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MP overview
Multilink PPP (MP) enables you to bind multiple PPP links into one MP bundle for increasing
bandwidth. After receiving a packet that is larger than the minimum packet size for fragmentation,
MP fragments the packet and distributes the fragments across multiple PPP links to the peer end.
After the peer end receives these fragments, it reassembles them into one packet and passes the
packet to the network layer.
In addition to increasing bandwidth, MP also provides link-layer load sharing, which can implement
backup. MP fragmentation can reduce transmission delay, especially on low-speed links.
MP is available to all physical or virtual interfaces with PPP encapsulation enabled, including serial,
ISDN BRI/PRI, and PPPoX (PPPoE, PPPoA, or PPPoFR) interfaces. In MP configuration, however,
it is preferred that an MP bundle include only one type of interface.
Configuring PPP
PPP configuration task list
Task Remarks
Enabling PPP encapsulation on an interface
Required.
Configuring PPP authentication
Optional.
Configuring the polling interval
Optional.
Configuring PPP negotiation
Optional.
Enabling PPP link quality control
Optional.
Enabling PPP traffic statistics collection
Optional.
Enabling PPP encapsulation on an interface
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Enable PPP encapsulation
on the interface.
link-protocol
ppp
Optional.
By default, all interfaces except
Ethernet interfaces and VLAN
interfaces use PPP as the link
layer protocol.
Configuring PPP authentication
You can configure several authentication modes simultaneously. In LCP negotiation, the
authenticator negotiates with the supplicant in the sequence of configured authentication modes until
the LCP negotiation succeeds. If the response packet from the supplicant carries a recommended
authentication mode, the authenticator directly uses the authentication mode if it finds the mode
configured.
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