Bundle Validation Failure; Recovering From Bundle Validation Failure; Configuring Fragmentation And Reassembly For Static Mlppp - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

JunosE 11.2.x Link Layer Configuration Guide

Configuring Fragmentation and Reassembly for Static MLPPP

322
Configure the same reassembly setting—enabled or disabled—for all member links in
a bundle.
Make sure a link's administrative MRRU is greater than or equal to the local maximum
receive unit (MRU) negotiated both on that link and on other member links in the
bundle.
The local MRRU negotiated on a link must be the same as the local MRRU negotiated
on the other member links in the bundle.
The peer MRRU negotiated on a link must be the same as the peer MRRU negotiated
on the other member links in the bundle.
When reassembly is enabled, member links belonging to the same bundle can have
different local MRU values.
When reassembly is disabled, member links belonging to the same bundle must
negotiate the same local MRU value.

Bundle Validation Failure

If an MLPPP link interface fails bundle validation because one or more of the preceding
configuration guidelines are not met, the router's actions differ depending on whether
you are using a static MLPPP configuration or a dynamic MLPPP configuration, as follows:
For static MLPPP configurations, the router permits the failed link to join the bundle,
but forces the link into a down state.
For dynamic MLPPP configurations, the router prohibits the failed link from joining the
bundle, and subsequently tears down the link.

Recovering from Bundle Validation Failure

To recover from a bundle validation failure, you must reconfigure the link interface (for
static MLPPP configurations) or reconfigure the profile (for dynamic MLPPP
configurations) according to the guidelines described in "Bundle Validation and
Configuration Guidelines" on page 321.
To configure fragmentation and reassembly on a static MLPPP link interface:
From Global Configuration mode, specify the individual link interface on which you
1.
want to configure fragmentation and reassembly.
host1(config)#interface serial 4/0:1/1/1/1/1
Specify MLPPP as the encapsulation method on the link interface.
2.
host1(config-if)#encapsulation mlppp
Enable fragmentation on the link interface, and optionally specify the maximum
3.
allowable fragment size to use.
host1(config-if)#ppp fragmentation 128
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