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Conference noted::atm

Title:atm
Moderator:NPSS::WATERS
Created:Mon Oct 05 1992
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:970
Total number of notes:3630

880.0. "work?" by NETRIX::"eric gan@bejvc" (eric gan) Wed Mar 26 1997 04:34

Hi, there

Does these work?
1)
ATM host  SVC  ATM switch  PVC  ATM switch  PVC  ATM switch  SVC ATM host
        --------         --------        ---------        --------

2)
ATM host  LANE  ATM switch  CIP  ATM switch  CIP  ATM switch  LANE  ATM host
       ----------        ---------        ---------        ----------
Note the middle switch only support PVC/CIP.

Thanks,
eric
[Posted by WWW Notes gateway]
T.RTitleUserPersonal
Name		DateLines
880.1Doesn't workSMURF::GREBUSDTN 381-1426 - Digital UnixWed Mar 26 1997 13:1521
    
    1)
    ATM host  SVC  ATM switch  PVC  ATM switch  PVC  ATM switch  SVC ATM host
            --------         --------        ---------        --------
    
    No.  To use SVC's at the endpoints, there has to be a signalling path
    all the way through.  If the middle switch supported it, you might be
    able to use a virtual path to link the two end switches.
    
    
    2) ATM host  LANE  ATM switch  CIP  ATM switch  CIP  ATM switch  LANE  ATM
    host
           ----------        ---------        ---------        ----------
    
    Again, no.  If the hosts are getting IP connectivity via LANE, there
    would have to be an IP router between the LANE based subnet and a
    subnet that was using classical IP.
    
    	/gary
880.2The singnalling ...NETRIX::"eric gan@bejvc"eric ganThu Mar 27 1997 01:5317
>   1)
>   ATM host  SVC  ATM switch  PVC  ATM switch  PVC  ATM switch  SVC ATM host
>          --------         --------        ---------        --------
>    
>    No.  To use SVC's at the endpoints, there has to be a signalling path
>    all the way through.  If the middle switch supported it, you might be
>    able to use a virtual path to link the two end switches.

I remmember that the signalling be doing by the host, when I setup the ATM
host
I should do "atmsig up ..." in alpha. So, if I have this alpha attached on 
endpoints switches, work?

Thanks,
eric 
[Posted by WWW Notes gateway]
880.3NPSS::NEWTONThomas NewtonThu Mar 27 1997 06:035
Signalling on the two Alpha hosts is necessary, but not sufficient.  As the
previous reply pointed out, in order to set up SVCs between two hosts, all
of the ATM switches between these two hosts must support signalling, and/or
trunking of VCCs (including the signalling VCC) over a virtual path.