Re: PAUSE support for Ethernet interfaces ?

2008-03-03 Thread Tom Samplonius
- Kurt Jaeger [EMAIL PROTECTED] wrote: Hi! I'm researching the topic of PAUSE counters (receiving side) for FreeBSD systems. That's a sort of flow control with ethernet, see e.g.: http://www.techfest.com/networking/lan/ethernet3.htm#3.2.1 Cisco switches seem to receive and count

Re: PAUSE support for Ethernet interfaces ?

2008-03-03 Thread Bruce M. Simpson
Tom Samplonius wrote: FreeBSD does not send PAUSE frames, but most of the NICs out there will process received PAUSE frames. However ethernet flow control is mainly useful on the switches anyways. Switches these day (*) have small buffers (sometimes just a shared 3MB buffer for 24

Re: PAUSE support for Ethernet interfaces ?

2008-03-03 Thread Zaphod Beeblebrox
On Mon, Mar 3, 2008 at 12:18 PM, Bruce M. Simpson [EMAIL PROTECTED] wrote: There are switch ASICs out there which implement upstream bandwidth limiting on ports by sending the PAUSE frame. I believe thompsa@ recently committed a fix to if_bridge to allow it to ignore PAUSE frames for the

Re: PAUSE support for Ethernet interfaces ?

2008-03-02 Thread Pyun YongHyeon
On Fri, Feb 29, 2008 at 11:41:07AM +0100, Kurt Jaeger wrote: Hi! I'm researching the topic of PAUSE counters (receiving side) for FreeBSD systems. That's a sort of flow control with ethernet, see e.g.: http://www.techfest.com/networking/lan/ethernet3.htm#3.2.1 Cisco

PAUSE support for Ethernet interfaces ?

2008-02-29 Thread Kurt Jaeger
Hi! I'm researching the topic of PAUSE counters (receiving side) for FreeBSD systems. That's a sort of flow control with ethernet, see e.g.: http://www.techfest.com/networking/lan/ethernet3.htm#3.2.1 Cisco switches seem to receive and count them, which helps to find short-term (seconds)