[Winpcap-users] WinPcap, VMWare and Packet Loss

[Max WhoTheHellCares]

Ok, tomorrow I'm going to try VM 6.x + WinPcap 4.0.x + VMWare Tools.
Thanks everyone, I'll keep you updated.

2009/3/4 Gianluca Varenni <gianluca.varenni at cacetech.com>:
>
> ----- Original Message -----
> From: "Max WhoTheHellCares" <krakazzyabra at gmail.com>
> To: <winpcap-users at winpcap.org>
> Sent: Wednesday, March 04, 2009 10:01 AM
> Subject: Re: [Winpcap-users] WinPcap, VMWare and Packet Loss
>
>
>> Hi,
>>
>> The NICs are 1Gb, but my program's throughput is nearly 100Mb.
>
> The virtual ones are probably 100Mbps, right?
>
>> I'm not sure if i installed VMWare tools... could it possibly improve
>> current situation ?
>
> Definitely. They are optimized to work in a virtual environment.
>
> GV
>
>>
>> Thanks!
>>
>> 2009/3/4 Gianluca Varenni <gianluca.varenni at cacetech.com>:
>>> What is the traffic rate we are talking about?
>>> Also, have you installed the VMware tools in the guest?
>>>
>>> Have a nice day
>>> GV
>>> ----- Original Message -----
>>> From: "Max WhoTheHellCares" <krakazzyabra at gmail.com>
>>> To: <winpcap-users at winpcap.org>
>>> Sent: Tuesday, March 03, 2009 12:45 PM
>>> Subject: Re: [Winpcap-users] WinPcap, VMWare and Packet Loss
>>>
>>>
>>> Thanks for the answers!
>>>
>>> I upgraded winpcap to 4.0.1 - nearly 10% packets are still lost...
>>>
>>> I'm using VMWare Workstaion 5.5.3 ,though i install Win2k3 Server on
>>> it. And VMWares are installed on physical servers running Win2k3
>>> Server... Could that be a problem ?
>>> Do I need VMWare Server edition instead ?
>>>
>>> Thanks again!
>>>
>>> 2009/3/3 Alan Jay Weiner <a.weiner at valid8.com>:
>>>> As Gianluca posted, please upgrade to a more recent version of WinPcap.
>>>>
>>>> I am using VMware Workstation and WinPcap 4.0.2 without any packet loss
>>>> problem.
>>>>
>>>> Currently I'm using Workstation 6.5; I have used previous 6.x versions
>>>> in
>>>> the past.
>>>>
>>>> I use several different configurations, including virtual NICs bridged
>>>> to
>>>> physical adapters on the host, USB adapters (Linksys and Belkin)
>>>> connected
>>>> directly to the virtual machine, and virtual NICs on virtual LANs within
>>>> VMware.
>>>>
>>>> We do VoIP testers and emulators - I do all my development in VMs, and
>>>> frequently test between my VM and emulators running in other VMs, or
>>>> between
>>>> my VM and real (VoIP) hardware.
>>>>
>>>> - Al Weiner -
>>>>
>>>>
>>>> ----------------------------------------------------------------------------
>>>> Alan Jay Weiner / Valid8.com, Inc. - Conform, Perform & Excel(tm)
>>>> 500 W Cummings Park, Suite #2700, Woburn, MA 01801, USA
>>>> a.weiner at valid8.com / Tel:+1-781-938-1221 x112, Fax +1-781-207-0550
>>>> http://www.VALID8.com
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: winpcap-users-bounces at winpcap.org
>>>> [mailto:winpcap-users-bounces at winpcap.org] On Behalf Of Max
>>>> WhoTheHellCares
>>>> Sent: Monday, March 02, 2009 3:00 PM
>>>> To: winpcap-users at winpcap.org
>>>> Subject: [Winpcap-users] WinPcap, VMWare and Packet Loss
>>>>
>>>> Hi everybody!
>>>>
>>>> I have recently stumbled upon a problem, which renders my project
>>>> nearly useless....
>>>>
>>>> I have 2 VMs on two physical servers, each one runs Win2k3 Server. My
>>>> server-side program sends packets using WinPcap, the client-side gets
>>>> them using WinPcap (lets call them Tx and Rx respectively).
>>>> Up till now i worked without VMs - Win2k3 Server was installed on both
>>>> physical servers. My project worked like it should - without losses
>>>> during packet transfer from server to client.
>>>>
>>>> Now, as i started using VMs (Virtual NIC is BRIDGED to physical), i
>>>> get packet loss ~11% in case Tx AND Rx are installed on VMs.
>>>> If i install only one side (Tx OR Rx) on VM and the other one on
>>>> physical disk(on another server), packet loss is still present, but
>>>> varies depending on which side (Tx or Rx) is installed on VM. It goes
>>>> like this:
>>>>
>>>> Transmitter Receiver %packet loss
>>>> -------------------------------------------------------------
>>>> TX RX 0%
>>>> TX VM_RX 10%
>>>> VM_TX RX 0.1%
>>>> VM_TX VM_RX 11%
>>>>
>>>> where TX, RX - installed on physical machines
>>>> VM_TX, VM_RX - installed on virtual machines.
>>>>
>>>> How it works: having done extensive debug on the Tx side,
>>>> pcap_sendpacket(...) sends everything without errors. However the Rx
>>>> side still registers packet loss. BTW, WinPcap version is 3.1beta.
>>>>
>>>> Please, if someone has a clue of why this happens, share your
>>>> thoughts, my project is on-hold ATM.
>>>>
>>>> Thanks in advance.
>>>> _______________________________________________
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>>>> Winpcap-users at winpcap.org
>>>> https://www.winpcap.org/mailman/listinfo/winpcap-users
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