nanog mailing list archives
Re: connectivity outside the US
From: Curtis Generous <generous () uucom com>
Date: Mon, 2 Jun 1997 10:39:54 -0400 (EDT)
According to Paul A Vixie:
High orbit, geosyncronous sattelites do not stand much of a chance against land lines as the latency on the links is quite high. [...]Long latency is not automatically bad. It is bad for interactive traffic, but if the bandwidth is high enough to reduce congestion to zero, a large latency doesn't hurt bulky transfers at all. Netnews, for example, could be distributed via satellite without hurting anybody's lookers or feelers.
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). 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. --curtis -- Curtis Generous generous () uucom com Phone: (703) 461-1350 UUcom Inc., Suite 250, 4875 Eisenhower Avenue, Alexandria, VA 22304-0797
Current thread:
- Re: connectivity outside the US Geoff Huston (Jun 01)
- <Possible follow-ups>
- Re: connectivity outside the US Circuit (Jun 01)
- Re: connectivity outside the US Todd Graham Lewis (Jun 01)
- Re: connectivity outside the US Hal Murray (Jun 01)
- Re: connectivity outside the US Jakob Faarvang (Jun 01)
- Message not available
- Re: connectivity outside the US Justin W. Newton (Jun 01)
- Re: connectivity outside the US Paul A Vixie (Jun 01)
- Re: connectivity outside the US Deepak Jain (Jun 01)
- Re: connectivity outside the US Curtis Generous (Jun 02)
- Re: connectivity outside the US Miguel A.L. Paraz (Jun 02)
- Re: satellite connections Stephen Sprunk (Jun 02)
- Re: satellite connections Miguel A.L. Paraz (Jun 02)
- Re: connectivity outside the US Alex.Bligh (Jun 01)