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Home Documentation Junos OS Layer 2 VPNs and VPLS User Guide for Routing Devices Configuring VPLS Configuring Load Balancing and Performance

Layer 2 VPNs and VPLS User Guide for Routing Devices

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Layer 2 VPNs and VPLS User Guide for Routing Devices
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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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Configuring MAC Pinning on Trunk Interfaces for Logical Systems

date_range 23-Nov-23
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A MAC move occurs when a MAC address frequently appears on a different physical interface than the one it was learned on. Frequent MAC moves indicate the presence of loops. To avoid loops across interfaces in logical systems, you can configure MAC pinning. A set of logical systems within a single router can handle the functions previously handled by several small routers.

This topic describes how to configure MAC pinning on trunk interfaces of a logical system.

To configure MAC pinning on trunk interfaces in logical systems:

  1. Configure the interface and specify the encapsulation.
    content_copy zoom_out_map
    [edit interfaces]
user@host# set interfacetype-fpc/pic/port flexible-vlan-tagging 
user@host# set interfacetype-fpc/pic/port encapsulation flexible-ethernet-services
  2. Create the logical system by specifying the name of the logical system, and specify the trunk interface and list of VLAN IDs associated with the interface.
    content_copy zoom_out_map
    [edit]
user@host# set logical-systems logical-system-name interfaces interfacetype-fpc/pic/port unit logical-unit-number encapsulation vlan-vpls family bridge interface-mode trunk vlan-id-list vlan-id-numbers
  3. Configure the bridge domain by specifying the VLAN ID parameter.
    content_copy zoom_out_map
    [edit bridge-domains]
user@host# set bridge-domain-name vlan-id all
  4. Configure MAC pinning on the trunk interface by including the [mac-pinning] statement at the [edit switch-options] hierarchy level.
    content_copy zoom_out_map
    [edit switch-options]
user@host# set interface interfacetype-fpc/pic/port mac-pinning
  5. In configuration mode, verify the configuration.
    content_copy zoom_out_map
    user@host# show interfaces
interfaces {
    interfacetype-fpc/pic/port {
        flexible-vlan-tagging; 
		encapsulation flexible-ethernet-services;
    }
}
    content_copy zoom_out_map
    user@host# show logical-systems
logical-systems {
    logical-system-name  {
        interfaces {
            interfacetype-fpc/pic/port
{
                  unit 0 {
                    encapsulation vlan-vpls;
                    family bridge {
                        interface-mode trunk;
                        vlan-id-list vlan-id-numbers;
                    }
                }
            }
        }
    content_copy zoom_out_map
    user@host# show bridge-domains
bridge-domains {
            bridge-domain-name  {
                vlan-id all;
            }
        }
    content_copy zoom_out_map
    user@host# show switch-options
switch-options {
            interface interfacetype-fpc/pic/port {
                mac-pinning;
            }
        }
    }
}

Related Documentation

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