Date: Thu, 16 Apr 1998 12:11:10 -0400 (EDT) From: "Matthew N. Dodd" <winter@jurai.net> To: "Cambria, Mike" <MCambria@lucent.com> Cc: freebsd-tokenring@FreeBSD.ORG Subject: RE: FW: LLC Spec. Outline (monospaced view) Message-ID: <Pine.BSF.3.96.980416115433.523X-100000@sasami.jurai.net> In-Reply-To: <813D2854D1B0D1118236006097177581036AEF@smtp.Lucentmmit.com>
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On Thu, 16 Apr 1998, Cambria, Mike wrote:
> Level 0 vs. Level 1? I'm more of an IEEE type than an ITEF type. I'll
> pull the RFC and see if it definces Level 0 etc.
>
> Since you mentioned "connectionless" with Level 0, I'll infer LLC Type 1
> == Level 0. So it seems that there will be no LLC2 (ie. connection
> based) work. Thus, there is no desire to support NetBIOS? SNA?
I'm just repeating the terminology that Garrett used. You are correct
however, token-ring will require only a complete type 1 implementation.
I'm not opposed to supporting NetBIOS and SNA but I want to make sure that
we aren't biting off more than we can chew right now. I think a safe
approach would be to do a complete type 1 implementation and reduce the
amount of code duplication in the FDDI subsystem, add 802.3 support to the
ethernet subsystem and figure out how we are going to support multiple
frame types.
This is something ifconfig will have to be able to deal with...
How will we store frame type information in the ifaddr/ifnet structure?
How will we deal with differing MTU sizes on the same interface?
Will we do something like this?
de0: flags=8802<BROADCAST,SIMPLEX,MULTICAST>
Frame: ethernet_II MTU: 1500
inet 207.153.65.3 netmask 0xffffff00 broadcast 207.153.65.255
inet 207.153.65.4 netmask 0xffffffff broadcast 207.153.65.4
ipx f00f.e8c4a06f
frame: ethernet_802.3 MTU: 1492
inet 10.0.10.12 netmask 0xffffff00 broadcast 10.0.10.255
ipx f00d.e8c4a06f
ether 00:c0:95:f0:25:f4
media: 10baseT/UTP status: active
> If the goal is to run IP/IPX over token ring, then LLC1 (ie.
> connectionless 802.2) is indeed all that is needed. I do it all the
> time.
Cool. Thats what I suspected.
I'm not going to vote to close any doors but at this point we should only
implement the code that we need.
/*
Matthew N. Dodd | A memory retaining a love you had for life
winter@jurai.net | As cruel as it seems nothing ever seems to
http://www.jurai.net/~winter | go right - FLA M 3.1:53
*/
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