MPLS Traffic Engineering Path Calculation and Setup Configuration Guide, Cisco IOS XE Release 3S

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MPLS Traffic Engineering Path Calculation and Setup Configuration Guide, Cisco IOS XE Release 3S

Chapter Title

MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels

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Updated:: August 4, 2017

Chapter: MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels

Finding Feature Information
Prerequisites for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Restrictions for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Information About MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
- MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Overview
- MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Benefits
How to Configure MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Configuration Examples for MPLS TE Automatic Bandwidth Adjustments for TE Tunnels
- Example: Configuring MPLS Traffic Engineering Automatic Bandwidth
- Example: Tunnel Configuration for Automatic Bandwidth
Additional References
Feature Information for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels

The MPLS Traffic Engineering (TE) Automatic Bandwidth Adjustment for TE Tunnels feature provides the means to automatically adjust the bandwidth allocation for traffic engineering tunnels based on their measured traffic load. The configured bandwidth in the running configuration is changed due to the automatic bandwidth behavior.

Finding Feature Information
Prerequisites for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Restrictions for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Information About MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
How to Configure MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Configuration Examples for MPLS TE Automatic Bandwidth Adjustments for TE Tunnels
Additional References
Feature Information for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Prerequisites for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

Your network must support the following:

Multiprotocol Label Switching (MPLS) traffic engineering (TE) tunnels
Cisco Express Forwarding
Intermediate System-to-Intermediate System (IS-IS) or Open Shortest Path First (OSPF)

MPLS TE must be configured on the interface and on the tunnels.

Restrictions for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

The automatic bandwidth adjustment feature treats each tunnel for which it has been enabled independently. That is, it adjusts the bandwidth for each such tunnel according to the adjustment frequency configured for the tunnel and the sampled output rate for the tunnel since the last adjustment without regard for any adjustments previously made or pending for other tunnels.
If a tunnel is brought down to calculate a new label switched path (LSP) because the LSP is not operational, the configured bandwidth is not saved. If the router is reloaded, the last saved automatic bandwidth value is used.
You cannot configure MPLS TE over the logical generic routing encapsulation (GRE) tunnel interface.
MPLS traffic engineering supports only a single IGP process/instance. Multiple IGP processes/instances are not supported and MPLS traffic engineering should not be configured in more than one IGP process/instance.

Information About MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Overview
MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Benefits

MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Overview

Traffic engineering autobandwidth samples the average output rate for each tunnel marked for automatic bandwidth adjustment. For each marked tunnel, the feature periodically (for example, once per day) adjusts the tunnel’s allocated bandwidth to be the largest sample for the tunnel since the last adjustment.

The frequency with which tunnel bandwidth is adjusted and the allowable range of adjustments is configurable on a per-tunnel basis. In addition, the sampling interval and the interval over which to average tunnel traffic to obtain the average output rate is user-configurable on a per-tunnel basis.

MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Benefits

The automatic bandwidth feature allows you to configure and monitor the bandwidth for MPLS TE tunnels. If automatic bandwidth is configured for a tunnel, TE automatically adjusts the tunnel’s bandwidth.

How to Configure MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

Configuring a Device to Support Traffic Engineering Tunnels
Configuring IS-IS or OSPF for MPLS Traffic Engineering
Configuring Bandwidth on Each Link That a Tunnel Crosses
Configuring an MPLS Traffic Engineering Tunnel
Enabling Automatic Bandwidth Adjustment on a Platform
Enabling Automatic Bandwidth Adjustment for a Tunnel
Configuring the Interval for Computing the Tunnel Average Output Rate
Verifying Automatic Bandwidth Configuration

Configuring a Device to Support Traffic Engineering Tunnels

SUMMARY STEPS

1. enable

2. configure terminal

3. ip cef distributed

4. mpls traffic-eng tunnels

5. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	ip cef distributed Example: Router(config)# ip cef distributed	Enables distributed Cisco Express Forwarding operation.
Step 4	mpls traffic-eng tunnels Example: Router(config)# mpls traffic-eng tunnels	Enables the MPLS traffic engineering tunnel feature on a device.
Step 5	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Configuring IS-IS or OSPF for MPLS Traffic Engineering

