Conference netcad::hub_mgnt

3829.0. "RFQ question on 100BaseTX and VNswitches" by GIDDAY::STANISLAUS () Mon Sep 02 1996 03:20

	Will I be giving out any Company Confidential information if I propose
the following configuration to a customer who has four floors with multiple
Ethernet LANs on each floor and wishes to go up to a 100 Mb/s Ethernet backbone.
He also wishes to put 3 x Routers in the basement as follows:

	Customer's Request. Wants it all implemented by Oct/Nov 1996.
	-------------------------------------------------------------

	1)There are 4 floors and each floor will have 12 to 16 Ethernets now
and will have many (??) more in future.

	2)A basement with 3 x Cisco routers or 3 x Digital's RouteAbout Centrals
providing WAN connectivity. These 3 units should each have 2 Ethernet ports
and 8 Serial Ports.

	3)A computer room with a 100 Mb/s switch, connecting the above 4 floors
and the basement together and to begin with, this computer room will have 
2 x Alpha 2000 5/250 systems with 100 Mb/s interfaces. Also this computer room 
should provide Ethernet connectivity to the 3 x routers in the basement 
(i.e. via 6 x 10 Mb/s switched ports).

	If allowed to, I plan to propose the following. If not, please give
suggestions.

	1)Each of the 4 floors have a DEChub 900 with one VNswitch 900EX to
begin with; with one DEXYM-AA 100BaseFx MMI for multimode fiber. This will
provide 12 Ethernet Switched Ports and 1 Full Duplex (200 Mb/s) 100BaseFX
uplink to the computer room for each of the 4 floors.

	2)In the Computer Room have a DEChub 900 with 3 VNswitch 900EX. Two
VNswitches with 2 x DEXYM-AA  100BaseFx MMI for multimode fiber in each VNswitch
to connect the 4 floors together and one VMSwitch with 2 x DEXYU-AA  
100BaseTx MMI for UTP-5 to connect the the 2 x Alpha 2000 5/250. There will be
altogether 36 x 10BaseT Ethernet Ports on these 3 x VMSwitches out of which 
only 6 x Ethernet 10BaseT ports will initially be used to connect the basement
routers' 6 x Ethernet 10BaseT ports and 30 X Ethernet ports not used (a big
waste). But we do not have a 100BaseFX or 100BaseTX device that has more 100
Mb/s ports and less 10 Mb/s ports, as far as I know.

	3)A DE500-AA card in each Alpha 2000 4/250 system.

	Any comments please ?

Alphonse

    I've forwarded your note to the product manager Rick Forberg.
    He may not provide an answer in here, but I'd think he'd likely 
    give you an answer by mail.
    
    Bob

    You may also want to talk to Mike Bouchard (MS600 PM) (dtn 226-7348,
    508-486-7348) about an OEM 10/100 switch product that may be available
    in the December time frame.
    
    Tom Herendeen
    NPB SE