"dreaM" wrote in message
news:bmdmff$ncn$1@nemesis.news.tpi.pl...
> Hello,
>
> I've question...
> How to compute CRC for IP and TCP apart. I must build own PPP/TCP/IP
> packet which I will be sending
> by BASCOM compiler. I have on mind - this is not object language. I must
> create own invention...
>
> Any ideas? Good books, www?
> Ps. Sorry for repeating (TCP computing - by Ken)
>
> Please help me.
>

The PPP CRC has to be computed from the encoded packet - you cannot do it in
parts.

There are also IP header checksums and UDP and TCP checksums to compute.

HTH

Tauno Voipio
tauno voipio @ iki fi