On Sun, 2005-08-28 at 21:05 -0400, asterisk wrote: > I am assuming two, couldn't a USB NIC be used? Obviously not gigabit > but can anyone see any problems with that setup? > USB throughput is less than max bandwidth which is what is advertised. Add a hub and it gets even worse. There is a substantial framing overhead for usb.
USB 1.1 has a raw transfer rate of 12Mbps USB 2.0 has a raw transfer speed of 480Mbps I believe the polling of USB devices is slightly more processor intensive than of a pci card, but could be wrong (and then it may just be the drivers that make it appear that way). In theory 100Mbps wont have a problem on a USB 2.0 host, plenty of bandwidth to spare, and depending on application it may be acceptable. I however would not use such a device in a busy data center/colo for fear that someone might unplug it (accidentally or intentionally) since usb doesnt really lock in place. -- Trixter http://www.0xdecafbad.com Bret McDanel UK +44 870 340 4605 Germany +49 801 777 555 3402 US +1 360 207 0479 or +1 516 687 5200 FreeWorldDialup: 635378
signature.asc
Description: This is a digitally signed message part
_______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users