Interface Stacking; Platform Considerations; Figure 7: Structure Of Mlfr; Chapter 3 Configuring Multilink Frame Relay - Juniper JUNOSE SOFTWARE 11.0.X - LINK LAYER CONFIGURATION GUIDE 4-1-2010 Configuration Manual

The DTE creates a link management interface (LMI) with the network by encapsulating
the Frame Relay frame within an MLFR frame. You assign one or more data link
control identifiers (DLCIs) to a bundle.

Interface Stacking

Because MLFR aggregates multiple link-layer channels onto a single network layer
IP interface, protocol layering within the router is different than it is for nonmultilink
Frame Relay. See Figure 7 on page 135.

Figure 7: Structure of MLFR

The MLFR Link Integrity Protocol runs on each link in a bundle. However, from the
major Frame Relay interface (the bundle) upward, the interface stacking is the same
as for nonmultilink Frame Relay. For example, LMI runs only on the bundle. The
bundle sends and receives all MLFR packets.

Platform Considerations

You can configure MLFR interfaces on the following E Series Broadband Services
Routers:
NOTE: The E120 and E320 Broadband Services Routers do not support configuration
of MLFR interfaces.
ERX1440 router
ERX1410 router
ERX710 router
ERX705 router
ERX310 router
Chapter 3: Configuring Multilink Frame Relay
Platform Considerations
135