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Ethernet LFM for CCC

In this example, LFM is configured between two PEs (PE1 and PE2) connected using CCC. With LFM in place, a link fault will be detected immediately, instead of depending on routing protocols to find the fault on end-to-end CCC connection. This also helps in detecting the exact failed link instead of only finding that the end-to-end CCC connectivity has failed. Also, because LFM runs at the link-layer level, it does not need a IP address to operate and so can be used where bidirectional fault detection (BFD) cannot. The links running LFM are shown in Figure 14.

Figure 14: Ethernet LFM for CCC

Image g016839.gif

PE1 Router

Configure LFM on the PE1 router with CCC:



[edit]
interfaces ge-1/1/0 {
encapsulation ethernet-ccc;
unit 0;
}

protocols {


oam {


ethernet {


link-fault-management {


interface ge-1/1/0 {
pdu-interval 1000;
pdu-threshold 5;
}


}


}


}


}

PE2 Router

Configure LFM on the PE2 router with CCC:



[edit]
interfaces ge-1/0/0 {
encapsulation ethernet-ccc;
unit 0;
}

protocols {


oam {


ethernet {


link-fault-management {


interface ge-1/0/0 {
pdu-interval 1000;
pdu-threshold 5;
}


}


}


}


}

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