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Configuring Maintenance Intermediate Points

MX Series routers support maintenance intermediate points (MIPs) for the Ethernet OAM 802.1ag CFM protocol at a bridge-domain level. This enables you to define a maintenance domain for each default level. The MIPs names are created as default-level-number at the [edit protocols oam ethernet connectivity-fault-management maintenance-domain] hierarchy level. Use the bridge-domain, instance, virtual-switch, and mip-half-function MIP options to specify the MIP configuration.

Note: Whenever a MIP is configured and a bridge domain is mapped to multiple maintenance domains or maintenance associations, it is essential that the mip-half-function value for all maintenance domains and maintenance associations be the same.

To display MIP configurations, use the show oam ethernet connectivity-fault-management mip (bridge-domain | instance-name | interface-name) command.

Configuring MIP for Bridge Domains of a Virtual Switch

The default maintenance domain configuration allows MIP configuration for bridge domains for a default virtual switch or a user-defined virtual switch. You can use the virtual-switch and bridge-domain statements to specify which MIPs to enable for a user-defined virtual switch.

A bridge domain must be specified by name only if it is configured by including the vlan-id id statement under the virtual-switch statement.

If a bridge domain is configured with a range of VLAN IDs, then the VLAN IDs must be explicitly listed after the bridge domain name.

Configuring the Maintenance Domain Bridge Domain

The VLAN corresponds to the bridge domain.

To configure the bridge domain for the default virtual switch, include the bridge-domain statement at the [edit protocols oam ethernet connectivity-fault-management maintenance-domain maintenance-domain-name] hierarchy level.

Configuring the Maintenance Domain Instance

To configure the maintenance domain instance for a VPLS routing instance, include the instance statement at the [edit protocols oam ethernet connectivity-fault-management maintenance-domain] hierarchy level.

Configuring the Maintenance Domain MIP Half Function

MIP Half Function (MHF) divides MIP functionality into two unidirectional segments, improves visibility with minimal configuration, and improves network coverage by increasing the number of points that can be monitored. MHF extends monitoring capability by responding to loopback and linktrace messages to help isolate faults.

Whenever a MIP is configured and a bridge domain is mapped to multiple maintenance domains or maintenance associations, it is essential that the MIP half function value for all maintenance domains and maintenance associations be the same. To configure the MIP half function, include the mip-half-function statement at the [edit protocols oam ethernet connectivity-fault-management maintenance-domain] hierarchy level.