Difference between revisions of "Hall Network Specifications"
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* Ethernet port counts from Fernando's rack layouts and information from Dave Butler concerning other controls requirements. | * 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. | * We own about 15 24-port managed switches with 10 GBit/s fiber uplinks, some being used in EEL building and other places. | ||
| + | * Switches can uplink 1.25 GBytes/sec. | ||
* 8-port managed switches with 1 GBit/s fiber uplinks exist. | * 8-port managed switches with 1 GBit/s fiber uplinks exist. | ||
* Only managed switches (no hubs!) allowed in hall. | * Only managed switches (no hubs!) allowed in hall. | ||
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* 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. | * 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. | * DAQ crates require two Ethernet connections each, one for the ROC and one for the fan tray. | ||
| + | * Some ROC's are only used for control, not DAQ (e.g. BCAL LED Pulser). | ||
* 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. | ||
| − | * | + | * Can run copper RS232 patch cable from one rack area to terminal server in nearby rack area. |
| − | * | + | * Will eventually need direct fiber link to ROC if max bandwidth > 80 MB/s, assuming 10**8 photons/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 !! | + | ! align="center"| Rack !! DAQ Connections !! Controls Connections !! TS Connections !! Max Single ROC Bandwidth !! Total Uplink Bandwidth !! Fiber Bundle !! Switches !! Terminal Servers !! Comment |
|- | |- | ||
|T1 || 6 || 12 || 6 || <80 MB/s || 151 MB/s || 12 strand || 1 || 1 || Comment | |T1 || 6 || 12 || 6 || <80 MB/s || 151 MB/s || 12 strand || 1 || 1 || Comment | ||
|- | |- | ||
| − | |U1A || 0 || 7 || | + | |U1A || 0 || 7 || 1 || 0 || low || none || 1 || 0 || Fiber patch to xxxx, TS patch to yyyy |
|- | |- | ||
|U1B || 5 || 7 || 6 || 0 || low || none || 1 || 1 || Use fiber patch cable to connect to xxxx | |U1B || 5 || 7 || 6 || 0 || low || none || 1 || 1 || Use fiber patch cable to connect to xxxx | ||
Revision as of 12:20, 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.
- Switches can uplink 1.25 GBytes/sec.
- 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.
- Some ROC's are only used for control, not DAQ (e.g. BCAL LED Pulser).
- ROC's each need an RS232 connection to a terminal server, terminal servers require an Ethernet connection.
- Each terminal server has xxx ports.
- Can run copper RS232 patch cable from one rack area to terminal server in nearby rack area.
- Will eventually need direct fiber link to ROC if max bandwidth > 80 MB/s, assuming 10**8 photons/sec.
| Rack | DAQ Connections | Controls Connections | TS Connections | Max Single ROC Bandwidth | Total Uplink 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 | 1 | 0 | low | none | 1 | 0 | Fiber patch to xxxx, TS patch to yyyy |
| U1B | 5 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| U1C | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| U1D | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| N1 | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| S1 | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| US1 | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| U2A | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| U2B | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| D2A | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| D2B | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
| UN1 | 0 | 7 | 6 | 0 | low | none | 1 | 1 | Use fiber patch cable to connect to xxxx |
