Инструкции По Установке для 3com S7906E

 

1-9 

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On different devices, the MEPs belonging to the same MD and MA should be configured with the 

same CCM sending interval.  

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If the device has multiple cards with assistant CPUs, the CCMs will be sent by one of these cards. 

If the card that sends the CCMs is unplugged, another card will take over to send CCMs and CC 

will be re-performed. If all the cards with assistant CPUs are unplugged, MEPs with the interval 

field value set as 3 will stop sending CCMs immediately, while those with the interval field value set 

as 4 to 7 will send CCMs through their host cards and CC over these MEPs will be re-performed.  

 

The relationship between the interval field value in the CCM messages, the interval between CCM 

messages and the timeout time of the remote MEP is illustrated in 

Table 1-2 Relationship of the interval field value, the interval between CCM messages and the timeout 
time of the remote MEP

3 

100 milliseconds 

350 milliseconds 

4 

1 second 

3.5 seconds 

5 

10 second 

35 seconds 

6 

60 seconds 

210 seconds 

7 600 

seconds 

2100 

seconds 

 

In a non-IRF environment with EB or SD cards, the valid value range for the interval field is 3 to 7, while 

in other cases, the valid value range for the interval field is 4 to 7.  

 

The LB function can verify the link state between two ends after CC detects a link fault. 

Before configuring this function, you should first complete the MEP and MIP configuration tasks.  

Follow these steps to configure LB on MEP: 

Enter system view 

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