CAC for IPv6 Flows
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CAC for IPv6 Flows

Last Updated: July 24, 2012

The CAC for IPv6 Flows feature provides IPv6 support for Resource Reservation Protocol (RSVP). By enabling this feature, the network is made to support the complete RSVP IPv6 functionality for Call Admission Control (CAC) and Medianet.

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 at the end of this module.

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 CAC for IPv6 Flows

You must configure RSVP on one or more interfaces on at least two neighboring routers that share a link within the network.

Restrictions for CAC for IPv6 Flows

  • The RSVP functionality is not High Availability (HA) compliant; hence, the CAC for IPv6 Flows feature is noncompliant with HA.

  • Multiprotocol Label Switching (MPLS) virtual private network (VPN) Virtual Routing and Forwarding (VRF) instances are not supported.

Information About CAC for IPv6 Flows

The CAC for IPv6 Flows feature provides IPv6 support for RSVP, which allows, services that run RSVP as a transport protocol such as CAC, TE, mediatrace, and medianet, to be IPv6 compliant.

RSVP signaling can be initiated and terminated by the following entities:

  • RSVP at the endpoint
  • RSVP source or receiver proxy
  • RSVP agent or application server
  • RSVP proxy from the network device (router or switch)

To enable the CAC for IPv6 Flows feature, the endpoints and application servers are designed to be IPv6 systems that signal RSVP to the network.

Differences Between IPv4 and IPv6 Flows

Following are the differences between IPv4 and IPv6 flows in an RSVP network:
  • For general routing purposes, global IPv6 addresses are not required on all intermediate devices. Link local adddresses are used instead. However, global IPv6 addresses are required on ingress and egress interfaces.
  • Link local addresses are used for neighbor authentication in an IPv6 network as opposed to how global IP addresses are used in an IPv4 network.

IPv6 Support for RSVP Features

The CAC for IPv6 Flows feature extends IPv6 support to the following RSVP features:

  • CAC
  • Transport Protocol
  • RSVP policy support for global and interface configuration modes, except access control list (ACL) support
  • RSVP authentication, except ACL support
  • Previous hop (PHOP) overwrite in interface configuration mode
  • Fast Local Repair (FLR)
  • Ingress CAC
  • Flexible bandwidth
  • Virtual Routing and Forwarding (VRF)
  • RSVP reliable messaging
  • Flow Metadata

For more information about each of these features, see QoS: RSVP Configuration Guide.

How to Configure CAC for IPv6 Flows

Adding Senders or Receivers for IPv6 Flows to the RSVP Database

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ipv6 rsvp sender session-ipv6-address sender-ipv6-address [tcp | udp | ip-protocol] session-dest-port sender-source-port previous-hop-ipv6-address previous-hop-interface bandwidth burst-size

4.    ipv6 rsvp reservation session-ipv6-address sender-ipv6-address [tcp | udp | ip-protocol] session-dest-port sender-source-port next-hop-ipv6-address next-hop-interface {ff | se | wf} {rate | load} bandwidth burst-size

5.    end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
ipv6 rsvp sender session-ipv6-address sender-ipv6-address [tcp | udp | ip-protocol] session-dest-port sender-source-port previous-hop-ipv6-address previous-hop-interface bandwidth burst-size


Example:

Device(config)# ipv6 rsvp sender 2001:DB8:1:: 2001:DB8:2:: tcp 2 3 2001:DB8::1 fastEthernet 0/1 2 3

 

Adds senders to the RSVP database.

  • Enables a networking device to behave like it is receiving and processing IPv6 RSVP PATH messages from the sender or previous hop routes containing the indicated attributes.
  • The related ipv6 rsvp sender-host command enables a device to simulate a host generating IPv6 RSVP PATH messages. It is used mostly for debugging and testing purposes.
 
Step 4
ipv6 rsvp reservation session-ipv6-address sender-ipv6-address [tcp | udp | ip-protocol] session-dest-port sender-source-port next-hop-ipv6-address next-hop-interface {ff | se | wf} {rate | load} bandwidth burst-size


Example:

Device(config)# ipv6 rsvp reservation 2001:DB8:1:: 2001:DB8::2 tcp 2 3 2001:DB8::3 fastEthernet 0/1 ff load 2 4

 

Adds receivers to the RSVP database and enables a device to behave like it is receiving and processing IPv6 RSVP RESV messages.

  • The related ipv6 rsvp reservation-host command enables a device to simulate a host generating RSVP RESV messages. It is used mostly for debugging and testing purposes.
 
Step 5
end


Example:

Device(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Configuring a Static Sender for IPv6 Flows

Perform this task to configure a static sender for IPv6 flows with a VRF on a headend device, to make the device proxy an IPv6 RSVP PATH message.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ipv6 rsvp sender-host session-ipv6-address sender-ipv6-address {tcp | udp | ip-protocol} session-destination-port sender-source-port bandwidth burst-size [identity alias] [vrf vrf-name]

4.    end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
ipv6 rsvp sender-host session-ipv6-address sender-ipv6-address {tcp | udp | ip-protocol} session-destination-port sender-source-port bandwidth burst-size [identity alias] [vrf vrf-name]


Example:

Device(config)# ipv6 rsvp sender-host 2001:DB8:1:: 2001:DB8:2:: udp 1 1 10 10 vrf myvrf

 

Enables a networking device to simulate a host generating IPv6 RSVP PATH messages.

  • The optional identity aliasidentity alias keyword and argument pair specifies an application ID alias. The string can have as many as 64 printable characters (in the range 0x20 to 0x7E).

