[HECnet] DECnet et al

[hvlems at zonnet.nl]

If there is no router present (on ethernet) then an endnode will just try and send the datagram. It knows the destination decnet address and thus can compute the target mac address. 
------Origineel bericht------
Van: Johnny Billquist
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Aan: hecnet at Update.UU.SE
Beantwoorden: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] DECnet et al
Verzonden: 17 juli 2011 19:49

On 2011-07-17 19.45, Bob Armstrong wrote:
And so those packets will be tossed.

    Tossed by who?   The bridge program?

No. By the endnode itself. It have no idea where to send it. For 
ethernet, DECnet supposedly already knows the MAC address where to send 
every packet. Where would it send a packet that isn't to the local 
ethernet segment? It needs to send it to a router, which will forward 
it. But since there is no router, there is nothing it can do with it. 
DECnet data traffic is not broadcast...

Just as information - from MIM, the area furthest away is are 59, which 
is three hops distance. So it packets needs to pass through two 
intermediate level 2 routers to get to the right area.

	Johnny

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