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mesh-group (Protocols IS-IS)



Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.

Statement introduced in Junos OS Release 9.0 for EX Series switches.

Statement introduced in Junos OS Release 12.1 for the QFX Series.

Statement introduced in Junos OS Release 14.1X53-D20 for the OCX Series.


Configure an interface to be part of a mesh group, which is a set of fully connected nodes.

A mesh group is a set of routing devices that are fully connected. That is, they have a fully meshed topology. When link-state PDUs are being flooded throughout an area, each router within a mesh group receives only a single copy of a link-state PDU instead of receiving one copy from each neighbor, thus minimizing the overhead associated with the flooding of link-state PDUs.

To create a mesh group and designate that an interface be part of the group, assign a mesh-group number to all the routing device interfaces in the group. To prevent an interface in the mesh group from flooding link-state PDUs, configure blocking on that interface.


blocked—Configure the interface so that it does not flood link-state PDUs.

value—Number that identifies the mesh group.

Range: 1 through 4,294,967,295 (232 – 1; 32 bits are allocated to identify a mesh group)

Required Privilege Level

routing—To view this statement in the configuration.

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