Conference netcad::hub_mgnt

152.0. "some questions from a novice" by ROM01::CENCI (sono dolce come un toblerone) Tue Feb 09 1993 08:59

    Hello,
    I've never used so far the DEChub, but I'm involved in a deal whose 
    objective (among many other things) is to connect 43 remote sites to 
    a "data center".
    I'm trying to understand whether DEChub can be a Trojan horse for us.
    
    Each remote site has only a bunch of PCs which currently use telephone
    lines (low speed switched lines: 2400 baud) to establish a connection
    to central hosts (old Philips P4700s we wish to replace with ALPHA
    systems). To date, the number of PCs per site is by all means less than
    8, and are served by a multiplexer (at each site).
    
    My very naive questions are:
    
    1)we want to replace the MUXs, as well as the Philips P4700. Can we
    effectively use e.g. a (standalone) DECserver 90TL at each site 
    to "concentrate" the PCs? What do I need (hw. + sw) to build such a star 
    configuration?
    Do I also need a router (if TCP/IP is not required) in the DEChub?
    
    
    2)if I remember well,  a DECserver 90TL can be loaded by a PC with
    Pathworks/DOS. Can you confirm?
    
    3)suppose I want to use the Internet suite of protocols. I need a TCP
    router, I gather. Is our current offer limited to the Wanrouter 90?
    
    
    4)would you please give me some more info. on DEChub900 , DEChub900MS,
    and explain in a few words the differences between these hubs and the
    DEChub 90? Is the MS model capable of doing port switching? And what
    about management? Can we do anything more than turning ports off/on
    through SNMP directives?
    The reason for this question is that I want to assess which model is
    best suited for the customer's requirements.
    
    
    Thanks in advance for your replies
    
    
    Fabio
    

Hello Fabio,

If you wish to integrate 43 locations with each 8 PC you have to use
1.) Pathworks for DOS (on each PC the whole Software H-Kit as disks)
    to get best access to the ALPHA (VMS)
2.) install in one PC the ETHERworks router (only a board) to get X.25
    connection to the ALPHA
3.) use DECrepeater 90T to integrate all PC's

that's it.

DEChub900/900MS

DEChub900 "big brother" of DEChub90 with internal 2 Thinethernet, 2 
TokenRing, 1 FDDI and 1 flexible Channel. Modules will be available for all 
this Topologies in a couple of month. Chouse between E-net 1/2, TokenRing 1/2
to seperate your LAN trafic. Finde infofiles on EMDS::Management get infos 
from EMDS::SEAVER (Bill Seaver)??!!
DEChub900 MS has 12 flexible channels which can define as E-Net, TokenRing, 
FDDI, in future ATM or others.

Wolfgang

	Fabio, you didn't say what protocol is being used between the PCs 
	and the Phillips machine. Is it X.25, as suggested in .1, or is 
	it perhaps Telnet or LAT? 

	Depending upon when the equipment has to be deployed, you may 
	want to check into the 	products that are being developed by CSS in 
	Australia for just such remote connectivity problems. Contact 
	Peter Ambrose at SNOC01::AMBROSEP.

	And CSS in Annecy is developing something for ISDN. These all 
	will play in the DEChub 90, or standalone. Contact Phillipe 
	Roussin-Moynier @AEO.

	jack

    Thanks a lot Wolfgang & Jack. Your replies are very interesting and so
    are your pointers. 
    
    
    Re. Jack: I think the customer will foster X25 to connect the remote
    sites.
    
    I'll post a note when we're given the green light
    
    Best regards
    
    Fabio