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Configuring LACP Link Protection at the Chassis Level

Link Aggregation Control Protocol (LACP) is one method of bundling several physical interfaces to form one logical interface. You can configure both VLAN-tagged and untagged aggregated Ethernet with or without LACP enabled. LACP exchanges are made between actors and partners. An actor is the local interface in an LACP exchange. A partner is the remote interface in an LACP exchange.

LACP link protection enables you to force active and standby links within an aggregated Ethernet. You configure LACP link protection by configuring the link-protection and system-priority statements at either the chassis or interface level and by configuring port priority at the interface level using the port-priority statement. Configuring LACP parameters at the chassis level results in all aggregated Ethernet interfaces using these values unless overridden by LACP configuration on a specific interface.



[edit chassis]

aggregated-devices {



ethernet {



lacp {



link-protection {

non-revertive;
}



system-priority priority;
}


}


}

You configure LACP link protection by using the link-protection and system-priority statements and define port priority at the port level using the port-priority statement. Configuring LACP parameters at the chassis level results in all aggregated Ethernet interfaces using the defined configuration unless overridden on a specific interface.

Note: LACP link protection also uses port priority. You can configure port priority at the Ethernet interface [gigether-options] hierarchy level using the port-priority statement. If you choose not to configure port priority, LACP link protection uses the default value for port priority (127). See the JUNOS Network Interfaces Configuration Guide for detailed information about LACP and how to configure it on individual aggregated Ethernet interfaces.

Configuring LACP Link Protection at the Chassis Level

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