Date: Thu, 13 Oct 2022 19:11:06 -0500 From: Jason Bacon <bacon4000@gmail.com> To: freebsd-hackers@freebsd.org Subject: Re: is this FreeBSD problem or HP switch Message-ID: <d3cc46e7-3b5a-390f-a837-a3989eefc5dc@gmail.com> In-Reply-To: <586238fe-a9f-94b5-65b6-bc505551e9fb@puchar.net> References: <586238fe-a9f-94b5-65b6-bc505551e9fb@puchar.net>
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On 10/13/22 17:48, Wojciech Puchar wrote: > i have HP-2530-24G switch in home and 3 VLANs. > there was no traffic on 2 of them, one vlan have full bandwitch traffic > from computer A to computer B - at 1000Mbit/s > At this time ping from computer C to computer A (computer C have > 100Mbit/s card) was random between 1 and 1000ms. > > Just limiting artifically speed to 950Mbit/s solved the problem. > > Is this because switch behaves that way or can it be a FreeBSD problem > (all computers runs FreeBSD) > > > I saw an issue some years ago where one of my FreeBSD servers was overwhelming a Cisco switch while pushing files out to HTCondor nodes, causing it to drop packets. Our networks guru confirmed the problem by monitoring the switch. Since no handshaking was possible, I worked around it by throttling the interface on the FreeBSD box, using ipfw if I recall correctly. -- Life is a game. Play hard. Play fair. Have fun.
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