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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

1270.0. "OSF CANT GET OUT OF RING" by MSBCS::HURLEY () Wed Mar 09 1994 13:15

    I looked at the OSF topics in here but could not find any info 
    regarding my problem.
    
    	We have 2 systems here running OSF V1.3 They each have a 10 meg
    board and a 100 meg board. When the run the sysetm with the 10 meg
    board everything works ok and they can talk to any system on the net.
    
    	When they run on the fddi board the only systems they can talk to
    are the systems on the fddi ring. Once they try to get out of the ring
    to any other node they are unable to connect. We have check the 620
    bridge and the 510 bridge but nothing is beting filtered.
    
    Any clues at all??
T.RTitleUserPersonal
Name
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1270.1JEDI::CAUDILLKelly - Net Tech Support - 226-6815Wed Mar 23 1994 13:197
    Are the FDDI/ethernet bridges set to fragment the IP packets?  
    
    The IP packets going out on FDDI are around 4400 bytes long.  Packets
    on an ethernet can only be around 1500 bytes long.  The DECbridge 5xx
    and 6xx bridge have the ability to fragment IP packets and thereby
    solve this problem, but that feature can be disabled.  I think it is
    enabled by default.