Difference between revisions of "Hall Network Specifications"

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* ROC's each need an RS232 connection to a terminal server, terminal servers require an Ethernet connection.
 
* ROC's each need an RS232 connection to a terminal server, terminal servers require an Ethernet connection.
 
* Each terminal server has xxx ports.
 
* Each terminal server has xxx ports.
 +
* Need direct fiber link to ROC if max bandwidth > 80 MB/s.
 +
* Switches can uplink 1.25 GBytes/sec.
  
  
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{| class="wikitable" style="text-align: center;"
 
{| class="wikitable" style="text-align: center;"
 
|+Hall Fiber Specifications
 
|+Hall Fiber Specifications
! align="center"| Rack !! ROC Connections !! Controls Connections !! Max Bandwidth !! Total Bandwidth !! Fiber Bundle !! Comment
+
! align="center"| Rack !! High-Speed ROC Connections !! Controls Connections !! TS Connections !! Max Single ROC Bandwidth !! Total Bandwidth !! Fiber Bundle !! Switches !! Terminal Servers !! Comment
 
|-
 
|-
|T1 || 1 || 5 || <80 MB/s || 151 MB/s || 12 strand || this is a comment
+
|T1 || 6 || 12 || 6 || <80 MB/s || 151 MB/s || 12 strand || 1 || 1 || Comment
 +
|-
 +
|U1A || 0 || 7 || 6 || 0 || low || none || 1 || 1 || Use fiber patch cable to connect to xxxx
 
|-
 
|-
|Bread ||Pie || || ||
 
 
|}
 
|}

Revision as of 12:09, 14 October 2013

Below we propose a design for fiber connections between the Rack Room and the Hall, and network switch and terminal server placement.

Elliott Wolin, Mark Dalton
11-Oct-2013


Notes

  • Based on 10**8 photons/sec, 200 kHz trigger rate, existing L1 rejection algorithm, block=1 mode, no compression.
  • Ethernet port counts from Fernando's rack layouts and information from Dave Butler concerning other controls requirements.
  • We own about 15 24-port managed switches with 10 GBit/s fiber uplinks, some being used in EEL building and other places.
  • 8-port managed switches with 1 GBit/s fiber uplinks exist.
  • Only managed switches (no hubs!) allowed in hall.
  • Fibers come in bundles of 12 or 24, 2 fibers needed for one uplink.
  • Standard JLab practice is to terminate all fibers in patch panel when bundles installed.
  • Bundle/patch panel installation is expensive, can run much cheaper patch fibers from switch in one rack area to patch panel in nearby rack area.
  • DAQ crates require two Ethernet connections each, one for the ROC and one for the fan tray.
  • ROC's each need an RS232 connection to a terminal server, terminal servers require an Ethernet connection.
  • Each terminal server has xxx ports.
  • Need direct fiber link to ROC if max bandwidth > 80 MB/s.
  • Switches can uplink 1.25 GBytes/sec.


Hall Fiber Specifications
Rack High-Speed ROC Connections Controls Connections TS Connections Max Single ROC Bandwidth Total Bandwidth Fiber Bundle Switches Terminal Servers Comment
T1 6 12 6 <80 MB/s 151 MB/s 12 strand 1 1 Comment
U1A 0 7 6 0 low none 1 1 Use fiber patch cable to connect to xxxx