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Hierarchy Level


Modify the maximum size of partial or complete IS-IS sequence number PDUs. IS-IS sends sequence number packets out of IS-IS enabled interfaces to control the distribution of link-state PDUs between the IS-IS nodes. Sequence number packets provide a mechanism to synchronize the link-state databases of routers in the same area.



Maximum size allocated for sequence number of partial or complete IS-IS packets.

  • Range: 512 through 1400 bytes

  • Default: 1400 bytes

Required Privilege Level

routing—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 12.1.