Link Layer Discovery Protocol for Ethernet-over-OTN
LLDP is a link layer protocol that allows NCS 4000 devices to transmit and receive device information from its neighbor devices connected through the client ports 0 to 9 that support Ethernet over OTN configuration and the package interfaces of the NCS4K-4H-OPW-QC2 line card.
Some of the details that can be sent and gathered by NCS 4000 if LLDP is enabled are:
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System name and description
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Port name and description
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MAC address and IP address
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Capabilities of the device