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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

351.0. "DECCONCENTRATOR 500" by GLDOA::MACK () Tue Sep 24 1991 19:47

    I'AM REQUESTING SOME HELP ON A DECCONCENTRATOR 500. CUSTOMER PURCHASED A
    DECCONCENTRATOR 500, CONNECTED IT TO HIS FDDI RING AND THE RING STARTS
    GENERATING ERRORS. I'AM NOT SURE WHAT THE ERRORS ARE, BUT THE RING IS
    NOT USEABLE WITH THE CONCENTRATOR ON. IS THERE ANY THING THAT HAS TO BE
    LOAD ONTO THE CONCENTRATOR TO MAKE IT WORK. IF SO PLEASE LET ME KNOW.
    WHEN THE CONCENTRATOR IS STANDALONE WITH 3-5 VS5000'S IT WORKS FINE.
    THE CUSTOMER HAS BEEN TOLD THAT HE NEEDS NEW FIRWARE V3.0. IS THERE A
    VERSION OF THIS FIRMWARE FOR ULTRIX ? ALSO THE NDU UTILITY FOR ULTRIX.
    
    
    
    				THANKS 
    
    				MIKE MACK
    GLDOA::MACK

T.R	Title	User	Personal Name	Date	Lines
351.1	We need more info...	PEACHS::SCHULTZ	Peripheral Visionary...	`Tue Sep 24 1991 23:41`	25
	Mike Please do not use ALL CAPS, as it is considered shouting. What exact errors is he generating when connecting the DEFCN to the main ring. What other equipment is on the ring, and who makes it and what is the topology of the ring. It is obvious that the DEFCN and the DEFZA modules in the 5000 systems are compatible as they are working. Quite a bit of the other vendors equipment has issues when connecting to ours. Many don't comply with the standard, or just interpreted the standard a little differant than we (DEC) did. The current version of the DEFCN and DEFEB code is available from the Customer Support Center. Version 3.0B is the current version of code for the DEFCN (Concentrator), and this includes version 6.2 of SMT. Please get the exact messages and situation from the customer, also get the other equipment (Makes and Models and Code Versions) on the ring and post it here so that we can try to formulate a solution. As far as I know, NDU is only available for VMS and not Ultrix. MTS
351.2		GLDOA::MACK		`Wed Sep 25 1991 10:06`	4
	Sorry about all the caps Some of the devices on the ring are Network System routers and Proteon model p4200. This network is campus wide. I will get more details later today.
351.3	Might be inability to deal with void frames...	BAGELS::LEVY		`Wed Sep 25 1991 16:48`	18
	re: .0 Since you say that the DEC gear works fine by itself, I'd suspect that at least one of the third-party boxes does not deal with void frames correctly. Void frames are used by Digital's Ring Purger to remove no-owner frames from the ring. In future versions of the DECbridge & DECconcentrator microcode, the Ring Purger will be a manageable attribute. If void frames are indeed the problem, and if this is a critical customer need, a special version of the current microcode can be provided with the Ring Purger turned off. Use your normal escalation channels to file a CLD in order to obtain this microcode. re: .1 DECndu is currently available in three flavors: VMS, RISC/ULTRIX, and VAX/ULTRIX.
351.4	Network Systems new �code.	STKHLM::TORGNY		`Fri Sep 27 1991 05:28`	16
	Hi, I've just been using DEFCN & DEFZA together with Network Systems NSC 6848 bridge/router. We noticed that the NSC box eats 1KB buffers and logged an error stating invalid frame class 255 type 1. However NSC have fixed this in there new �code, both for the router and bridge/router implementation. You can monitor the buffer usage in the NCS box to see if this is the problem. Access is via telnet or v24 port. Command syntax is fairly simple/friendly. Regards, Torgny...
351.5	firmware/revision	GLDOA::MACK		`Fri Sep 27 1991 17:04`	4
	Update, The devices on the ring are Proteon p4200[software v10.b rev4 firmware 6.5] Network System Router[firmware 221086-01 smt 6.2] Cisco asg plus router.