allow-fragmentation
Syntax
allow-fragmentation;
Hierarchy Level
[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.
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.