mpls ip (interface configuration)
To enable Multiprotocol Label Switching (MPLS) forwarding of IPv4 and IPv6 packets along normally routed
paths for a particular interface, use the mpls ip command in interface configuration mode. To disable this
configuration, use the no form of this command.
mpls ip
no mpls ip
Syntax Description
This command has no arguments or keywords.
Command Default
MPLS forwarding of IPv4 and IPv6 packets along normally routed paths for the interface is disabled.
Command Modes
Interface configuration (config-if)
Command History
ModificationRelease
This command was introduced.Cisco IOS XE Denali 16.3.1
Usage Guidelines
MPLS forwarding of IPv4 and IPv6 packets along normally routed paths is sometimes called dynamic label
switching. If dynamic label switching has been enabled for the platform when this command is issued on an
interface, label distribution for the interface begins with the periodic transmission of neighbor discovery Hello
messages on the interface. When the outgoing label for a destination routed through the interface is known,
packets for the destination are labeled with that outgoing label and forwarded through the interface.
The no form of this command causes packets routed out through the interface to be sent unlabeled; this form
of the command also terminates label distribution for the interface. However, the no form of the command
does not affect the sending of labeled packets through any link-state packet (LSP) tunnels that might use the
interface.
Examples
The following example shows how to enable label switching on the specified Ethernet interface:
Switch(config)# configure terminal
Switch(config-if)# interface TenGigabitEthernet1/0/3
Switch(config-if)# mpls ip
The following example shows that label switching is enabled on the specified vlan interface (SVI) on a Cisco
Catalyst switch:
Switch(config)# configure terminal
Switch(config-if)# interface vlan 1
Switch(config-if)# mpls ip
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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mpls ip (interface configuration)
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