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This chapter describes the Cisco NX-OS Multiprotocol Label Switching commands that begin with F.
To enable an Multiprotocol Label Switching (MPLS) traffic engineering (TE) tunnel to request a backup tunnel to protect against a link or node failure, use the fast-reroute command. To restore the system to its default condition, use the no form of this command.
fast-reroute [bw-protect] [node-protect]
TE interface configuration mode
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This example shows how to specify bandwidth protection:
This example shows how to specify node protection:
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To change the backup protection preemption algorithm from minimizing the number of label switched paths (LSPs) that are demoted to minimizing the amount of bandwidth that is wasted, use the fast-reroute backup-prot-preempt command.
fast-reroute backup-prot-preempt optimize-bw
MPLS traffic engineering global configuration mode
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This example shows how to change the backup protection preemption algorithm from minimizing the number of LSPs that are demoted to minimizing the amount of bandwidth that is wasted:
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Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering protocol (MPLS-TE). |
To specify how often the router considers switched a label switching path (LSP) to a new (better) backup tunnel if additional backup bandwidth becomes available, use the fast-reroute timers promotion command. To restore the system to its default condition, use the no form of this command.
fast-reroute timers promotion sec
no fast-reroute timers promotion
The timer is running and is set to a frequency of every 300 seconds (5 minutes)
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This example shows how to configure how often to scan for LSP backup promotion:
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Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering protocol (MPLS-TE). |
To enable Bidirectional Forwarding Detection (BFD) on the router Multiprotocol Label Switching (MPLS) traffic engineering (TE) link and node protection, use the feature bfd command. To disable the system to its default condition, use the no form of this command.
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This example shows how to enable BFD on the device:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable the Border Gateway Protocol (BGP) feature, use the feature bgp command. To return to the default setting, use the no form of this command.
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This example shows how to enable BGP:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable Ethernet virtual circuits (EVCs) on a Cisco NX-OS device, use the feature evc command. To disable EVC, use the no form of this command.
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This example shows how to enable EVC on the Cisco NX-OS device:
This example shows how to disable EVC on the Cisco NX-OS device:
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To enable the Intermediate System-to-Intermediate System (IS-IS) feature, use the feature isis command. To return to the default setting, use the no form of this command.
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This example shows how to enable the IS-IS feature:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable the Multiprotocol Label Switching (MPLS) Layer 3 virtual private networks, use the feature mpls l3vpn command. To return to the default setting, use the no form of this command.
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This example shows how to enable the MPLS Layer 3 virtual private networks:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) feature on the device, use the feature mpls ldp command. To return to the default setting, use the no form of this command.
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When you disable MPLS LDP on the device, no LDP commands are available.
This example shows how to enable IP over MPLS:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable Multiprotocol Label Switching (MPLS) traffic engineering (TE) on the device, use the feature mpls traffic-engineering command. To return to the default setting, use the no form of this command.
feature mpls traffic-engineering
no feature mpls traffic-engineering
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Unless you enable MPLS TE on the device, no TE commands are available.
This example shows how to enable MPLS TE:
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To enable the Multiprotocol Label Switching (MPLS) multicast virtual private network (MVPN) feature on the device, use the feature mvpn command. To return to the default setting, use the no form of this command.
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This example shows how to enable MVPN feature on the device:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable the Open Shortest Path First (OSPF) feature, use the feature ospf command. To disable this feature, use the no form of this command.
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This example shows how to enable information about the OSPF configuration:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To enable the feature set Multiprotocol Label Switching (MPLS) information, use the feature-set mpls command. To disable this feature, use the no form of this command.
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This example shows how to enable the MPLS feature set information:
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |
To advertise a traffic engineering (TE) tunnel as a link in an Interior Gateway Protocol (IGP) network, use the forwarding-adjacency command. To return to the default setting, use the no form of this command.
forwarding-adjacency [holdtime value]
(Optional) Specifies the time, in milliseconds, that a TE tunnel waits after going down before informing the network. |
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This example shows how to advertise the TE tunnel as a link in an IGP network:
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To map the value from one number to another, use the from command.
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This example shows how to map the value from one number to another (you can repeat this command up to 64 times):
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Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP). |