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Question

A corporate policy requires PPPoE to be enabled and to maintain a connection with the ISP, even if no interesting traffic exists. Which feature can be used to accomplish this task?

A.	TCP Adjust
B.	Dialer Persistent
C.	PPPoE Groups
D.	Half-bridging
E.	Peer Neighbor Route

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the answers are mixed, do not specify in the comment number or the letter of the answer
please write answer#A instead A, answer#B instead B...

Accepted Answer

Dialer Persistent

Accepted Answer

A new interface configuration command, dialer persistent, allows a dial-on-demand routing (DDR) dialer profile connection to be brought up without being triggered by interesting traffic. When configured, the dialer persistent command starts a timer when the dialer interface starts up and starts the connection when the timer expires. If interesting traffic arrives before the timer expires, the connection is still brought up and set as persistent. The command provides a default timer interval, or you can set a custom timer interval.

To configure a dialer interface as persistent, use the following commands beginning in global configuration mode:

	Command	Purpose
Step 1	Router(config)#interface dialer number	Creates a dialer interface and enters interface configuration mode.
Step 2	Router(config-if)#ip address address mask	Specifies the IP address and mask of the dialer interface as a node in the destinatiopn network to be called.
Step 3	Router(config-if)#encapsulation type	Specifies the ecapsulation type.
Step 4	Router(config-if)#dialer string dial-string class class-name	Specifies the remote destination to call and the map class that defines characteristics for calls to this destination.
Step 5	Router(config-if)#dialer pool number	Specifies the dialing pool to use for calls to this destination.
Step 6	Router(config-if)#dialer-group group-number	Assigns the dialer interface to a dialer group.
Step 7	Router(config-if)#dialer list dialer-group protocol protocol-name {permit \| deny \| list access-list-number}	Specifies an access list by list number or by protocol and list number to define the interesting packets that can trigger a call.
Step 8	Router(config-if)#dialer remote-name user-name	(Optional) Specifies the authentication name of the remote router on the destination subnetwork for a dialer interface.
Step 9	*Router(config-if)#dialer persistent [delay [initial] seconds* \| max-attempts number]**	Forces a dialer interface to be connected at all times, even in the absence of interesting traffic.