Re: [Xen-users] can connect *from* Windows, can't connect *to* Windows

["Tomasz Chmielewski" <mangoo@xxxxxxxx>]

> On 11/29/06, Tomasz Chmielewski <tch@xxxxxxxxxxxxx> wrote:
>> [...]
>> The other way doesn't work - I can't connect to Windows from dom0, or
>> form
>> any other machine from LAN. The only thing that Windows replies to is
>> arping.
>
> Hmm, then basically your ethernet setup is there and most of the
> routing part, also.
>
> There are some possible sources of errors.
>
> What does your Xen network setup look like? Bridged or routed
> networking? Firewall on the Windows machine?

Shame on me, it was the firewall in Windows 2003 R2 that was enabled... I
though it was disabled by default, and I didn't check it, because VNC
works a bit of crappy (mouse pointer goes as it likes, not as I like).

Still, network on Windows looks problematic:

1. Latency is very big - this is made from domU:

# ping 192.168.111.186
PING 192.168.111.186 (192.168.111.186) 56(84) bytes of data.
64 bytes from 192.168.111.186: icmp_seq=1 ttl=128 time=4.06 ms
64 bytes from 192.168.111.186: icmp_seq=2 ttl=128 time=4.82 ms
64 bytes from 192.168.111.186: icmp_seq=3 ttl=128 time=6.25 ms
64 bytes from 192.168.111.186: icmp_seq=4 ttl=128 time=7.70 ms
64 bytes from 192.168.111.186: icmp_seq=5 ttl=128 time=9.14 ms
64 bytes from 192.168.111.186: icmp_seq=6 ttl=128 time=0.580 ms
64 bytes from 192.168.111.186: icmp_seq=7 ttl=128 time=2.01 ms
64 bytes from 192.168.111.186: icmp_seq=8 ttl=128 time=3.49 ms
64 bytes from 192.168.111.186: icmp_seq=9 ttl=128 time=4.89 ms
64 bytes from 192.168.111.186: icmp_seq=10 ttl=128 time=6.33 ms

--- 192.168.111.186 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9000ms
rtt min/avg/max/mdev = 0.580/4.931/9.144/2.437 ms


For non-HVM guests I have latency of about 0.074 ms.


2. There are slight packet losses:

# ping -c 10000 -f 192.168.111.186
PING 192.168.111.186 (192.168.111.186) 56(84) bytes of data.
................
--- 192.168.111.186 ping statistics ---
10000 packets transmitted, 9984 received, 0% packet loss, time 4708ms
rtt min/avg/max/mdev = 0.295/0.400/9.534/0.345 ms, ipg/ewma 0.470/0.438 ms


For non-HVM guestes I have no packet losses.


But perhaps, it'd be a better idea to ask about it in a separate thread.

-- 
Tomasz Chmielewski
http://wpkg.org



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