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During the evaluations of 400G ZR and ZR+ technology, vendor interoperability was also performed on 400G and 100G ports. The 400G links used DP-16QAM line coding, whereas the 100G employed DP-QPSK. All were at the 193.700 TH carriers frequency, with the FEC settings adjusted as appropriate according to OpenZR+ or Standard ZR parameters. |
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We assessed end-to-end link quality by running 10G IMIX traffic across each back-to-back connection and monitoring for packet loss, CRC framing errors, and stability of BGP sessions. The links came online, and control protocols converged without issue. This test shows that 400ZR/ZR+ modules are interoperable in mixed setups, from 100G (DP-QPSK) to 400G (DP-16QAM). |
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[[Figure 84: Optical Networks Using 400GbE ZR/ZR+ Optical Plugs>>image:433705807448637441_SRMPLS-12-400GZR-Generic-10-v1.png||alt="Figure 84" width="550"]] |
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The results highlight 400ZR/ZR+ as a key technology for high-capacity, greater-distance connections and data center interconnects. A slight flexibility in running different line rates and FEC modes would allow the operator to adapt the optical interface to meet a specific need-whether it is optimized for efficiency on metro-to-long-haul links or simply for easy interconnection on short-reach connections in data centers. |
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|=**DUT1**|=**Pluggable**|=**DUT2**|=**Pluggable**|=**Operating Modes** |
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|Juniper PTX10002-36QDD|ZR+/Juniper|Ribbon NPT-2100|ZR+/Ribbon|1x400, 1x100 |
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|Ciena 8140 Coherent Metro Router|ZR+/Ciena|Ribbon NPT-2100|ZR+/Ribbon|1x400 |
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|Ciena 8140 Coherent Metro Router|ZR+/Ciena|Juniper PTX10002-36QDD|ZR+/Juniper|1x400 |
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Table 28: Optical Networks Using 400GbE ZR/ZR+ Optical Plugs |
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Ciena 8140 Coherent Metro Router, |
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Juniper PTX10002-36QDD, |
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Ribbon NPT-2100 |
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)))|Keysight IxNetwork |
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Table 29: Optical Networks Using 400ZR/ZR+ -800ZR/ZR+ Optical Plugs - 400G+ZR |
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|[[< Previous>>doc:Liveness of SR Policy using Seamless BFD]]|[[Next ~>>>doc:SR-MPLS Flexible Algorithm]] |
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