Fault Information Advertisement Between CFM and Other Modules
Fault Information Advertisement Between CFM and Detection Modules
The OAMMGR module associates CFM with detection modules. The detection modules include EFM and interface. Figure 6-14 shows a network on which fault information is advertised between CFM and detection modules.
Table 6-7 describes problems and solutions for fault information advertisement between CFM and detection modules over the path UPE1 -> PE2 -> PE4 -> PE6 -> PE8.
Function Deployment |
Problem |
Solution |
|---|---|---|
CFM is used to monitor the link between UPE1 and PE4. |
Although CFM detects a fault on the link between UPE1 and PE4, CFM cannot notify PE6 of the fault. As a result, network-side traffic is still sent to PE4, interrupting traffic. Although Port1 on PE4 goes Down, Port1 cannot notify CE1 of the fault. As a result, CE1 continues forwarding user traffic to PE4, interrupting traffic. |
Associate CFM with Port1:
The association between CFM and an interface is used to detect faults in an active link of a link aggregation group (LAG) in static LACP or 1:1 active/standby mode. If a fault is detected, a protection switchover is triggered. |