Re: [Xen-users] Problem MTU > 1500

[Stephan Seitz <s.seitz@xxxxxxxxxxx>]

Hi,

if you're sure, the interfaces are all set to 9k, i'ld expect your switch in between your
hosts is not capable of / not cofigured for 9k frames.

I'd only done 9k on  dom0 so far, but for having it available to domU I assume it needs to
be set in a persistant way. If you change your vifX.X interfaces that would be gone
if you shutdown/create your machine, wouldn't it?


Am Freitag, den 20.07.2012, 10:44 +0200 schrieb Mesut Donmez:
>     Hi,
>      
>     I am using XCP version 1.5beta (1.4.90) with for the host the kernel version 2.6.32.12-0.7.1.xs1.4.90.530.170661xen en for the guests reh6.1 as operating system.
>     When we  increase the MTU of the ethX, vifX and xenbrX to 9000 and also for other machines in our test envioranment and we give the command; ping -s 9000 <ip of extern machine> from the guest to an other machine
>     wich is not on the same host we do not get any response.
>     When we give the same command to an other guest on the same host the ping command succeeds. 
>     When we ping from the host to other machines outside the host the ping command is also succeeds.
>      
>     Has somebody ideas what I am doing wrong?
>      
>      
>      
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