[Halld-online] Hall D Network Fiber Specifications

[Elliott Wolin]

Hi,

Brent says there are three switches deployed outside of the hall: two in 
the EEL building and one in computer room in the first floor of Cebaf 
Center.  Thus since we need 12 switches in the hall we don't have to 
pull any back yet.

We probably don't need two switches in the EEL building and can 
eventually run longer cables and just use one switch.  And the one in 
the computer room I suspect won't be needed once the crates are all 
moved out.



On 10/14/2013 07:42 PM, Hovane Egiyan wrote:
> Hi Elliott,
>
> We procured total of 15 switches, which would leave us with three 
> switches for the
> counting house and any other test setup. We also procured total of 9 
> terminal servers,
> which will leave one terminal server for the counting house .
>
> As you mentioned, we have not decided where to put the multimode 
> fiber, but I
> think it would be best to land them close to or in the accelerator 
> rack (24 strands).
>
> We need to have 1U fiber panels for these since they will provide 
> enough connection.
>
> Hovanes.
>
>
> On 10/14/2013 6:00 PM, Elliott Wolin wrote:
>> Hi,
>>
>> See this wiki page for a proposal for network fiber and switch locations
>> in Hall D:
>>
>> https://halldweb1.jlab.org/wiki/index.php/Hall_Network_Specifications
>>
>> Mark D and I based this recommendation on the information we were able
>> to collect concerning network needs in the hall.  Please verify we
>> haven't missed anything.  We note that we have no information about some
>> rack areas (see the wiki page), nor do we have any information about
>> where multi-mode fiber connections to the Rack Room are needed (n.b. all
>> telecom fibers in the proposal are single-mode).
>>
>> Once everyone agrees on the number of fibers to run and the fiber patch
>> panel locations we'll work with the Networking group and Facilities to
>> get the fibers installed.  Until then we will implement low-bandwidth
>> interim networking to any area in the hall that needs it.
>>
>> Please get comments back to us ASAP as we hope to begin the procurement
>> process soon.  Even if we can't get a PO through I'm hoping we can get
>> Shields to walk the fiber paths and get us a firm quote.
>>
>> Thanks,
>>
>>       Elliott W and Mark D
>>
>

-- 

				Sincerely,
					Elliott
  

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  Those raised in a morally relative or neutral environment will hold
		    no truths to be self-evident.
				

Elliott Wolin
Staff Physicist, Jefferson Lab
12000 Jefferson Ave
Suite 8 MS 12A1
Newport News, VA 23606
757-269-7365

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