arun b wrote: > 3) what is shlc ? Is it possible you're asking about "slhc?" If so, then that's the name of the kernel module on Linux that implements VJ header compression. That's yet another header compression mechanism, and is specific to IPv4 TCP. It was basically designed to make the usual 40 byte highly-predictable TCP header squeeze down to two or three bytes, so that interactive data (think: "telnet" or "rlogin") is usable over a slow serial link (think: "modems"). Again, pppd(1M) is your friend. It documents the options for turning VJ header compression on and off and adjusting the number of slots available. Header compression does not compress the data itself, and is not in any way related to CCP. Instead, VJ header compression is negotiated by IPCP. (The "slhc" module is Linux-specific, and isn't a generic PPP term. On other OSes, you'll see VJ compression implemented in other ways.) -- James Carlson 42.703N 71.076W <carlsonj@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
