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7 Class C/D Boundary Clocks (T-BCs) are being used to meet the strict time synchronization requirements needed by modern, highly time-sensitive networks, such as 5G.
8 While several metrics have defined limits for Class C T-BCs in ITU-T G.8273.2, giving a clear overview of which requirements need to be met, this is not yet the case for Class D. Only one requirement is specified in ITU-T G.8273.2, section 7.1, table 7-2: a low-pass filtered maximum absolute time error of (max|TE,,L,,| ≤ 5 ns).
9 The performance of the devices this year showed improvement over those tested in previous years: every T-BC tested this year passed the Class D performance limit of (max|TE,,L,,| ≤ 5 ns) with ease.
10 For the first time at EANTC, we also tested Time Synchronization over 800GE links for the Juniper PTX10002-36QDD using the Calnex Paragon-Neo S, which passed the Class D conformance test successfully.
11 Additionally, all devices also passed the Class C conformance test this year.
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13 [[Figure 100: Conformance Class C/D Testing - Setup>>image:434069186562949121_5.07-5.08.png||alt="Figure 100" width="550"]]
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15 The setup of both test cases consisted of an emulated Grandmaster (T-GM ) and an emulated Slave Clock (SC), with the T-BC under test being located in between them.
16 While these tests were not interoperability tests, they were still of utmost importance as further tests require either the Class C or Class D qualifications.
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18 {{container cssClass="tc-role-table"}}
19 (% class="table-bordered" %)
20 |=T-BC-1|=T-GM-A
21 |Juniper PTX10002-36QDD|Calnex Paragon-neo S
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23 Table 55: Conformance Test Telecom Boundary Clock Class C/D - Class D Conformance Test - 800G Port Speed
24 {{/container}}
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26 {{container cssClass="tc-role-table"}}
27 (% class="table-bordered" %)
28 |=T-BC-1|=T-GM-A
29 |Arrcus S9600-72XC|Calnex Paragon-neo PAM4
30 |Ciena 5134|Keysight Time Sync Analyzer
31 |Ericsson Router6676|Keysight Time Sync Analyzer
32 |Huawei ATN 910D-A|Keysight Time Sync Analyzer
33 |Juniper ACX7024|Keysight Time Sync Analyzer
34 |Juniper ACX7100-32C|Keysight Time Sync Analyzer
35 |Juniper ACX7348|Keysight Time Sync Analyzer
36 |Juniper MX10004|Keysight Time Sync Analyzer
37 |Juniper MX304|Keysight Time Sync Analyzer
38 |Juniper PTX10002-36QDD|Keysight Time Sync Analyzer
39
40 Table 56: Conformance Test Telecom Boundary Clock Class C/D - Class D Conformance Test - 100G Port Speed
41 {{/container}}
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43 {{container cssClass="tc-role-table"}}
44 (% class="table-bordered" %)
45 |=T-BC-1|=T-GM-A
46 |Arrcus S9600-72XC|Calnex Paragon-neo PAM4
47 |Ciena 5134|Keysight Time Sync Analyzer
48 |Ciena 5134|Calnex Paragon-neo PAM4
49 |Ericsson Router6671|Calnex Paragon-neo PAM4
50 |Ericsson Router6676|Keysight Time Sync Analyzer
51 |H3C S12500R-48Y8C|Keysight Time Sync Analyzer
52 |H3C S12500R-48Y8C|Calnex Paragon-neo PAM4
53 |Huawei ATN 910D-A|Keysight Time Sync Analyzer
54 |Microchip TimeProvider® 4500|Calnex Paragon-neo PAM4
55
56 Table 57: Conformance Test Telecom Boundary Clock Class C/D - Class D Conformance Test - 10G Port Speed
57 {{/container}}
58
59 {{container cssClass="tc-role-table"}}
60 (% class="table-bordered" %)
61 |=T-BC-1|=T-GM-A
62 |Ericsson Router6671|Calnex Paragon-neo PAM4
63 |Ericsson Router6676|Keysight Time Sync Analyzer
64 |H3C S12500R-48Y8C|Keysight Time Sync Analyzer
65
66 Table 58: Conformance Test Telecom Boundary Clock Class C/D - Class D Conformance Test - 25G Port Speed
67 {{/container}}
68
69 {{container cssClass="tc-role-table"}}
70 (% class="table-bordered" %)
71 |=T-BC-1|=T-GM-A
72 |Arrcus S9600-72XC|Keysight Time Sync Analyzer
73 |Ciena 5134|Keysight Time Sync Analyzer
74 |Ericsson Router6676|Keysight Time Sync Analyzer
75 |H3C S12500R-48Y8C|Keysight Time Sync Analyzer
76 |Huawei ATN 910D-A|Keysight Time Sync Analyzer
77
78 Table 59: Conformance Test Telecom Boundary Clock Class C/D - Class C Conformance Test - 10G Port Speed
79 {{/container}}
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81 {{container cssClass="tc-role-table"}}
82 (% class="table-bordered" %)
83 |=T-BC-1|=T-GM-A
84 |Arrcus S9600-72XC|Keysight Time Sync AnalyzerC
85 |Ciena 5134|Keysight Time Sync Analyzer
86 |Ciena 5134|Keysight Time Sync Analyzer
87 |H3C S12500R-48Y8C|Keysight Time Sync Analyzer
88 |Huawei ATN 910D-A|Keysight Time Sync Analyzer
89
90 Table 60: Conformance Test Telecom Boundary Clock Class C/D - Class C Conformance Test - 100G Port Speed
91 {{/container}}
92
93 {{container cssClass="tc-role-table"}}
94 (% class="table-bordered" %)
95 |=T-BC-1|=T-GM-A
96 |Ericsson Router6671|Keysight Time Sync Analyzer
97 |H3C S12500R-48Y8C|Keysight Time Sync Analyzer
98 |Microchip TimeProvider® 4500|Keysight Time Sync Analyzer
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100 Table 61: Conformance Test Telecom Boundary Clock Class C/D - Class C Conformance Test - 25G Port Speed
101 {{/container}}
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