Cisco Nexus 7000 Series NX-OS MPLS Command Reference
B Commands
Downloads: This chapterpdf (PDF - 129.0KB) The complete bookPDF (PDF - 5.67MB) | Feedback

B Commands

Table Of Contents

B Commands

backoff

backup-bw

bandwidth (LSP attribute configuration mode)

bandwidth (TE interface configuration mode)

bfd interval

bfd slow-timer


B Commands


This chapter describes the Cisco NX-OS Multiprotocol Label Switching commands that begin with B.

backoff

To configure session setup delay parameters for the Label Distribution Protocol (LDP) backoff mechanism, use the backoff command. To return to the default setting, use the no form of this command.

backoff initial-backoff max-backoff

no backoff

Syntax Description

initial-backoff

Initial backoff value in seconds. The range is from 5 to 2147483.

max-backoff

Maximum backoff value in seconds. The range is from 5 to 2147483.


Defaults

None

Command Modes

LDP configuration mode

Supported User Roles

network-admin
vdc-admin

Command History

Release
Modification

5.2(1)

This command was introduced.


Usage Guidelines

This command requires the MPLS Services license.

Examples

This example shows how to setup delay parameters for the LDP backoff mechanism:

switch(config)# mpls ldp configuration
switch(config-ldp)# backoff 30 240
switch(config-ldp)#

Related Commands

Command
Description

mpls ldp configuration

Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).


backup-bw

To specify whether this tunnel-te, when used as a backup tunnel, should provide bandwidth protection, and how much, use the backup-bw command. To restore the system to its default condition, use the no form of this command.

backup-bw bandwidth

no backup-bw

Syntax Description

bandwidth

Amount of allocatable backup bandwidth. The range is from 1 to 4294967295.


Defaults

None

Command Modes

TE interface configuration mode

Supported User Roles

network-admin
vdc-admin

Command History

Release
Modification

5.2(1)

This command was introduced.


Usage Guidelines

This command requires the MPLS Services license.

Examples

This example shows how to associate the bandwidth with a backup tunnel:

switch# configure terminal
switch(config)# interface tunnel-te 2
switch(config-if-te)# backup-bw 1000
switch(config-if-te)#

Related Commands

Command
Description

interface tunnel-te

Configures the traffic engineering (TE) interface.


bandwidth (LSP attribute configuration mode)

To configure the label switched path (LSP) bandwidth, use the bandwidth command. To restore the system to its default condition, use the no form of this command.

bandwidth kbps

no bandwidth

Syntax Description

kbps

Number of kilobits per second set aside for the path option. The range is from 1 to 4294967295.


Defaults

None

Command Modes

LSP attribute configuration mode

Supported User Roles

network-admin
vdc-admin

Command History

Release
Modification

5.2(1)

This command was introduced.


Usage Guidelines

The following conditions apply for all tunnel engineering (TE) commands that can be specified both in "TE interface configuration mode; path-option command line, or LSP attribute configuration mode:

If a setting is specified for a label switched path (LSP), either via the path-option command directly or by assigning an LSP attribute list to a path-option, takes this setting precedence for that specific path option.

If no setting is specified for an LSP, then the LSP/path-option inherits any setting specified in the tunnel-te configuration mode: affinity, auto-bw, priority, record-route, protection/fast-reroute.

The bandwidth command configures the initial tunnel bandwidth, which is adjusted by the auto bandwidth mechanism.

This command requires the MPLS Services license.

Examples

This example shows how to configure the LSP bandwidth:

switch# configure terminal
switch(config)# mpls traffic-eng configuration
switch(config-te)# lsp attributes 1
switch(config-lsp-attr)# bandwidth 5000

Related Commands

Command
Description

mpls traffic-eng configuration

Configures the Multiprotocol Label Switching (MPLS) Traffic Engineering Protocol (MPLS-TE).


bandwidth (TE interface configuration mode)

To configure the bandwidth for a Multiprotocol Label Switching (MPLS) traffic engineering (TE) tunnel, use the bandwidth command. To restore the system to its default condition, use the no form of this command.

bandwidth bandwidth

no bandwidth

Syntax Description

bandwidth

Bandwidth in kilobits per second. The range is from 1 to 4294967295.


Defaults

0

Command Modes

TE interface configuration mode

Supported User Roles

network-admin
vdc-admin

Command History

Release
Modification

5.2(1)

This command was introduced.


Usage Guidelines

This command requires the MPLS Services license.

Examples

This example shows how to configure the bandwidth for a MPLS TE tunnel:

switch# configure terminal
switch(config)# interface tunnel-te 1
switch(config-if-te)# bandwidth 250
switch(config-if-te)#

Related Commands

Command
Description

interface tunnel-te

Configures the traffic engineering (TE) interface.


bfd interval

To set the Bidirectional Forwarding Detection (BFD) intervals for this interface, use the bfd interval command. To restore the system to its default condition, use the no form of this command.

bfd interval milliseconds min_rx milliseconds multiplier interval-multiplier

no bfd interval

Syntax Description

milliseconds

TX interval in milliseconds, which is the required rate at which control packets can be received. The range is from 50 to 999 milliseconds.

min_rx

Specifies minimum RX interval, which is the desired rate for transmitting control packets. The range is from 50 to 999 milliseconds.

multiplier

Specifies the detect multiplier for BFD sessions.

interval-multiplier

Multiplier interval. The range is from 1 to 50 milliseconds.


Defaults

Interval milliseconds-50

Min_rx_50

Multiplier interval-multiplier-3

Command Modes

Interface configuration mode

Supported User Roles

network-admin
vdc-admin

Command History

Release
Modification

5.2(1)

This command was introduced.


Usage Guidelines

This command requires the MPLS Services license.

Examples

This example shows how to set the BFD intervals:

switch# configure terminal
switch# configure terminal
switch(config)# interface ethernet 2/2
switch(config-if)# bfd interval 100 min_rx 100 multiplier 4
 
   
 
   
 
   

Related Commands

Command
Description

mpls ldp configuration

Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).


bfd slow-timer

To configure the slow mode timer for sessions, use the bfd slow-timer command. To restore the system to its default condition, use the no form of this command.

bfd slow-timer milliseconds

no bfd slow-timer milliseconds

Syntax Description

milliseconds

Slow rate timer in milliseconds. The range is from 1000 to 30000 milliseconds.


Defaults

None

Command Modes

Global configuration mode

Supported User Roles

network-admin
vdc-admin

Command History

Release
Modification

5.2(1)

This command was introduced.


Usage Guidelines

This command requires the MPLS Services license.

Examples

This example shows how to configure the slow mode timer for sessions:

switch# configure terminal
switch(config)# bfd slow-timer 1000
switch(config)#

Related Commands

Command
Description

mpls ldp configuration

Configures the Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP).