Colocated Hub » History » Version 12
laforge, 08/29/2022 04:42 PM
1 | 2 | laforge | {{>toc}} |
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2 | |||
3 | 1 | laforge | h1. Colocated Hub |
4 | |||
5 | 4 | laforge | This page exists to collect planning about the future colocated OCTOI hub, see #5542 |
6 | 2 | laforge | |
7 | 4 | laforge | h2. Rackmount units |
8 | 1 | laforge | |
9 | 4 | laforge | h3. Central Office server (2U / 67cm) |
10 | 1 | laforge | |
11 | 4 | laforge | This is a 2U rack-mount server running all the relevant software. |
12 | 1 | laforge | |
13 | 4 | laforge | See [[AVSt_Server]] for more details of the server |
14 | 1 | laforge | |
15 | 4 | laforge | h4. Connections |
16 | 1 | laforge | |
17 | 4 | laforge | This is a 2U rack-mount server with the following connections: |
18 | * Power |
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19 | 10 | laforge | ** 2x AC power connections (redundant PSU) |
20 | 4 | laforge | * Ethernet |
21 | ** 1x RJ45 100-Base-TX BMC |
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22 | ** 2x RJ45 1000-Base-TX |
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23 | * E1 |
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24 | ** 8x E1 to a co-located Cisco AS5400 (see below) |
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25 | ** 1x E1 to a co-located Livingston PM3 (see below) |
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26 | ** 1x E1 to icE1usb/clock-source |
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27 | 1 | laforge | |
28 | |||
29 | 4 | laforge | h3. icE1usb / E1 clock source (1U / 31cm) |
30 | 1 | laforge | |
31 | 4 | laforge | This is a 1U rack mount system containing: |
32 | * a PC-Engines APU3 embedded x86_64 |
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33 | * an [[e1-t1-adapter:ICE40_E1_USB_interface|icE1usb]] with a custom RS422 interface board |
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34 | * a custom rs422 over voltage protection + 12V injection board |
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35 | 1 | laforge | |
36 | 4 | laforge | This icE1usb acts as a GPS-disciplined clock master. However, as no acutal RF GPS signal is available in the data centre, we are using an Ericsson [[ericsson-rbs-6xxx:GPS_02]] attached via ~100m of RS-422. |
37 | 1 | laforge | |
38 | 4 | laforge | h4. Connections |
39 | 1 | laforge | |
40 | 4 | laforge | * Power |
41 | ** 2x AC power connections (1x APU, 1x RS422/GPS) |
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42 | * Ethernet |
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43 | 8 | laforge | ** 1x RJ45 to internal VLAN |
44 | 4 | laforge | * RS422 |
45 | 1 | laforge | ** 1x RJ45 towards GPS02 on the roof |
46 | |||
47 | 4 | laforge | h3. Cisco AS5400 RAS Server (2U / 49cm) |
48 | 1 | laforge | |
49 | 4 | laforge | h4. Connections |
50 | 1 | laforge | |
51 | 4 | laforge | * Power |
52 | ** 2x AC power connection (redundant PSU) |
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53 | * Ethernet |
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54 | ** 1x RJ45 Ethernet (100-Base-TX) to internal VLAN |
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55 | * E1 |
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56 | ** 8x E1 (via break-out cable) to AVSt-Server |
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57 | 7 | laforge | * RS232 |
58 | ** Serial console connection via USB-UART to [[AVSt_Server]] |
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59 | 4 | laforge | |
60 | h3. Livingstion Portmaster 3 (2U / 31cm) |
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61 | |||
62 | h4. Connections |
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63 | |||
64 | * Power |
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65 | ** 1x AC power connection |
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66 | * Ethernet |
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67 | 9 | laforge | ** 1x RJ45 Ethernet (10-Base-TX) [yes, 10MBps] to internal VLAN |
68 | 4 | laforge | * E1 |
69 | ** 1x E1 to AVSt-Server |
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70 | 6 | laforge | * RS232 |
71 | ** Serial console connection via USB-UART to [[AVSt_Server]] |
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72 | 4 | laforge | |
73 | h2. Roof installation |
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74 | |||
75 | |||
76 | On the roof of the data centre, the CAT5 cable with RS422 for the GPS03 arrives. |
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77 | |||
78 | It will be passed through several DIN rail mounted OVP (Over Voltage Protection) circuits before connecting to the actual DIN-rail mounted Ericsson GPS03 |
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79 | |||
80 | The Ericsson GPS03 has a SMA connector, to which a SMA-male to N-Male coaxial cable is attached. |
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81 | |||
