3com S7906E Instruccion De Instalación

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1-8 
MIPs are generated on each port automatically according to the rules specified in the cfd mip-rule 
command. If a port has no MIP, the system will check the MAs in each MD (from low to high levels), and 
follow the rules in 
 to create or not create MIPs (within a single VLAN): 
Table 1-1 Rules for generating MIP 
MIP exists on low 
level MA 
The cfd mip-rule 
command is 
configured as 
MEP exists on low 
level MA 
Create MIP or not 
Yes 
— 
— 
No 
No No 
Explicit 
Yes Yes 
No 
Default 
— 
Yes 
 
Each of the following actions or cases can cause MIPs to be created or deleted after you have 
configured the cfd mip-rule command: 
Enabling CFD (use the cfd enable command) 
Creating or deleting the MEPs on a port 
Changes occur to the VLAN attribute of a port 
The rule specified in the cfd mip-rule command changes 
Configuring CC on MEPs 
After the CC function is configured, MEPs can send CCMs mutually to check the connectivity between 
them. 
Configuration Prerequisites 
Before configuring this function, you should first complete the MEP configuration. 
Configuring Procedure 
Follow these steps to configure CC on a MEP: 
To do... 
Use the command... 
Remarks 
Enter system view 
system-view 
— 
Configure the interval field 
value in the CCM messages 
sent by MEPs 
cfd cc interval interval-value 
service-instance 
instance-id 
Optional 
By default, the interval filed 
value is 4. 
Enter Ethernet interface view 
interface interface-type 
interface-number
 
— 
Enable CCM sending on a MEP 
cfd cc service-instance 
instance-id mep mep-id enable
Required 
Disabled by default