3Com S7902E, Configuration Manual

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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 Table 1-1 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:
z
Enabling CFD (use the cfd enable command)
z
Creating or deleting the MEPs on a port
z
Changes occur to the VLAN attribute of a port
z
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