82 | A Times Microwave LP-GTR-NFF lightning protector (N-female to N-femaile) is used to pass the coaxial cable through the enclosure |
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83 | |||
84 | An external GPS antenna with N connector is plugged into the LP-GTR-NFF |
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85 | 1 | laforge | |
86 | 5 | laforge | h3. Overview diagram |
87 | 1 | laforge | |
88 | 5 | laforge | This diagram illustrates the parts and connections on the rooftop. Rectangular objects are DIN-rail mounted. |
89 | 1 | laforge | |
90 | 5 | laforge | {{graphviz_link() |
91 | graph G { |
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92 | subgraph cluster_1 { |
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93 | label="Rooftop enclosure"; |
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94 | rj45splitter [label="RJ45 splitter"]; |
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95 | GPS03 [label="Ericsson GPS03", shape=rect]; |
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96 | ovp_rs422_1 [shape=rect]; |
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97 | ovp_rs422_2 [shape=rect]; |
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98 | ovp_rs422_3 [shape=rect]; |
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99 | ovp_12v [shape=rect]; |
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100 | lp [label="LP-GTR-NFF"]; |
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101 | rj45splitter -- ovp_rs422_1; |
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102 | rj45splitter -- ovp_rs422_2; |
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103 | rj45splitter -- ovp_rs422_3; |
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104 | rj45splitter -- ovp_12v; |
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105 | ovp_rs422_1 -- GPS03; |
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106 | ovp_rs422_2 -- GPS03; |
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107 | ovp_rs422_3 -- GPS03; |
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108 | ovp_12v -- GPS03; |
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109 | GPS03 -- lp [label="SMA-male/N-female"]; |
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110 | } |
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111 | antenna [label="GPS Antenna"]; |
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112 | antenna -- lp [label="RG58 white / N-female"]; |
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113 | rack [label="Rack in DC"]; |
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114 | rack -- rj45splitter [label="CAT5"]; |
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115 | } |
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116 | }} |
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117 | 2 | laforge | |
118 | 1 | laforge | h2. Software |
119 | |||
120 | 3 | laforge | * 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 |
121 | |||
122 | |||
123 | h2. Misc / TODO |
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124 | |||
125 | h3. local verification with modem/ISDN-TA |
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126 | |||
127 | It would be great if we could somehow verify local calls via the yate / hub excluding the complexity of the TDMoIP to compare calls without TDMoIP to calls with TDMoIP. |
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128 | |||
129 | Unfortuantely I'm not aware of any really small PBX that would terminate the E1/S2M and offer S0/POTS ports. Adding antoher 3U for a PBX seems excessive. |
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130 | |||
131 | 1 | laforge | Doing calls between PM3 and ASR5400 is of course an option, but ideally we'd have a real physical modem attached via a serial port, and a real HFC-S-USB for test purpose. |
132 | 11 | laforge | |
133 | h2. High-level parameters for data centre |
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134 | |||
135 | * 7U rackspace |
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136 | * 7x AC power outlet |
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137 | * 6x Ethernet switch port (one of which supports 10 MBps!) |
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138 | ** some ports in a new VLAN |
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139 | ** some ports in an existing VLAN of my other servers in Rack 1120 |
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140 | * 1x CAT5 between rack and roof |
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141 | * about 10cm of space on DIN-rail on roof enclosure (to mount OVP + GPS03) |
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142 | |||
143 | h2. Questions |
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144 | 1 | laforge | |
145 | 12 | laforge | * Required antenna cable length between rooftop enclosure and antenna |
146 | * Mechanical antenna mounting details |
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147 | 11 | laforge | * detailed switch port / VLAN config |