Perform one of the follow tasks to configure IS-IS or OSPF for MPLS TE:

Configuring IS-IS for MPLS Traffic Engineering
Configuring OSPF for MPLS Traffic Engineering

Configuring IS-IS for MPLS Traffic Engineering

SUMMARY STEPS

1. enable

2. configure terminal

3. router isis

4. mpls traffic-eng level-1

5. mpls traffic-eng router-id loopback0

6. metric-style wide

7. exit

8. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	router isis Example: Router(config)# router isis	Enables IS-IS routing and specifies an IS-IS process for IP, and enters router configuration mode.
Step 4	mpls traffic-eng level-1 Example: Router(config-router)# mpls traffic-eng level-1	Turns on MPLS TE for IS-IS level 1.
Step 5	mpls traffic-eng router-id loopback0 Example: Router(config-router)# mpls traffic-eng router-id loopback0	Specifies that the TE router identifier for the node is the IP address associated with interface loopback0.
Step 6	metric-style wide Example: Router(config-router)# metric-style wide	Configures a router to generate and accept only new-style type, length, value objects (TLVs).
Step 7	exit Example: Router(config-router)# exit	Exits to global configuration mode.
Step 8	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Configuring OSPF for MPLS Traffic Engineering

SUMMARY STEPS

1. enable

2. configure terminal

3. router ospf process-id

4. mpls traffic-eng area number

5. mpls traffic-eng router-id loopback0

6. exit

7. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	router ospf process-id Example: Router(config)# router ospf 200	Configures an OSPF routing process for IP and enters router configuration mode. The value for the process-id argument is an internally used identification parameter for an OSPF routing process. It is locally assigned and can be any positive integer. Assign a unique value for each OSPF routing process.
Step 4	mpls traffic-eng area number Example: Router(config-router)# mpls traffic-eng area 0	Turns on MPLS TE for the indicated OSPF area.
Step 5	mpls traffic-eng router-id loopback0 Example: Router(config-router)# mpls traffic-eng router-id loopback0	Specifies that the TE router identifier for the node is the IP address associated with interface loopback0.
Step 6	exit Example: Router(config-router)# exit	Exits to global configuration mode.
Step 7	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Configuring Bandwidth on Each Link That a Tunnel Crosses

SUMMARY STEPS

1. enable

2. configure terminal

3. interface type number

4. mpls traffic-eng tunnels

5. ip rsvp bandwidth [interface-kbps] [single-flow-kbps] [sub-pool kbps]

6. exit

7. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface type number Example: Router(config)# interface FastEthernet 0/0/0	Configures an interface type and enters interface configuration mode.
Step 4	mpls traffic-eng tunnels Example: Router(config-if)# mpls traffic-eng tunnels	Enables MPLS TE tunnels on an interface.
Step 5	ip rsvp bandwidth [interface-kbps] [single-flow-kbps] [sub-pool kbps] Example: Router(config-if)# ip rsvp bandwidth 1000 100	Enables Resource Reservation Protocol (RSVP) for IP on an interface. The interface-kbps argument specifies the maximum amount of bandwidth (in kbps) that may be allocated by RSVP flows. The range is from 1 to 10000000. The single-flow-kbpsargument is the maximum amount of bandwidth, in kbps, that may be allocated to a single flow. The range is from 1 to 10000000.
Step 6	exit Example: Router(config-if)# exit	Exits to global configuration mode.
Step 7	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Configuring an MPLS Traffic Engineering Tunnel

To configure an MPLS TE tunnel, perform the following task. The MPLS TE tunnel has two path setup options: a preferred explicit path and a backup dynamic path.

