According to the network traffic at SLAC Internet gateway (to ESnet),

http://www.slac.stanford.edu/comp/net/external-links/html/SLAC-Internet-Links.html

SLAC is currently using less than 50% of its 2GB (1GB + 1GB) link to 
ESnet. This includes the 150-250 Mbit/s used by ATLAS network test right 
now. So I think it is safe to raise the ATLAS network bandwidth usage to 
400-500 Mbit/s.

The traffic between SLAC and BNL will involve multiple hosts at each end 
so it is likely that traffic will be spread out to the two 1Gb links 
(and we will monitor the load). We can pull out some of our gridFTP 
hosts to reduce the traffic if there are serious impact to other users.

regards,

Wei Yang  |  [log in to unmask]  |  650-926-3338(O)

Yang, Wei wrote:
> I will certainly send notification out in advance of this test. Our goal is to 
> achieve 200MB/sec between SLAC and BNL in the first step. So ideally we want to 
> have a 10Gb network so that we can do more than 50MB/sec. But I do not know when 
> will we have 10Gb. I think we still have a chance to have 10Gb setup before the 
> test. But we can't wait for the upgrade without participating any of such tests. 
> I hope this test, if we have to do it under 1Gb, will not have too much negative 
> impact to the rest of the lab. And I hope this e-mail exchange will serve as a 
> call for 10Gb network upgrade ASAP.
> 
> regards,
> --
> Wei Yang  |  [log in to unmask]  |  650-926-3338(O)  
> 
>> -----Original Message-----
>> From: Gregory P. Dubois-Felsmann [mailto:[log in to unmask]] 
>> Sent: Friday, December 28, 2007 6:51 PM
>> To: Halperin, John H.
>> Cc: Yang, Wei; Cottrell, Les; Buhrmaster, Gary
>> Subject: RE: [Racf-storagemgmt-l] Throughput update
>>
>> Certainly we must be notified before such a test, so that 
>> Wilko and others can properly diagnose any problems it might cause.
>>
>> I would very much prefer to wait for the 10GB upgrade, if possible.
>>
>> Gregory