Two and three-stroke discovery process for 10G-EPONs
A technology of Ethernet and speed, applied in the field of optical network unit
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[0023] figure 1 A PON with an OLT and three different ONUs is shown.
[0024] The OLT present in the system is a device that supports dual rates (both upstream and downstream channels), where the downstream transmissions in 1G and 10G channels are performed in parallel and independently on different optical signal wavelengths, while the upstream channel is composed of 1G and 10G data rates are shared.
[0025] Three types of ONUs are supported, namely, symmetric 1G / 1G, symmetric 10G / 10G, and asymmetric 10G / 1G. In this configuration, ONUs can be discovered during two-stroke and three-stroke discovery.
[0026] The discovery process operates on figure 2 described in. The messages of three types of ONUs are shown, namely symmetric 1G / 1G, symmetric 10G / 10G and asymmetric 10G / 1G.
[0027] The extended discovery process may look complicated, but its operation is relatively simple to follow.
[0028] First, the OLT-based discovery agent initializes the discovery process by all...
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