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Home Documentation Junos OS Junos CLI Reference CLI Reference A

Junos CLI Reference

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Junos CLI Reference
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allow-fragmentation

date_range 19-Nov-23
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Syntax

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allow-fragmentation;

Hierarchy Level

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[edit interfaces gr-fpc/pic/port unit logical-unit-number tunnel],
[edit logical-systems logical-system-name interfaces gr-fpc/pic/port unit logical-unit-number tunnel]

Description

For a generic routing encapsulation (GRE) tunnel, enable fragmentation of GRE-encapsulated packets whose size exceeds the maximum transmission unit (MTU) value of a link that the packet passes through. The don’t-fragment (DF) bit is not set in the outer IP header of GRE-encapsulated packets.

To enable the reassembly of fragmented GRE-encapsulated packets on GRE tunnel interfaces at the endpoint of the GRE tunnel, include the reassemble-packets statement for the interface.

Note:

The reassemble-packets statement is not supported on MPC10E line card in Junos OS Release 19.3.

Default

If you do not include the allow-fragmentation statement, fragmentation of GRE-encapsulated packets is disabled.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 9.2.

Statement introduced in Junos OS Release 19.3 for MPC10E line card.

Related Documentation

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