Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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Use the no version to halt MPLS on the interface and delete the MPLS interface
configuration.
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See mpls.
mtu
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Use to specify the MTU for a LAG bundle.
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Specify a value in the range 64–9188 bytes. The range for FE-8 I/O modules is
64–9042 bytes.
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This command does not work for the Fast Ethernet port on the SRP module.
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Example
host1(config-if)# mtu 9000
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Use the no version to specify the default, 1518.
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See mtu.
pppoe subinterface lag
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Use to create a PPPoE subinterface on a LAG bundle.
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Example
host1(config-if)# pppoe subinterface lag boston.1
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Use the no version to remove the PPPoE subinterface from the LAG bundle.
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See pppoe subinterface.
virtual-router
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From Global Configuration mode, use this command to create a virtual router
or access the context of a previously created virtual router or a VRF.
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Example
host1(config)# virtual-router boston
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Use the no version of the command only to delete the VR and return the router
to the default VR.
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See virtual-router.
Example: Configuring an IP Interface for a LAG Bundle
The following example displays configuration of LACP for two Fast Ethernet interfaces
in slot 0. The interfaces are enabled for active LACP. The speed and duplex
characteristics are the same for both interfaces.
host1(config)# interface fastEthernet 0/0
host1(config-if)# speed 100
host1(config-if)# duplex full
Example: Configuring an IP Interface for a LAG Bundle
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Chapter 6: Configuring 802.3ad Link Aggregation and Link Redundancy