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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

1433.0. "How do our Ethernet bridges work?" by STRWRS::KOCH_P (It never hurts to ask...) Thu Sep 15 1994 12:34

    I just want to make sure I understand how our FDDI to Ethernet bridges
    work.
    
    If I have 2 systems and they are on different Ethernet segments on the
    same bridge, does our product require that a packet which is sent
    between these 2 system go over the FDDI or do they simply go from one
    Ethernet port to the other Ethernet port within the bridge?
    
    Also, if I have the same scenario, do any of the other Ethernet
    segments ever seen that packet? I know it's a stupid question, but I'm
    working at a site with competitors bridges and I seeing lots of
    Ethernet traffic on a segment where it doesn't seem I should be. So, if
    I recommend our bridges, I want to make sure how they work.
T.RTitleUserPersonal
Name
DateLines
1433.1Go for it.CGOS01::DMARLOWEHave you been HUBbed lately?Thu Sep 15 1994 13:5824
>    If I have 2 systems and they are on different Ethernet segments on the
>    same bridge, does our product require that a packet which is sent
>    between these 2 system go over the FDDI or do they simply go from one
>    Ethernet port to the other Ethernet port within the bridge?

    No.  The packet is switched to only the port it has to go to, no
    others.
        
>    Also, if I have the same scenario, do any of the other Ethernet
>    segments ever seen that packet? I know it's a stupid question, but I'm

    No.  Unless its a multicast or broadcast which must to out to all
    ports.
    
>    working at a site with competitors bridges and I seeing lots of
>    Ethernet traffic on a segment where it doesn't seem I should be. So, if
>    I recommend our bridges, I want to make sure how they work.

    Recommend ours.  8^)   Are they bridges or repeaters?  I don't think
    ther are any bridges (cut thru or store and forward) that can move
    as many packets as the DECswitch 900EF and not buckle under the
    heaviest load.
    
    dave
1433.2The DECswitch 900EF doesn't know what the word buckle is :-)NACAD::BATTERSBYThu Sep 15 1994 14:444
    Dave is right on all counts, and by all means recommend ours.
    The DECswitch 900EF moves packets at wire speed.
    
    Bob