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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
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Appendix F - ERPS Information
Only hardware-based ERPS supports the Fast Link Drop Interrupt feature with a recovery time of 50 milliseconds in a
16-node ring. The distance must be less than 1200 kilometers.
Model Name ERPS Port 1 to 8 Port 9 to 26 Port 27 to 28
DGS-1520-28
Hardware-based V V
Software-based V
Model Name ERPS Port 1 to 4 Port 5 to 26 Port 27 to 28
DGS-1520-28MP
Hardware-based V V
Software-based V
Model Name ERPS Port 1 to 8 Port 9 to 24 Port 25 to 32 Port 33 to 50 Port 51 to 52
DGS-1520-52
Hardware-based V V V
Software-based V V
Model Name ERPS Port 1 to 8 Port 9 to 24 Port 25 to 28 Port 29 to 50 Port 51 to 52
DGS-1520-52MP
Hardware-based V V V
Software-based V V