Re: is this FreeBSD problem or HP switch

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.

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