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:
- Configure the interface and specify the encapsulation.
[edit interfaces]
user@host# set interfacetype-fpc/pic/port flexible-vlan-tagging
user@host# set interfacetype-fpc/pic/port encapsulation flexible-ethernet-services
- 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.
[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
- Configure the bridge domain by specifying the VLAN ID
parameter.
[edit bridge-domains]
user@host# set bridge-domain-name vlan-id all
- Configure MAC pinning on the trunk interface by including
the [
mac-pinning] statement at the [edit switch-options] hierarchy level. [edit switch-options]
user@host# set interface interfacetype-fpc/pic/port mac-pinning
- In configuration mode, verify the configuration.
user@host# show interfaces
interfaces {
interfacetype-fpc/pic/port {
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
}
}
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;
}
}
}
}
user@host# show bridge-domains
bridge-domains {
bridge-domain-name {
vlan-id all;
}
}
user@host# show switch-options
switch-options {
interface interfacetype-fpc/pic/port {
mac-pinning;
}
}
}
}
