This chapter contains a configuration example of Ethernet Bandwidth Notification (ETH-BN).

ETH-BN protocol is defined in ITU-T Y.1731. ETH-BN is used by a server MEP to signal the server layer link bandwidth in the transmit direction to a MEP at the client layer, for example when the server layer runs over a microwave link which has the capability to adapt its bandwidth according to the prevailing atmospheric conditions.

On receiving frames with ETH-BN information, the client layer MEP can use bandwidth information to adjust service policies, e.g., to reduce the rate of traffic being directed towards the degraded link.

A client MEP continues to receive periodic frames with ETH-BN information including currently available bandwidth until the full bandwidth is restored at server MEP. In addition, periodic frames with ETH-BN information may optionally be receive when there is no degradation or when the bandwidth degrades to 0.

OcNOS supports only ETH-BN PDU reception and received PDU is processed as per below FSM: