"Burnham, Chris" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Michael I am a bit confused.If you have SNA still on the network (which
most
> big Corporates do) would you not be using Token Ring?
> Can you run SNA over Ethernet using LLC2? why only LLC2 & not LLC1 or EV2
??
It seems Priscilla got to the answers before I did =). But I echo her
statements. Personally, most places I have worked run SNA over Token Ring.
> Below you stated that LLC2 is diminishing because of the reliability of
> higher protocols such as TCP, however as I understand SNA does not use TCP
> and therefor you will always need LLC2 if you are running SNA.??????????
Can
> you please clarify or point me in the direction of a good book.
As far as this point goes, many people are choosing to implement STUN/BSTUN
or DSLw in order to transport SNA over the much more common IP WAN. The
place I work uses these technologies strictly. We have our mainframes that
connect to mainframes of 20 other businesses and for each of those we have
routers on the clients' sites that are there strictly to act as a DLSw
tunnel endpoint (peer).
> As I understand Netbios & SNA can be encapsulated in TCP ,& therefor use
its
> connection orientated services & run over ev2 or 802.3SNAP. If you were
> implementing SNA & NETBIOS straight onto the wire would you then have to
use
> LLC2 ( DO THESE PROTOCOLS HAVE TO RUN ON A CONNECTION ORIETATED TRANSPORT)
Can't answer that one........ I would think that if they wanted
reliability, they would need to use LLC2.......
> rgds. Chris.B
>
>
>
> Chris Burnham,
> Systems Engineer,
> Delphis Consulting Plc.
> Tel: +(44) 020 7916 0200
> Mob: +(44) 07799403576
> [EMAIL PROTECTED]
>
>
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