Note

The configuration applies only to the TE head-end node. The configuration applies to all nodes and interfaces in the network.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface tunnel number

4. ip unnumbered interface-type interface-number

5. tunnel destination ip-address

6. tunnel mode mpls traffic-eng

7. tunnel mpls traffic-eng bandwidth bandwidth

8. tunnel mpls traffic-eng path-option [protect] preference-number{dynamic | explicit | {name path-name | path-number}} [lockdown]

9. exit

10. exit

DETAILED STEPS

Command or Action

Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

Enter your password if prompted.

Step 2

configure terminal

Example:

Router# configure terminal

Enters global configuration mode.

Step 3

interface tunnel number

Example:

Router(config)# interface tunnel 1

Configures a tunnel interface and enters interface configuration mode.

Step 4

ip unnumbered interface-type interface-number

Example:

Router(config-if)# ip unnumbered loopback 0

Gives the tunnel interface an IP address that is the same as that of interface Loopback0.

An MPLS TE tunnel interface should be unnumbered because it represents a unidirectional link.

Note

This command is not effective until Lookback0 has been configured with an IP address.

Step 5

tunnel destination ip-address

Example:

Router(config-if)# tunnel destination 10.3.3.3

Specifies the destination for a tunnel.

The destination must be the MPLS TE router ID of the destination device.

Step 6

tunnel mode mpls traffic-eng

Example:

Router(config-if)# tunnel mode mpls traffic-eng

Sets the encapsulation mode of the tunnel to MPLS TE.

Step 7

tunnel mpls traffic-eng bandwidth bandwidth

Example:

Router(config-if)# tunnel mpls traffic-eng bandwidth 250

Configures the bandwidth for the MPLS TE tunnel.

The bandwidth argument is the bandwidth, in kilobits per second, set for the MPLS TE tunnel. The range is from 1 to 4294967295. The default is 0.
If automatic bandwidth is configured for the tunnel, the tunnel mpls traffic-eng bandwidth command configures the initial tunnel bandwidth, which will be adjusted by the autobandwidth mechanism.

Note

If you configure a tunnel’s bandwidth with the tunnel mpls traffic-eng bandwidth command and the minimum amount of automatic bandwidth with the tunnel mpls traffic-eng auto-bwcommand, the minimum amount of automatic bandwidth adjustment is the lower of those two configured values.

Step 8

tunnel mpls traffic-eng path-option [protect] preference-number{dynamic | explicit | {name path-name | path-number}} [lockdown]

Example:

Router(config-if)# tunnel mpls traffic-eng path-option 10 explicit avoid-protected-link

Configures the tunnel to use a named IP explicit path or a path dynamically calculated from the TE topology database.

A dynamic path is used if an explicit path is currently unavailable.

Step 9

exit

Example:

Router(config-if)# exit

Exits to global configuration mode.

Step 10

exit

Example:

Router(config)# exit

Exits to privileged EXEC mode.

Troubleshooting Tips

Each tunnel mpls traffic-eng auto-bw command supersedes the previous one. Therefore, if you want to specify multiple options for a tunnel, you must specify them all in a single tunnel mpls traffic-eng auto-bw command.

Enabling Automatic Bandwidth Adjustment on a Platform

To enable automatic bandwidth adjustment on a platform and initiate sampling the output rate for tunnels configured for bandwidth adjustment, perform the following task.

Note

This task is applicable only to the TE head-end router. The configuration applies to all locally-configured TE head-end interfaces.

SUMMARY STEPS

1. enable

2. configure terminal

3. mpls traffic-eng auto-bw timers [frequency seconds]

