Itu-t y.1731

In the received path, with active-standby links of AE interfaces, all the child links are programmed in the input list using next-hops to redirect the packets to the anchor FPC after copying the counters in the Packet Forwarding Engine. All other computation and data are software-based. For Ethernet loss measurement on AE interfaces, with the active-standby mode of the interfaces, transmission and reception of PDUs is always through the Packet Forwarding Engine that hosts the active link.

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For Ethernet loss measurement on AE interfaces, with the active-standby mode of the interfaces, transmission and reception of PDUs is always through the Packet Forwarding Engine that hosts the active link.

Only hardware-based timestamping is supported because it is performed in the received path of the protocol data unit PDU packets, whereas software-based timestamping needs to be performed on the transmitted path and is not supported.

In the received path, with active-standby links of AE interfaces, all the child links are programmed in the input list using next-hops to redirect the packets to the anchor FPC after copying the counters in the Packet Forwarding Engine.

The enhanced LAG capability is enabled by default when you configure enhanced IP services mode by including the network-services enhanced-ip statement at the [edit chassis] hierarchy level.

In addition, periodic packet management PPM handles time-sensitive periodic processing and performs such processes as sending process-specific packets and gathering y.171. For one-way delay measurement 1DMthe system clocks of the initiator MEP that transmits a request frame and the responder MEP that receives a reply frame need to be synchronized.

Starting with Ith-t OS Relase Starting with Junos OS Release For Ethernet loss measurement to work properly, you must disable the enhanced LAG functionality by entering the set chassis aggregated-devices disable-lag-enhanced statement. These performance monitoring functionalities are supported on the following platforms: All other computation and data are software-based.

To enable the distribution of CFM sessions and to operate in centralized mode, include the ppm delegate-processing statement at the [edit yy.1731 ppm] hierarchy level. In the transmission path, with active-standby links of AE interfaces, whenever the active child link fails, if the standby link is non-local, the packets are redirected to the new active link.

Y : OAM functions and mechanisms for Ethernet based networks

These performance monitoring functionalities are supported on the following platforms:. Also, connectivity fault management CFM sessions established on the AE interfaces itut be distributed to the Packet Forwarding Engine, apart from being handled on the Routing engine. If the standby link is on same Packet Forwarding Engine as the active link, then the counters are not reset because the counters are read on the local Packet Forwarding Engine memory and to prevent the other end of the session to treat new Packet Forwarding Engine counters as losses owing to reset of the counters.

For the y.7131 mode of the AE interfaces, you can configure a maximum of only two member links. For Ethernet delay measurement, hardware-assisted timestamping is supported on AE interfaces, similar to the support that exists on non-AE interfaces.

Connectivity fault management CFM sessions operate in centralized mode over AE interfaces by default.

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