Conference kali::dewbr

		Hi John,
    
    
>    I know I should set up sub-interfaces, but are these 
>    required when using RIP?  Also, is it true sub-intf's
>    are only available on v 10.06 IOS and above?
    
	It's true that subinterfaces are only supported in 10.0 and above,
    not in 9.14. Actually, cisco first supported them in 9.21, but that
    software was never released for the DECbrouter, and cisco pulled it due
    to too many bugs. But keep in mind that 9.14 is NO LONGER SUPPORTED by
    either DEC or cisco; I'm not sure about 10.0, it's so old that I would
    assume no bugfixes are available for it either. If this is a "new
    proposal", the customer should run 10.3, which new DECbrouters should
    ship with (or is it 11.0(something now, Neil?). You don't wanna give them 
    unsupported 9.anything software.
    
    	Re: RIP, I don't remember any requirements of subinterfaces, though
    if you don't use them, it may be necessary to make sure split-horizon
    is disabled... My strongest advice is to *use suinterfaces*, this is
    what they were designed for, to ease implementation and avoid
    split-horizon issues, and DBMA issues in OSPF, if they ever convert to
    that religion...
    
>    Can I bridge Netbeui over Frame using CHDLC with anything
>    less than 10.3 IOS (note 1000 seems a touch cloudy on this)?
 
    
    	Bridging over FR has been supported since forever... Early versions
    of software didn't support IETF rfc1490 encapsulation bridging, so you
    *had* to use CHDLC if you needed to bridge. But I think you're correct
    that 10.3 was the first to support rfc1490 bridging.... again, my
    advice would be to implement the latest shipping 10.x11/x software & 
    subinterfaces; if you have problems in any earlier versions of software, 
    it can be difficult to get cisco to care (advisory: I am *not* a product
    manager, and I don't play one on TV), as they are focused on later 
    versions. 
    
    	Good luck,
    
    -Chuck O. (DECbrouter kibbutzer)
    

    Chuck,
    
    Thank you for your quick reply.
    
    I am coming into this situation after the customer has already been
    sold some equipment (brouters, etc...) through a network reseller (we,
    NSIS, are brought in by the reseller to implement).  Having said all
    that, I believe this customer may have been sold some equipment at
    Ver 9.x.  Do you know how long that version has been unsupported?
    
    I think that part of the implementation strategy should be to upgrade
    the brouters to current revision.  Are there any HW revision concerns
    that need to be verified prior to upgrading these brouters to current
    revision (ver 11.xx)?  Then, as you have suggested, I can properly
    'craft' the best strategy for Frame Relay implementation.
    
    I believe with their current revisions the whole thing is 'do-able'. 
    However, this would create a puzzling solution that would not take
    advantage of current feature(s), etc...
    
    Best Regards,
    
    John Malott

    	Hi John,
    
    You'll want to search the notesfile "dir/title=support" for a "real":
    answer... but it's been about 1.5-2 years since 9.x went unsupported,
    as my memory goes.... At the time, an upgrade program for customers to
    upgrade from "v1" brouters (which could only run 9.x) to V2, then later
    V3 brouters was announced.... This has also been discussed many times
    in here.... I don't think that the upgrade program is still in place,
    but you should probably check w/the product manager, Mike (HOTBMW::)
    Cinnamon to be sure.
    
     Basically, if you do a "sho version" command, look for the amount of
    memory and the amount  of flash. V1 brouters will show as having
    1024/1024 for memory, and can only run 9.x. V2 brouters will have 8 Mb
    of memory (shown as 60xx/2048), but only 4 Mb of flash, and can only
    run up to V10.0 software. "V3" DECbrouters will have 8 MB DRAM & 8 MB
    FLASH memory, and can run up to 11.1 software, which is the latest
    available from SSB; see recent notes (1273? 1279?) for extensive
    discussions re: 11.x availability.
    
    	Good luck,
    
    -Chuck O.
    

    Chuck,
    
    Once again, thank you for your quick (and very helpful) reply.  
    
    One more question.  You note V2 routers being able to run 'up to 10.0'
    code.  Does this exclude version 10.3, 10.2 ??
    
    Best Regards,
    
    John Malott
    

    	Hi John,
    
    Yes; 10.2 through 11.1 require > 4 Mb of flash memory for holding the IOS 
    operating system. 10.0 was <4 MB in size so it was OK; 10.1 was never 
    released.
    
    
    	best regards,
    
    -Chuck O.