Hi, Curtis Generous wrote:
And with the push to use multicast across such high latency links, you can get better dessimination of some types of data which involve many sites within a satellite's foot print (e.g. nntp, ftp mirroring, db syncronization).
Or broadcasted web caching - people who subscribe get daily updates to their favorite sites.
There also is a new proposed spec for doing FTP using multicasting (MFTP - multicast FTP) which has been tested using some INTELSAT birds with good results. MFTP has also the characteristic of reduced sensitivity to long latency, but also to the bit error rate (BER) which is also a problem when using satellites.
Sounds good for push media, too --- without multicast, these will kill international links. -- miguel a.l. paraz <map@iphil.net> +63-2-893-0850 iphil communications, makati city, philippines <http://www.iphil.net>