4. no mpls traffic-eng auto-bw timers

5. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	mpls traffic-eng auto-bw timers [frequency seconds] Example: Router(config)# mpls traffic-eng auto-bw timers frequency 300	Enables automatic bandwidth adjustment on a platform and begins sampling the output rate for tunnels that have been configured for automatic bandwidth adjustment. The frequency keyword specifies the interval, in seconds, for sampling the output rate of each tunnel configured for automatic bandwidth. The range is 1 through 604800. The recommended value is 300.
Step 4	no mpls traffic-eng auto-bw timers Example: Router(config)# no mpls traffic-eng auto-bw timers	(Optional) Disables automatic bandwidth adjustment on a platform. Use the no version of the command, whichterminates output rate sampling and bandwidth adjustment for tunnels. In addition, the no form of the command restores the configured bandwidth for each tunnel where the configured bandwidth is determined as follows: If the tunnel bandwidth was explicitly configured via the tunnel mpls traffic-eng bandwidth command after the running configuration was written to the startup configuration, the configured bandwidth is the bandwidth specified by that command. Otherwise, the configured bandwidth is the bandwidth specified for the tunnel in the startup configuration.
Step 5	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Enabling Automatic Bandwidth Adjustment for a Tunnel

SUMMARY STEPS

1. enable

2. configure terminal

3. interface tunnel number

4. tunnel mpls traffic-eng auto-bw [collect-bw] [frequency seconds ] [adjustment-threshold percent] [overflow-limit number overflow-threshold percent] [max-bw kbps] [min-bw kbps]

5. exit

6. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface tunnel number Example: Router(config)# interface tunnel 1	Configures a tunnel interface and enters interface configuration mode.
Step 4	tunnel mpls traffic-eng auto-bw [collect-bw] [frequency seconds ] [adjustment-threshold percent] [overflow-limit number overflow-threshold percent] [max-bw kbps] [min-bw kbps] Example: Router(config-if)# tunnel mpls traffic-eng auto-bw max-bw 2000 min-bw 1000	Enables automatic bandwidth adjustment for the tunnel and controls the manner in which the bandwidth for a tunnel is adjusted.
Step 5	exit Example: Router(config-if)# exit	Exits to global configuration mode.
Step 6	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Configuring the Interval for Computing the Tunnel Average Output Rate

SUMMARY STEPS

1. enable

2. configure terminal

3. interface tunnel number

4. load-interval seconds

5. exit

6. exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	enable Example: Router> enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2	configure terminal Example: Router# configure terminal	Enters global configuration mode.
Step 3	interface tunnel number Example: Router(config)# interface tunnel 1	Configures a tunnel interface and enters interface configuration mode.
Step 4	load-interval seconds Example: Router(config-if)# load-interval 90	Configures the interval over which the input and output rates for the interface are averaged. The seconds argument is the length of time for which data is used to compute load statistics. The value is a multiple of 30, from 30 to 600 (30, 60, 90, 120, and so on). The default is 300.
Step 5	exit Example: Router(config-if)# exit	Exits to global configuration mode.
Step 6	exit Example: Router(config)# exit	Exits to privileged EXEC mode.

Verifying Automatic Bandwidth Configuration

SUMMARY STEPS

1. show mpls traffic-eng tunnels

2. show running-config

DETAILED STEPS

Step 1

show mpls traffic-eng tunnels

Use this command to display information about tunnels, including automatic bandwidth information for tunnels that have the feature enabled. For example:

Example:

