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Configuring Aggregated Ethernet Interfaces for VPLS

You can configure aggregated Ethernet interfaces between CE devices and PE routers for VPLS routing instances. Traffic is load balanced across all of the links in the aggregated interface. If one or more links in the aggregated interface fails, the traffic is switched to the remaining links.

For more information on how aggregated Ethernet interfaces function in the context of VPLS, see VPLS and Aggregated Ethernet Interfaces.

To configure aggregated Ethernet interfaces for VPLS, configure the interface for the VPLS routing instance as follows:



interfaces aex {
vlan-tagging;
encapsulation encapsulation-type;


unit logical-unit-number {
vlan-id number;
}


}

The encapsulation type can be ethernet-vpls, vlan-vpls or extended-vlan-vpls. For the interface configuration statement, in aex, the x represents the interface instance number to complete the link association; x can be from 0 through 127, for a total of 128 aggregated interfaces.

For more information on how to configure aggregated Ethernet interfaces, see the JUNOS Network Interfaces Configuration Guide.

The aggregated Ethernet interface must also be configured for the VPLS routing instance as shown in the following example:



[edit]
routing-instances {


green {
instance-type vpls;
interface ae0.0;
route-distinguisher 10.255.234.34:1;
vrf-target target:11111:1;


protocols {


vpls {
site-range 10;


site green3 {
site-identifier 3;
}


}


}


}


}

Interface ae0.0 represents the aggregated Ethernet interface in the routing instance configuration. The VPLS routing instance configuration is otherwise standard.

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