The isis mesh-group command adds an interface to a specified mesh group.
The undo isis mesh-group command deletes the interface from the mesh group.
By default, an interface does not belong to any mesh group and floods LSPs normally.
| Parameter | Description | Value |
|---|---|---|
| mesh-group-number | Specifies the mesh group number. | The value ranges from 1 to 4294967295. |
| mesh-blocked | After the parameter is set, the interface is blocked, and the interface does not flood the received LSPs to other interface. | - |
Ethernet interface view, Ethernet sub-interface view, Eth-Trunk interface view, Eth-Trunk sub-interface view, Tunnel interface view, Loopback interface view, Dialer interface view, VLANIF interface view, Virtual-Template interface view
When receiving LSPs, the interface, not in the mesh group, floods the LSPs to other interfaces following the normal procedure. For the NBMA network that is with higher connectivity and several P2P links, this process causes repeated LSP flooding and wastes bandwidth.
After receiving LSPs, the interface that joins a mesh group only floods the LSPs to the interfaces that are not in the local mesh group.
When adding interfaces to mesh groups or blocking interfaces, keep certain interfaces from being configured with the isis mesh-group command. This can prevent link faults from affecting the normal spreading of LSPs.