David Laight wrote:
> On Thu, Dec 08, 2005 at 11:38:22PM +0100, Gert Doering wrote:
> 
>>Other protocols are even worse, IBM SNA usually aborts session
>>immediately if packets are lost (and reordering is counted as 
>>"lost")...
> 
> 
> The ISO protocols (eg class 4 transport over LLC1, and LLC2 itself)
> require that the network not duplicate nor re-order packets.

CLNS (over LLC1) doesn't care about duplicate or reordered paclets.
CONS (over LLC2) *does* care about duplicate or reordered packets.

TP4 will gracefully handle network lossage, but then it typically runs over
CLNS.  TP2 or TP0 won't since they run over CONS.

> Lost packets should be ok.

-- 
Matt Thomas                     email: matt@3am-software.com
3am Software Foundry              www: http://3am-software.com/bio/matt/
Cupertino, CA              disclaimer: I avow all knowledge of this message.