3Com 10014299 manual MP Overview, Configure PPP, For detailed description of PPP, refer to RFC1661

MP Overview 167

Figure 49 Diagram of PPP negotiation phases

Dead UP Establish OPENED Authenticate

FAIL

DOWN

Terminate

FAIL

SUCCESS/NON

CLOSING

Network

	For detailed description of PPP, refer to RFC1661.
MP Overview	MP protocol (PPP Multilink protocol) can bind multiple PPP links, so as to increase
	bandwidth. MP protocol can fragment large packets, and then the fragmentation
	will be sent to the same destination through different PPP links, so as to decrease
	the transmission time of large packets.
	The negotiation process in MP mode is as follows (e.g: establishing MP in the
	virtual interface template):

1Detect whether the interface of the peer works in MP mode. First begin LCP negotiation with the peer, negotiating about ordinary LCP parameters and verify whether the interface of the peer works in MP mode. If the peer does not work in MP mode, begin NCP negotiation and do not bundle MP.

2Bind the interface to virtual template interface. This can be done in the following two ways: Bind directly and bind according to username or endpoint. In the former way, the router does not detect the username and endpoint, and binds the interface to a specified virtual template interface. In the latter way, the router binds the interface to the virtual template interface according to the username or endpoint.

3Perform NCP negotiation. After the interface is bound to a virtual template, the router will begin NCP negotiation with the NCP parameters for this virtual template (such as IP address). The NCP parameters configured at the physical interface are not functional. If NCP negotiation is successful, MP link can be established, to transport data with wider bandwidth.

Configure PPP PPP configuration includes:

■Configure the link layer protocol of the interface to PPP

■Configure PPP authentication

■Configure AAA authentication and accounting parameter of PPP

■Configure PPP negotiation parameter

■Configure PPP compression

■Configure PPP link quality monitoring

1Configure the Link Layer Protocol of the Interface to PPP Perform the following configuration in the interface view.