Table Of Contents
fast-reroute (TE interface configuration mode)
fast-reroute backup-prot-preempt optimize-bw
feature mpls traffic-engineering
F Commands
This chapter describes the Cisco NX-OS Multiprotocol Label Switching commands that begin with F.
fast-reroute (TE interface configuration mode)
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]
no fast-reroute
Syntax Description
Defaults
None
Command Modes
TE interface configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to specify bandwidth protection:
switch# configure terminal
switch(config)# interface tunnel-te 1000
switch(config-if-te)# fast-reroute bw-protect
switch(config-if-te)#This example shows how to specify node protection:
switch# configure terminal
switch(config)# interface tunnel-te 1000
switch(config-if-te)# fast-reroute node-protect
switch(config-if-te)#Related Commands
fast-reroute backup-prot-preempt optimize-bw
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
Syntax Description
This command has no arguments or keywords.
Defaults
A minimum number of LSPs are preempted
Command Modes
MPLS traffic engineering global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
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:
switch# configure terminal
switch(config)# mpls traffic-eng configuration
switch(config-te)# fast backup-prot-preempt optimize-bw
switch(config-te)#Related Commands
Command Descriptionmpls traffic-eng configuration
Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering protocol (MPLS-TE).
fast-reroute timers promotion
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
Syntax Description
Defaults
The timer is running and is set to a frequency of every 300 seconds (5 minutes)
Command Modes
TE configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to configure how often to scan for LSP backup promotion:
switch# configure terminal
switch(config)# mpls traffic-eng configuration
switch(config-te)# fast-reroute timer promotion 10
switch(config-te)#Related Commands
Command Descriptionmpls traffic-eng configuration
Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering protocol (MPLS-TE).
feature bfd
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.
feature bfd
no feature bfd
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable BFD on the device:
switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.switch(config)# feature bfd
Please disable the ICMP redirects on all interfacesrunning BFD sessions using the command below'no ip redirects 'switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature bgp
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.
feature bgp
no feature bgp
Syntax Description
This command has no arguments or keywords.
Defaults
None
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable BGP:
switch# configure terminal
switch(config)# feature bgp
switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature isis
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.
feature isis
no feature isis
Syntax Description
This command has no arguments or keywords.
Defaults
Enable
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable the IS-IS feature:
switch(config-ldp)# configure terminal
switch(config)# feature isis
switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature mpls l3vpn
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.
feature mpls l3vpn
no feature mpls l3vpn
Syntax Description
This command has no arguments or keywords.
Defaults
Per VDC
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable the MPLS Layer 3 virtual private networks:
switch# configure terminal
switch(config)# install feature-set mpls
switch(config)# feature-set mpls
switch(config)# feature mpls l3vpn
Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature mpls 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.
feature mpls ldp
no feature mpls ldp
Syntax Description
This command has no arguments or keywords.
Defaults
Per VDC
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
When you disable MPLS LDP on the device, no LDP commands are available.
This command requires the MPLS Services license.
Examples
This example shows how to enable IP over MPLS:
switch(config)# install feature-set mpls
switch(config)# feature-set mpls
switch(config)# feature mpls ldp
LAN_ENTERPRISE_SERVICES_PKG license not installed. ldp feature will be shut downafter grace period of approximately 115 day(s).switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature mpls traffic-engineering
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
Syntax Description
This command has no arguments or keywords.
Defaults
Per VDC
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
Unless you enable MPLS TE on the device, no TE commands are available.
The user has to enter feature command to enable TE.
This command requires the MPLS Services license.
Examples
This example shows how to enable MPLS TE:
switch(config)# install feature-set mpls
switch(config)# feature-set mpls
switch(config)# feature mpls traffic-engineering
switch(config)#Related Commands
feature mvpn
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.
feature mvpn
no feature mvpn
Syntax Description
This command has no arguments or keywords.
Defaults
Enabled
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable MVPN feature on the device:
switch(config)# feature mvpn
switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature ospf
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.
feature ospf
no feature ospf
Syntax Description
This command has no arguments or keywords.
Defaults
Enable
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable information about the OSPF configuration:
switch(config)# feature ospf
switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
feature-set mpls
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.
feature-set mpls
no feature-set mpls
Syntax Description
This command has no arguments or keywords.
Defaults
Per VDC
Command Modes
Global configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to enable the MPLS feature set information:
switch(config)# feature-set mpls
switch(config)#Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).
forwarding-adjacency
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]
no forwarding-adjacency
Syntax Description
holdtime
(Optional) Specifies the time, in milliseconds, that a TE tunnel waits after going down before informing the network.
value
(Optional) Hold time. The range is from 0 to 4294967295.
Defaults
Default value is 0
Command Modes
TE tunnel configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to advertise the TE tunnel as a link in an IGP network:
switch# configure terminal
switch(config)# interface tunnel-te 1
switch(config-if-te)# forwarding-adjacency holdtime 1
switch(config-if-te)#Related Commands
from
To map the value from one number to another, use the from command.
from number to number
Syntax Description
Defaults
None
Command Modes
Table map configuration mode
Supported User Rolesnetwork-admin
vdc-adminCommand History
Usage Guidelines
This command requires the MPLS Services license.
Examples
This example shows how to map the value from one number to another (you can repeat this command up to 64 times):
switch# configure terminal
switch(config)# table-map tablemap1
switch(config-tmap)# from 1 to 1
switch(config-tmap)# from 2 to 1
switch(config-tmap)# from 3 to 2
switch(config-tmap)# from 4 to 2
switch(config-tmap)# exit
Related Commands
Command Descriptionmpls ldp configuration
Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).