ccc interface in-label out-label

Function

The ccc interface in-label out-label command configures a remote CCC connection between a local CE and a remote CE that connect to different PEs.

The undo ccc command deletes a remote CCC connection.

By default, no remote CCC connection is created.

Format

ccc ccc-connection-name interface { interface-type1 | interface-type1 interface-number1 } [ interface-number1 ] in-label in-label-value out-label out-label-value { nexthop nexthop-address | out-interface { interface-name2 | interface-type2 interface-number2 } } [ control-word | no-control-word ]

ccc ip-interworking ccc-connection-name interface { interface-type1 | interface-type1 interface-number1 } in-label in-label-value out-label out-label-value { nexthop nexthop-address | out-interface { interface-name2 | interface-type2 interface-number2 } } [ control-word | no-control-word ]

Parameters

Parameter	Description	Value
ccc-connection-name	Specifies a remote CCC connection name. It uniquely identifies a remote CCC connection on a PE.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. The string can contain spaces if it is enclosed in double quotation marks (").
interface interface-type1 interface-number1	Specifies the type and number of an inbound interface.	-
interface-number1	Sets the encapsulation type on the inbound interface to raw.	-
in-label in-label-value	Specifies the value of an in-label.	The value is an integer ranging from 16 to 32783.
out-label out-label-value	Specifies the value of an out-label.	The value is an integer ranging from 0 to 1048575.
nexthop nexthop-address	Specifies the IP address of a next hop.	The value is in dotted decimal notation.
out-interface interface-type2 interface-number2	Specifies the type and number of an outbound interface.	-
control-word	Enables the control word function. By default, the control word function is not enabled.	-
no-control-word	Disables the control word function.	-
ip-interworking	Indicates heterogeneous IP interworking for a remote CCC connection.	-

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2vpn	write

Usage Guidelines

Usage Scenario

CCC VPWS applies to small-scale MPLS networks with simple topologies. Because it does not require signaling negotiation or control packet exchange, CCC consumes fewer resources; however, it must be configured by network administrators, and therefore has poor scalability and is difficult to maintain.

If two CEs connect to different PEs, run the ccc interface in-label out-label command to create remote CCC connections for the two CEs to communicate.

Prerequisites

MPLS L2VPN has been enabled.

Precautions

Remote CCC connections are configured on the PEs connecting to the CEs. A remote CCC connection is unidirectional, and therefore two such connections must be created.
If the outbound interface is a broadcast interface or a P2MP interface , you must configure nexthop to specify a next hop IP address. When static CR-LSPs are configured on the P devices, if the outbound interface is a broadcast or P2MP interface, you must also specify a next hop IP address.
If a sub-interface is bound to a VPWS PW, the sub-interface can be deleted only after the binding is removed.
If a sub-interface is bound to a VPWS PW, you cannot change the encapsulation type of the main interface.
PEs use connection names to identify different CCC connections. The name of a CCC connection can vary on different PEs. If P devices connect to PEs, you must configure static CR-LSPs between the P devices and PEs. Do not configure a CCC connection named type. Otherwise, you cannot run the display vll ccc command to check information about this CCC connection. Note that the out-label of a device is the in-label of the next device.

Example

# Create remote CCC connections between CEs connecting to different PEs.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*PE1] ccc ccc-connection-1 interface GigabitEthernet 0/1/0 in-label 100 out-label 200 nexthop 2.2.2.2