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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

2562.0. "Fiber Ethernet > 2Km?" by HGRNCC::FARADAYCHONG () Wed Jul 26 1995 07:56

    The old LANbridges (100/150/200) support maximum interbridge fiber
    optic distance of 3.0/3.0/10.0 Km respectively as documented on page
    A-2 & A-3 of "Bridge and Extended LAN Reference, EK-DEBAM-HR-003".
    
    Does any of DEChub 90/900 fiber Ethernet module support this range? We
    have customer who needs only Ethernet over 2.0 but less than 3.0 Km
    interbuilding LAN-to-LAN. It looks like we have to sell them old
    LANbridges.
    
    Faraday
T.RTitleUserPersonal
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2562.1others have itVAXRIO::ROLFVaporware Design SpecialistThu Aug 24 1995 11:007
    One of our major cometitor in the HUB market offers a 802.3 FOIRL
    transceiver which, they claim, will work over 3 Km. From other sources
    I hear that it problably works, given the link is within loss budget
    etc, but of course it is not supported by neither DEC nor the 802.3
    rules.
    
    Rolf
2562.2It's all in how you look at it...ROMEOS::HARRIS_MASales Executive IIThu Aug 24 1995 18:5910
    RE: -.1
    
    That reminds me of the customer in Phoenix a dozen years ago that ran
    VT52 terminals on 480-foot RS232 cables at 4800baud. They worked find
    as long as the terminals were never powered down!
    
    The world is a set of trade-offs. Some more important than others (like
    adherence to production networking rules I guess!)
    
    Mark