If two DCC timers are configured on the physical and dialer interfaces at the same time, which one takes effect

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The timers defined by dialer timer idle and dialer timer wait-carrier commands take effect on dialer interfaces.

The timers defined by dialer timer enable and dialer timer compete commands take effect on physical interfaces.

Other related questions:
Why is the dialer interface still Up when the physical status of the dialer interface is Down
When the physical interface that is not connected to a cable is Down, the dialer interface displays Snoofing Up. This situation is normal. You can run the dialer number 1 autodial command so that the dialer interface changes as the physical interface.

What are the differences between a dialer interface and a physical interface
For C-DCC, a dialer interface may contain multiple physical interfaces, but a physical interface belongs to only one dialer interface and uses one set of dialer parameters. For RS-DCC, a dialer interface may contain multiple physical interfaces, and a physical interface can belong to multiple dialer interfaces.

Can I configure resource-share DCC on physical interfaces
No, cannot configure resource-share DCC on physical interfaces.

When you configure the set priority dscp and remark dscp commands simultaneously, which one takes effect
set priority dscp command sets the DSCP priority of protocol packets sent by the device. To change the DSCP priority of protocol packets, you can also configure a traffic policy, define remark dscp for protocol packets in the traffic policy, and apply the traffic policy to the outbound direction of an interface.

If the ip soft-forward enhance enable command has been executed to enable the enhanced IP forwarding function, the remark dscp command takes effect. If the ip soft-forward enhance enable command is not used, the set priority command takes effect.


Which interfaces support DCC calls
The following interfaces support Dial Control Center (DCC) calls: synchronous serial interfaces, primary rate interfaces (PRIs), and dialer interfaces. In V200R001C01, asynchronous serial interfaces , 3G interfaces and BRI interfaces also support DCC calls in addition to the preceding interfaces. In V200R005C00, LTE interfaces also support DCC calls in addition to the preceding interfaces

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