rsync is effecting in the DC switch??

[Manuel Kissoyan]

Hi Ben and Chuck, thank you very much for the help, looks like finally 
was a problem in the switch at the datacenter.

Thank you!

Manuel





Benjamin Schweizer wrote:
> Hi Manuel,
>
> at least, this is not a common problem. I'd use tcpdump to see what is
> really happening on your network card; if possible also run tcpdump on
> the receiving machines. This tells you exactly what traffic is on the
> network. If there are any unrequested broadcasts, check the ethernet
> address (mac address) of the packets. You should only receive valid
> broadcasts and traffic that is directed to your server.
> If you receive unicast traffic that is directed to other hosts than
> yours, it is a switching problem. I'd suggest rebooting the switch and
> if possible, upgrading the firmware to the latest release. I expect that
> you have already rebooted the centos box?
>
>
> Greetings
>
> On Tue, Sep 23, 2008 at 12:00:47AM -0300, Manuel Kissoyan wrote:
>   
>> Thanx Ben,
>>
>> But i have really no idea why this is happening, the backup server 
>> crashed and the DC rebuild it with centos 5 (i guess had centos4 
>> before), after the rebuild did start this problem, could be something 
>> with the os version or distro?
>>
>> not sure where to start, the problem is not broadcasting...i mean, the 
>> dc tech told me the following, so the broadcasting is not something that 
>> "normal"....
>>
>> "is broadcasting to all servers connected to that switch right now. It 
>> is not normal for it to be abusing the network and flooding other 
>> servers with unwanted traffic."
>>
>> so any help or idea will be aprecciated.
>>
>>
>> btw, here is the command that i was running in the backup server to pull 
>> the data from the other servers, not sure if it could have any 
>> problem...but i was running the same command without problem before the 
>> backup server rebuild.
>>
>> /usr/bin/rsync -rplogDtzH --stats --delete-during --timeout=500 
>> --exclude-from=/root/rsyncexcludedfiles 
>> --files-from=/root/rsyncincludedfiles -e ssh root at xx.xx.xx.xx:/ 
>> /backup4/server8
>>
>>
>> Thanx in advance!
>>
>> Manuel
>>
>>
>>
>>
>>
>>
>>
>>
>> Benjamin Schweizer wrote:
>>     
>>> Hi Manuel,
>>>
>>> it is unlikely that rsync is causing your trouble as it operates on top
>>> of tcp (osi layer 4); broadcasts are special ethernet packets that are
>>> transmitted on osi layer 2. I think there might be another problem with
>>> your server or with your switch (is it hubbing?). I suggest you talk to
>>> your network admin again or repost this mail into a network list.
>>>
>>>
>>> Greetings
>>> Benjamin
>>>
>>> On Sun, Sep 21, 2008 at 10:16:25PM -0300, Manuel Kissoyan wrote:
>>>  
>>>       
>>>> hi guys, we are using rsycn without problem but today after some 
>>>> problems in one of the servers, the dc tech did find the rsync is 
>>>> effecting in the switch where they have the server connected 
>>>> broadcasting all the ports in the switch at the dc?????
>>>>
>>>> This is what the dc tech said:
>>>>
>>>> "It appears that your server is broadcasting to every port on the switch 
>>>> that you are connected to"
>>>>
>>>> Any idea why this is happening?
>>>>
>>>> Thanx in advance!
>>>>
>>>> im using version 3.0.3  protocol version 30
>>>>
>>>> and im running the command through shell in the destination server 
>>>> (backup server) to pull the files from the other servers:
>>>>
>>>> /usr/bin/rsync -rplogDtzH --stats --delete-during --timeout=500 
>>>> --exclude-from=/rsyncexcludedfiles --files-from=/rsyncincludedfiles -e 
>>>> ssh root at xx.xx.xx.xx:/ /backup/server
>>>>
>>>> Manuel
>>>>
>>>>
>>>>
>>>> -- 
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>>>>    
>>>>         
>>>  
>>>       
>
>