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Configuring a Virtual Interface

A virtual interface provides the mapping between interface names that appear in the H.248 termination ID in H.248 messages and the following:

The media service (NAT pools) to be used for a gate.
A physical interface on the router.

A voice call always travels between two virtual interfaces. The configuration of the two virtual interfaces is used to determine the media services and logical system interface to be used by the call.

To create a virtual interface and configure the media service and the logical interface (that is, a specific unit on a physical interface), include the virtual-interface statement at the [edit services pgcp] hierarchy level.



[edit services pgcp]

virtual-interface name {

media-service media-service-name;

interface logical-interface-name;



routing-instance instance-name {

service-interface name.number;
}



service-state (in-service
| out-of-service-forced | out-of-service-graceful);
}

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