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Conference irocz::common_brouters

Title:	Digital Brouters Conference
Notice:	New common-code brouter family: RouteAbout, DECswitch 900
Moderator:	MARVIN::HARTLL

Created:	Mon Jul 17 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	929
Total number of notes:	3736

735.0. "RouteAbout w/ 2 DTEs to same host" by KYOSS1::SLAGLE () Thu Jan 30 1997 13:21

    At a customer's site we have a RouteAbout Access EW/MP configured for
    X.25 switching.  The WAN link goes to a Compuserve cloud @ 56K using LCNs
    1-64.  I configured a LLC2 LAN link to a Digital Unix system also using
    LCNs 1-64. This configuration is working fine.  The customer now wants
    to migrate a second physical line from Compuserve (which had been
    connected to an old Motorola system) to the second port on the
    RouteAbout.  This line also has LCNs 1-64 and these users will go to
    the same Digital Unix system.
    
    Since there can be only one LLC2 link between the RouteAbout and the
    Digital Unix system, can I just modify the existing link to use
    channels 1-128.  Each WAN link uses LCNs 1-64.  Is there any
    correlation between the WAN LCN asignment and the LLC2 LCN assignments?
    
    Is there any other problem with configuring a second DTE on the
    RouteAbout with X.25 switching to the same host?
    
    Thanks,
    Everett Slagle
    Suburban NY/NJ MCS Product Support

T.R	Title	User	Date	Lines
735.1		MARVIN::WALTER	`Thu Jan 30 1997 14:38`	15
	This could be a problem, as the X25 software does not distribute outgoing calls over multiple DTEs. If there is a way to seperate outgoing calls, using one of the filter parameters (eg NUI, calling DTE+local subaddress, call data, etc) then you can define more than one filter and associate each one with a different client/DTE. Incoming calls will work fine, just define a filter for each DTE and associate them with a single client for the LLC2 DTE. We will be modifying the LLC2 interface in a future release, so that it is possible to have multiple LLC2 DTEs to the same host. In this case, the host software should distribute calls over all DTEs in the same X25 Access DTE Class.
735.2	Only incoming calls	KYOSS1::SLAGLE	`Thu Jan 30 1997 19:07`	9
	In this case, as far as I know, there are only incoming calls. Remote offices come in as X.29 users through Compuserve to access applications on the Unix host. There should be no outgoing calls. Should I be concerned about those LCN issues? Is there a problem with each WAN DTE using LCN 1-64 and the LLC2 link using LCN 1-128? Thanks, Everett
735.3		MARVIN::WALTER	`Fri Jan 31 1997 07:21`	13
	> In this case, as far as I know, there are only incoming calls. Remote > offices come in as X.29 users through Compuserve to access applications > on the Unix host. There should be no outgoing calls. Phew!! > Should I be concerned about those LCN issues? Is there a problem with > each WAN DTE using LCN 1-64 and the LLC2 link using LCN 1-128? Sorry, I forgot to answer this part of your original question: the LCN ranges are independent on each of the DTEs. So as long as you have enough LCNs ( 128 ) on the LLC2 DTE it will be ok.