Falcon M-Class | User Guide
4.22.5
Ethernet Continuity Check
Ethernet Continuity Check (ETH-CC) is used for fault detection and protection switching.
It is used to detect Loss of continuity (LOC) between any pair of MEPs in a MEG.
A MEP periodically transmits CCM frames according to the configured transmission period.
A MEP periodically transmits CCM frames as often as the configured transmission
period. as follows:
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3.33 ms: Default transmission period for protection switching application
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10 ms: (Transmission rate of 100 frames / sec)
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100 ms: Default transmission period for performance monitoring application
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1 s: Default transmission period for fault management application
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10 s: (Transmission rate of 6 frames / minute)
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1 min: (Transmission rate of 1 frame / minute)
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10 min: (Transmission rate of 6 frames / hour)
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When a MEP does not receive CC information from a peer MEP, within an interval of 3.5
•
times the CC transmission period, it detects loss of continuity (LOC) to that peer MEP.
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When a MEP receives a CC frame the flowing is being checked:
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MEG Level corresponds to its own MEG Level
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MEP ID is in the list of peers
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If RDI flag is set, then RDI alarm is raised
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The period is same as set for the transmission
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VLAN Priority is correct
Use the following displays in order to implement MEP configuration and CC Fault Conditions.
At the beginning, you need to use and configure the MEG End-Point instance (refer to the previous
section 4.15.3) and afterwards configure the following displays.
Figure 4-184: MEP Configuration displays
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