Router# show mpls traffic-eng tunnels
Name:tagsw4500-9_t1 (Tunnel1) Destination:10.0.0.4
Status:
Admin:up Oper:up Path:valid Signalling:connected
path option 1, type explicit pbr_south (Basis for Setup, path weight 30)
path option 2, type dynamic
Config Parameters:
Bandwidth:13 kbps (Global) Priority:7 7 Affinity:0x0/0xFFFF
AutoRoute: disabled LockDown:disabled Loadshare:13 bw-based
auto-bw:(300/265) 53 Bandwidth Requested: 13
   Adjustment threshold: 5%
   Overflow Limit: 4  Overflow Threshold: 25%  
  Overflow Threshold Crossed: 1
  Sample Missed: 1 Samples Collected: 1
Active Path Option Parameters:
  State: dynamic path option 1 is active
  BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled
 InLabel  :  -
 OutLabel : Serial3/0, 18
 RSVP Signalling Info:
   Src 10.0.0.1, Dst 10.0.0.4, Tun_Id 2, Tun_Instance 2
  RSVP Path Info:
   My Address: 10.105.0.1
   Explicit Route: 10.105.0.2 104.105.0.1 10.0.0.4
   Record   Route:   NONE
   Tspec: ave rate=13 kbits, burst=1000 bytes, peak rate=13 kbits
 Record   Route:   NONE
   Tspec: ave rate=13 kbits, burst=1000 bytes, peak rate=13 kbits
  RSVP Resv Info:
   Record   Route:   NONE
   Fspec: ave rate=13 kbits, burst=1000 bytes, peak rate=13 kbits
  Shortest Unconstrained Path Info:
   Path Weight: 128 (TE)
   Explicit Route: 10.105.0.2 104.105.0.1 10.0.0.4
  History:
   Tunnel:
    Time since created: 7 minutes, 56 seconds
     Time since path change: 7 minutes, 18 seconds
     Number of LSP IDs (Tun_Instances) used: 2
     Number of Auto-bw Adjustment resize requests: 1
     Time since last Auto-bw Adjustment resize request: 1 minutes, 7 seconds
     Number of Auto-bw Overflow resize requests: 1
     Time since last Auto-bw Overflow resize request: 52 seconds
     Current LSP:
      Uptime: 52 seconds
      Selection: reoptimization
    Prior LSP:
ID: path option 1 [1]
  Removal Trigger: configuration changed

In the command output:

The auto-bw line indicates that automatic bandwidth adjustment is enabled for the tunnel.
300 is the time, in seconds, between bandwidth adjustments.
265 is the time, in seconds, remaining until the next bandwidth adjustment.
53 is the largest bandwidth sample since the last bandwidth adjustment.
13 is the last bandwidth adjustment and the bandwidth currently requested for the tunnel.
The adjustment threshold is 5 percent.
The overflow limit is 4.
The overflow threshold is 25 percent.
The overflow crossed is 1.

Example:

Step 2

show running-config

Use this command to verify that the tunnel mpls traffic-eng auto bw command is as you expected. For example:

Example:

Router# show running-config
.
.
.
interface tunnel1
  ip unnumbered loopback 0
  tunnel destination 192.168.17.17 255.255.255.0
  tunnel mode mpls traffic-eng
  tunnel mpls traffic-eng bandwidth 1500
  tunnel mpls traffic-eng priority 1 1
  tunnel mpls traffic-eng path-option 1 dynamic

tunnel mpls traffic-eng auto bw max-bw 2000 min-bw 1000 !Enable automatic bandwidth

Example:

.
.
.

The sample output from the show running-config command shows that the value 1500, in the tunnel mpls traffic-eng bandwidth 1500 command, changes after an adjustment is made.

Example:

Configuration Examples for MPLS TE Automatic Bandwidth Adjustments for TE Tunnels

The figure below illustrates a sample MPLS topology. The following sections contain sample configuration examples to configure automatic bandwidth adjustment for MPLS TE tunnels originating on Router 1 and to enable automatic bandwidth adjustment for Tunnel 1.

Figure 1. Sample MPLS Traffic Engineering Tunnel Configuration

The examples omit some configuration required for MPLS TE, such as the required RSVP and Interior Gateway Protocol (IGP) (IS-IS or OSPF) configuration, because the purpose of these examples is to illustrate the configuration for automatic bandwidth adjustment.

Example: Configuring MPLS Traffic Engineering Automatic Bandwidth
Example: Tunnel Configuration for Automatic Bandwidth

Example: Configuring MPLS Traffic Engineering Automatic Bandwidth

The following example shows how to use the mpls traffic-eng auto-bw timers command to enable automatic bandwidth adjustment for Router 1. The command specifies that the output rate is to be sampled every 10 minutes for tunnels configured for automatic bandwidth adjustment.

configure terminal
!
ip cef distributed
mpls traffic-eng tunnels
mpls traffic-eng auto-bw timers frequency 600  !Enable automatic bandwidth adjustment
interface loopback 0
ip address 192.168.11.11 255.255.255.0

