cc interval

Function

The cc interval command sets an interval at which continuity check messages (CCMs) are sent.

The undo cc interval command restores the default interval.

By default, the default interval is 1000 milliseconds.

Format

cc interval { 3.3 | 10 | 100 | 1000 | 10000 | 60000 | 600000 }

undo cc interval

Parameters

Parameter	Description	Value
3.3	Indicates that CCMs are set at an interval of 3.3 ms.	-
10	Indicates that CCMs are set at an interval of 10 ms.	-
100	Indicates that CCMs are set at an interval of 100 ms.	-
1000	Indicates that CCMs are set at an interval of 1000 ms.	-
10000	Indicates that CCMs are set at an interval of 10000 ms.	-
60000	Indicates that CCMs are set at an interval of 60000 ms.	-
600000	Indicates that CCMs are set at an interval of 600000 ms.	-

Views

Maintenance entity group view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
tpoam	write

Usage Guidelines

Usage Scenario

CC detects LOC on a link between any MEPs in a MEG.

To set an interval at which CCMs are sent, run the cc interval command. If a MEP does not receive CCMs from its RMEP within a period of 3.5 times a specified interval, the connectivity between the MEP and its RMEP fails.

Optional CCM transmission intervals and their usage scenarios are as follows:

interval is 3.3 ms: 300 frames are sent per second. This interval is recommended for protection switching.
interval is 10 ms: 100 frames are sent per second.
interval is 100 ms: 10 frames are sent per second. This interval is recommended for performance monitoring.
interval is 1000 ms: 1 frame is sent per second. This interval is recommended in fault management.
interval is 10000 ms: 6 frames are sent per minute.
interval is 60000 ms: 1frames are sent per minute.
interval is 600000 ms: 6 frames are sent per hour.
Select a proper CCM transmission interval to meet CC application requirements.

Prerequisites

The ME of the MEG has been bound to a tunnel.

Precautions

If CC has been enabled, canceling the CCM receiving function is recommended before you run the cc interval command to prevent CCM misreporting.
The intervals configured on a MEP and its RMEP must be the same; otherwise, CC fails.

Example

# Set the interval at which CCMs are sent to 100 ms in a MEG named test.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] interface GigabitEthernet 0/1/0.1
[*HUAWEI-GigabitEthernet0/1/0.1] vlan-type dot1q 1
[*HUAWEI-GigabitEthernet0/1/0.1] mpls static-l2vc destination 4.4.4.4 400 transmit-vpn-label 100 receive-vpn-label 200
[*HUAWEI-GigabitEthernet0/1/0.1] quit
[*HUAWEI] mpls-tp meg test
[*HUAWEI-mpls-tp-meg-test] me l2vc peer-ip 4.4.4.4 vc-id 400 vc-type vlan mep-id 1 remote-mep-id 2
[*HUAWEI-mpls-tp-meg-test] cc interval 100