link level crap protection


Mike O'Dell (maximo!mo@uunet.UU.NET)
Wed, 30 Mar 88 19:34:06 EST


For my two cents...
If the purpose of a SLIP checksum is ONLY to allow SLIP to know
a packet is bad and to discard it, then it is tolerable.
If it does ANYTHING beyond inspect it for damage, trash
the broken packet, and increment a counter, it is wrong.

I understand Rick's experience, but I have also felt that the
protocols really expected to get a Good packet or No packet.
The checksumming is there for the occassion when the No packet
case screws up and the wire delivers junk.

This may not have been spelled-out anywhere, but has been
a religious believe of mine.

        -Mike O'Dell



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