Example: Tunnel Configuration for Automatic Bandwidth

The following example shows how to use the tunnel mpls traffic-eng auto-bw command to enable automatic bandwidth adjustment for Tunnel 1. The command specifies a maximum allowable bandwidth of 2000 kbps, a minimum allowable bandwidth of 1000 kbps, and that the default automatic bandwidth adjustment frequency of once a day be used.

interface tunnel1
  ip unnumbered loopback 0
  tunnel destination 192.168.17.17 
  tunnel mode mpls traffic-eng
  tunnel mpls traffic-eng bandwidth 1500
  tunnel mpls traffic-eng priority 1 1
  tunnel mpls traffic-eng path-option 1 dynamic
  tunnel mpls traffic-eng auto-bw max-bw 2000 min-bw 1000   !Enable automatic bandwidth
                                                            !adjustment for Tunnel1

Additional References

Related Topic	Document Title
IS-IS and OSPF commands	Cisco IOS IP Routing Protocols Command Reference
MPLS commands	Cisco IOS Multiprotocol Label Switching Command Reference
Quality of service solutions commands	Cisco IOS Quality of Service Solutions Command Reference
Quality of service solutions configuration	Quality of Service Overview

Standards

Standard	Title
No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.	--

MIBs

MIB	MIBs Link
MPLS Traffic Engineering MIB	To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: http://www.cisco.com/go/mibs

MIB

MIBs Link

MPLS Traffic Engineering MIB

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC	Title
No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified.	--

Technical Assistance

Description	Link
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.	http://www.cisco.com/techsupport

Description

Link

The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

http://www.cisco.com/techsupport

Feature Information for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Table 1 Feature Information for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels
Feature Name	Releases	Feature Information
MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels	12.2(33)SRE Cisco IOS XE Release 3.8S Cisco IOS XE Release 3.9S	The MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels feature provides the means to automatically adjust the bandwidth allocation for traffic engineering tunnels based on their measured traffic load. The configured bandwidth in the running configuration is changed due to the automatic bandwidth behavior. In Cisco IOS Release 12.2(33)SRE, this feature was introduced. In Cisco IOS XE Release 3.8S, support was added for the Cisco ISR 4400 Series Routers. In Cisco IOS XE Release 3.9S, support was added for the Cisco CSR 1000V. The following commands were introduced or modified to support automatic bandwidth adjustment threshold and overflow threshold: mpls traffic-eng lsp attributes, show mpls traffic-eng tunnels, tunnel mpls traffic-eng auto-bw.

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MPLS Traffic Engineering Path Calculation and Setup Configuration Guide, Cisco IOS XE Release 3S

Results

Chapter: MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels

MPLS Traffic Engineering Automatic Bandwidth Adjustment for TE Tunnels

Finding Feature Information

Prerequisites for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

Restrictions for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

Information About MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Overview

MPLS TE Automatic Bandwidth Adjustment for TE Tunnels Benefits

How to Configure MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

Configuring a Device to Support Traffic Engineering Tunnels

Configuring IS-IS or OSPF for MPLS Traffic Engineering

Configuring IS-IS for MPLS Traffic Engineering

Configuring OSPF for MPLS Traffic Engineering

Configuring Bandwidth on Each Link That a Tunnel Crosses

Configuring an MPLS Traffic Engineering Tunnel

Troubleshooting Tips

Enabling Automatic Bandwidth Adjustment on a Platform

Enabling Automatic Bandwidth Adjustment for a Tunnel

Configuring the Interval for Computing the Tunnel Average Output Rate

Verifying Automatic Bandwidth Configuration

Configuration Examples for MPLS TE Automatic Bandwidth Adjustments for TE Tunnels

Example: Configuring MPLS Traffic Engineering Automatic Bandwidth

Example: Tunnel Configuration for Automatic Bandwidth

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Feature Information for MPLS TE Automatic Bandwidth Adjustment for TE Tunnels

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