[Ns-developers] Csma, ethernet length field, NSC and the link mtu...

[craigdo@ee.washington.edu]

> Yes, but I'd like fix this up properly. I'm too tired right 
> now to read
> docs, i'll check this tomorrow (i'm fairly certain the ethernet header
> doesn't belong there; think about it -- if you're not using LLC, there
> is no length field in the first place, and if you use LLC adding the
> ethernet header length reduces the maximum data you can carry 
> by 14 bytes,
> since the length field isn't allowed to exceed 1500).

See RFC 1042, page two.  First comes 802.3 MAC, then 802.2 LLC then 802.2
SNAP.

> I'll check literature & some OS implementations tomorrow to make sure
> that we have something that at least tries to stay in touch with
> reality...

I'm a dinosaur.  It's possible there's something newer than RFC 1042 that I
don't know about.

BTW, reality is overrated :-)

-- Craig