480 CHAPTER 26: I NTEGRATED IS-IS CONFIGURATION COMMANDSused to enable each interface which needs to run the IS-IS process. The IS-ISprotocol is actually enabled upon the completion of these configurations.Related command: isis, network-entity.Example# Create an IS-IS routing process named "3com", and activate this routing processon interface Vlan-interface 10.[SW8800] isis 3com[3Com-isis] network-entity 10.0001.1010.1020.1030.00[SW8800] interface Vlan-interface 10[3Com-Vlan-interface10] isis enable 3comisis mesh-group Syntaxisis mesh-group { mesh-group-number | mesh-blocked }undo isis mesh-groupViewInterface viewParametermesh-group-number: Specifies the mesh group number, ranging from 1 to4,294,967,295.mesh-blocked: Configures to block a specified interface, so that it will not floodthe received LSP to other interfaces.DescriptionUse the isis mesh-group command to add an interface to a specified meshgroup.Use the undo isis mesh-group command to delete this interface from the meshgroup.By default, the interface does not belong to any mesh group and floods LSPnormally.The interface beyond the mesh group floods the received LSP to other interfaces,following the normal procedure.The interface joining a mesh group only floods the received LSP to the interfacesbeyond the local mesh group.Make sure to provide some redundancy when adding an interface to a meshgroup or blocking it, avoiding the affect to the normal flooding of the LSP due tolink failure.Example# Add Vlan-interface 20 running IS-IS to mesh group 3.[3Com-Vlan-interface20] isis mesh-group 3
