Re: [Xen-users] Bad network performances

[Michael South <msouth@xxxxxxxxxx>]

Do you have a MAC or IP conflict? Do "ifconfig -a" on all affected VMs. Check 
if there are any duplications.

Lorenzo Milesi <lorenzo.milesi@xxxxxxxxxx> wrote:

>hi
>
>> The first place I'd look would be the switch. Some switches are set so
>> that if there's arp change on a port, it would re-learn the topology
>> to prevent loop, and possibly causing all traffic to stop being
>> forwarded temporarily.
>
>I tried changing the switch, but sadly this didn't solve the issue. 
>I'm still not totally sure it's Xen related. Another VM, the firewall, running 
>on the same interface where I have problems, doesn't seem to suffer the same, 
>on this subnet. Instead, I'm having issues on another interface, the one 
>facing the router, because I get OpenVPN reset every minute.
>
>Both VMs have very low cpu and network load according to stats, so I'd exclude 
>performance problems. 
>
>Any advice is welcome!
>thanks
>-- 
>Lorenzo Milesi - lorenzo.milesi@xxxxxxxxxx
>
>YetOpen S.r.l. - http://www.yetopen.it/
>Via Carlo Torri Tarelli 19 - 23900 Lecco - ITALY -
>Tel 0341 220 205 - Fax 178 6070 222
>
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>
>-------- D.Lgs. 196/2003 --------
>
>Si avverte che tutte le informazioni contenute in questo messaggio sono
>riservate ed a uso esclusivo del destinatario. Nel caso in cui questo
>messaggio Le fosse pervenuto per errore, La invitiamo ad eliminarlo
>senza copiarlo, a non inoltrarlo a terzi e ad avvertirci non appena
>possibile.
>Grazie.
>
>
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