Mlfr Link Integrity Protocol; Figure 5: Mlfr Aggregation Of T1 Lines Into A Single Bundle; Figure 6: Terminating The Bundle At An Mlfr Bridge; Table 9: Lip Messages And Functions - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

JunosE 11.3.x Link Layer Configuration Guide

Figure 5: MLFR Aggregation of T1 Lines into a Single Bundle

Figure 6: Terminating the Bundle at an MLFR Bridge

MLFR Link Integrity Protocol

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typically imposes a practical limit of 8xT1 service; that is, aggregation of no more than
eight T1 or E1 connections into an MLFR bundle.
This implementation of MLFR logically aggregates up to eight T1 or E1 connections into
a single virtual connection, known as a bundle, to a given customer site. The connections
can terminate at a CPE (Figure 5 on page 132) or a Multilink Frame Relay bridge (Figure
6 on page 132).
Member links in an MLFR bundle support the MLFR Link Integrity Protocol (LIP). LIP offers
several types of messages, which allow member links to join and leave a bundle. See
Table 9 on page 132.

Table 9: LIP Messages and Functions

LIP Message Function
Add-Link Member link sends this message to request to join a bundle.
Add-Link-Ack Member link sends this message when it receives an Add-Link
message.
Add-Link-Rej Member link sends this message to reject a request to join a
bundle.
Hello Member link sends this message to check the status of another
member.
Hello-Ack Member link sends this message when it receives a Hello
message.
Remove-Link Member link sends this message to request to leave a bundle.
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