Configure
Except on the first page, right running head:  
Heading1 or Heading1NewPage text (automatic)
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Alcatel-Lucent
Beta Beta
OmniAccess 5740 Unified Services Gateway Web GUI Users Guide
• Enter the sub interface number in the Interface Name field.
• Enter the IP address and the Mask in the IP Address and Mask fields.
• Enter the DLCI value in the DLCI field. 
• Enter the bandwidth in the Bandwidth field. 
• Enter the fragment size and maximum receive unit (MRU) in the Fragment 
Size and Slippage fields respectively.
• Click OK to save the configuration or click Cancel to cancel the operation.
10. The sub interface thus configured is displayed under the Add New Sub Interface 
& DLCI Configuration table. Repeat this procedure to configure more sub 
interfaces.
11. After configuring the parameters, click Apply to save the Frame Relay 
configuration or click Cancel to cancel the operation.
12. The sub interfaces thus configured is displayed in the Interfaces page.
MLPPP E
NCAPSULATION
To establish communication over a PPP Multilink, an MRRU (Maximum Receive 
Reconstructed Unit) configuration option is sent to the peer during LCP 
negotiation. Optionally, an Endpoint Discriminator Option or SSHNF Option may 
also be sent out. LCP negotiation and optional link authentication take place on 
each bundle link. IPCP negotiation happens over the bundle, meaning IPCP 
packets may be sent on any one of the bundle links. Certain LCP packets like LCP 
Echo-Request and LCP Echo-Reply may be transmitted over the bundle. IP 
packets are sent over the bundle.
The MLPPP packet is encapsulated using an MLPPP header which is different 
from the standard PPP header. It contains a sequence number and additionally 
allows for fragmentation or re-assembly of the packet. MLPPP is also referred to 
as MP or MPPP.
Note: To configure MLPPP encapsulation on an interface, first a bundle interface needs to 
be configured and then MLPPP encapsulation is set on the member interfaces, to link 
them to the bundle. 
Each MLPPP interface is identified by a bundle ID. For more details on MLPPP 
interface configuration, see “Add MLPPP Interface” under Logical Interfaces section.
1. Set the MLPPP encapsulation on the interface by selecting MLPPP radio button 
under Encapsulation. The following page displays the MLPPP parameters: