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Hierarchy Level

Release Information

Statement introduced in Junos OS Release 12.1.


Modify the maximum size of IS-IS link-state PDUs. IS-IS sends link-state PDUs out of IS-IS enabled interfaces to distribute routing information between the IS-IS nodes.


sizeMaximum size allocated for IS-IS link-state PDUs.

Range: 512 through 1492 bytes

Default: 1492 bytes

Required Privilege Level

routing—To view this statement in the configuration.

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