Hello, friend!
On a WDM OTN network, the hard pipe encryption solution based on the AES-256 encryption algorithm is used to encrypt L1 services, achieving low bandwidth usage, low latency, and high reliability of services.
Layer 1 encryption is applicable only when the transmission equipment meets the following device version requirements:
| Product Name | Initial Version |
| OptiX OSN 9800 U series | V100R005C00 |
| OptiX OSN 9800 M series | V100R007C00SPC700 |
| OptiX OSN 9800 UPS | V100R006C00 |
| OptiX OSN 8800/6800 | V100R012C10 |
| OptiX OSN 1800 | V100R005C00 |
For details about L1 service encryption, click:
WDM OTN L1 Service Encryption Feature Guide
Thanks!