Interface Stacking; Platform Considerations; Figure 7: Structure Of Mlfr - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

Interface Stacking

Platform Considerations

Copyright © 2010, Juniper Networks, Inc.
Table 9: LIP Messages and Functions (continued)
LIP Message Function
Remove-Link-Ack Member link sends this message when it receives a Remove-Link
message.
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.
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 133.

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.
You can configure MLFR interfaces on the following E Series Broadband Services Routers:
ERX1440 router
ERX1410 router
ERX710 router
ERX705 router
ERX310 router
NOTE: The E120 and E320 Broadband Services Routers do not support
configuration of MLFR interfaces.
Chapter 3: Configuring Multilink Frame Relay
133