900/DECbridge90" by PTOJJD::DANZAK (Pittsburgher �) Mon Dec 25 1995 08:23

             <<< UPSAR::USER$411:[NOTES$LIBRARY]ETHERNET.NOTE;1 >>>
                             -< Ethernet Volume 3 >-
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Note 766.0             DEFLM/SQE/DECswitch900/DECbridge90             No replies
PTOJJD::DANZAK "Pittsburgher �"                      16 lines  23-DEC-1995 08:27
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    In the following configurations, should the SQE switch be enabled on the
    DEFLM?  Why?
    
    Thanks!
    j
    
    
    #1
    
    PORTswitch900FP--------->DEFLM->AUI-on-DECswitch900EF
    
    #2
    PORTswitch900FP--------->DEFLM->AUI-on-DECbridge90
    
    Thanks!
T.RTitleUserPersonal
Name		DateLines
3097.1Disable heartbeat=SQELEMAN::PAIVAHawkeye - Network Support @GEOFri Dec 29 1995 08:279
    I'd say NO because you'll be in an IEEE 802.3 Ethernet network and not
    an Ethernet V2 one. However, if you have a VMS system for instance
    you'll should see your "Carrier Detect Check Failure" counter increment
    whenever you send a packet (in the DECnet IV line counters).
    
    Cheers,
    
    Pedro
3097.2Turn it ON.MSDOA::REEDJohn Reed @CBO = Network ServicesFri Dec 29 1995 20:5711
    Heartbeat should ALWAYS be enabled, regardless of IEEE 802.3, or
    ENET_II.  The ONLY time to disable heartbeat is if the NIC side of the
    transceiver is connected to a repeater port, or a DELNI  (The DELNI
    only because someone MIGHT attach a repeater to the DELNI).
    
    Both instances in your example (#1, and #2) are showing the MAU
    connected to the AUI port of a bridge.  In both of these cases there is
    no question.  The SQE should be enabled.
    
    JR