Colocated Hub » History » Version 2
laforge, 04/21/2022 06:18 PM
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| 3 | 1 | laforge | h1. Colocated Hub |
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| 5 | 2 | laforge | This page exists to collect some planning about the future colocated OCTOI hub, see #5542 |
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| 7 | h2. Physical Setup |
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| 9 | h3. Server (specs) |
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| 11 | High level: |
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| 12 | * Some 2U machine with capacity to host preferably >=2 full-height PCIe cards (TE820). |
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| 13 | * SRV-IO to map TE820 into a VM for easier debugging of potential DAHDI kernel crashes |
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| 14 | * amount of RAM is not very important, the use case has no high RAM requirements |
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| 15 | * CPU is more critical given all of the the byte-shifting and lots of copying / context switches we have to do for each trunk in the current software architecture |
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| 16 | * storage is also not very critical, other than for log files / monitoring |
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| 18 | Candidates: |
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| 19 | * @laforge has experience with Dell PowerEdge R740 (up to 3 full-height slots) |
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| 20 | * @gruetzkopf has suggested HP DL830p G8 (up to 6 full-height slots) |
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| 21 | * @laforge is checking SuperMicro options with riser cards for PCIe |
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| 24 | h3. DAHDI cards |
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| 26 | @laforge has at least two TE820 that can be used for this purpose |
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| 29 | h3. icE1usb |
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| 31 | We need at leaset one icE1usb as a GPS-disciplined clock master. |
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| 33 | We can also use that one to compare physical (icE1usb+TE820) setups against DAHDI-trunkdev. |
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| 35 | We could deploy 1-2 more, just in case. |
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| 38 | h3. RAS / dial-up server |
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| 40 | We should install at least one RAS server next to it, for dial-up modem / isdn termination |
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| 42 | * Definitely the Livingston PM3 currently next to the hub. Needs 1xE1 on the Server |
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| 43 | * Likely also a Cisco ASR5400 @laforge has acquired |
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| 46 | h2. Software |
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| 48 | * Like in the current hub at @laforge's basement, we should run the entire yate / osmo-e1d / dahdi-trunkdev inside a KVM with SRV-IO mapping the PCI devices |