Note   If you use the quotation marks (" ") or a question mark (?) as part of the alias string, you must type the CTRL/V key sequence before entering the embedded " " or ? characters. The alias is never transmitted to other networking devices.
 
Step 4
end


Example:

Device(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Configuring a Static Receiver for IPv6 Flows

Perform this task to configure a static RSVP receiver with an application ID to make the device proxy an IPv6 RSVP RESV message containing an application ID on behalf of an RSVP-unaware receiver application.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.   Do one of the following:

  • ipv6 rsvp reservation-host session-ipv6-address sender-ipv6-address {tcp | udp | ip-protocol} session-dest-port sender-source-port {ff | se | wf} {rate | load} bandwidth burst-size [identity alias]
  • ipv6 rsvp reservation session-ipv6-address sender-ipv6-address {tcp | udp | ip-protocol} session-dest-port sender-source-port next-hop-ipv6-address next-hop-interface {ff | se | wf} {rate | load} bandwidth burst-size [identity alias]

4.    end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
Do one of the following:
  • ipv6 rsvp reservation-host session-ipv6-address sender-ipv6-address {tcp | udp | ip-protocol} session-dest-port sender-source-port {ff | se | wf} {rate | load} bandwidth burst-size [identity alias]
  • ipv6 rsvp reservation session-ipv6-address sender-ipv6-address {tcp | udp | ip-protocol} session-dest-port sender-source-port next-hop-ipv6-address next-hop-interface {ff | se | wf} {rate | load} bandwidth burst-size [identity alias]


Example:

Device(config)# ipv6 rsvp reservation-host 2001:DB8::1 2001:DB8::2 udp 20 30 se load 100 60 identity rsvp-voice



Example:

Device(config)# ipv6 rsvp reservation 2001:DB8:1:: FFFF:FFFF:: udp 20 0 172.16.4.1 Ethernet1 wf rate 350 65 identity xyz

 

Enables a device to simulate a host generating IPv6 RSVP RESV messages.

  • The optional identity alias keyword and argument pair specifies an application ID alias. The string can have as many as 64 printable characters (in the range 0x20 to 0x7E).
Note    If you use the quotation marks (" ") or a question mark (?) as part of the alias string, you must type the CTRL/V key sequence before entering the embedded " " or ? character. The alias is never transmitted to other devices.
Note    Use the ipv6 rsvp reservation-host command if the device is the destination or the ipv6 rsvp reservation command to have the device proxy on behalf of a downstream host.
 
Step 4
end


Example:

Device(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Configuring a Receiver Proxy for IPv6 Flows on a Tailend Device

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ipv6 rsvp listener [vrf vrf-name] dst {udp | tcp | any | number} {any | dst-port} {announce | reply | reject}

4.    end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
ipv6 rsvp listener [vrf vrf-name] dst {udp | tcp | any | number} {any | dst-port} {announce | reply | reject}


Example:

Device(config)# ipv6 rsvp listener vrf myvrf 2001:DB8:1:: any any reply

 

Configures an RSVP device to listen for IPv6 PATH messages.

 
Step 4
end


Example:

Device(config)# end

 

(Optional) Returns to privileged EXEC mode.

 

Configuring RSVP as a Transport Protocol for IPv6 Flows

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ipv6 rsvp transport client client-id

4.    ipv6 rsvp transport sender-host [tcp | udp] destination-ipv6-address source-ipv6-address ip-protocol dest-port source-port client-id init-id instance-id [vrf vrf-name] [data data-value]

5.    end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
ipv6 rsvp transport client client-id


Example:

Device(config)# ipv6 rsvp transport client 2

 

Registers an RSVP transport client ID with RSVP for IPv6 flows.

  • This command is used for debugging and testing.
 
Step 4
ipv6 rsvp transport sender-host [tcp | udp] destination-ipv6-address source-ipv6-address ip-protocol dest-port source-port client-id init-id instance-id [vrf vrf-name] [data data-value]


Example:

Device(config)# ipv6 rsvp transport sender-host tcp 2001:DB8:10:: 2001:DB:11:: 3 4 5 2 3 4 vrf vr1

 

Creates an RSVP transport session, which enables a networking device to simulate a host generating IPv6 RSVP PATH message.

  • This command is used for debugging and testing purposes.
 
Step 5
end


Example:

Device(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Binding a Key Chain to an RSVP IPv6 Neighbor

Perform this task to bind a key chain to an RSVP IPv6 neighbor for neighbor authentication.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.   ipv6 rsvp authentication neighbor address ipv6-address key-chain key-chain-name

4.    end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
ipv6 rsvp authentication neighbor address ipv6-address key-chain key-chain-name


Example:

Device(config)# ipv6 rsvp authentication neighbor address 2001:db8:1:: 1 key-chain neighbor_V

 

Binds a key chain to an IPv6 address or to an ACL and enters key-chain mode.

 
Step 4
end


Example:

Device(config-keychain)# end

 

Returns to privileged EXEC mode.

 

Configuring PHOP for IPv6 Flows

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    interface type number

4.    ip rsvp bandwidth [interface-kbps] [single-flow-kbps]

5.    ipv6 rsvp source {address ipv6-address | interface type number}

6.   end


DETAILED STEPS
 Command or ActionPurpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
interface type number


Example:

Device(config)# interface Ethernet0/0

 

Configures the interface type and enters interface configuration mode.

 
Step 4
ip rsvp bandwidth [interface-kbps] [single-flow-kbps]


Example:

Device(config-if)# ip rsvp bandwidth

 

Enables RSVP on an interface.

  • The optional interface-kbps and single-flow-kbps arguments specify the amount of bandwidth that can be allocated by RSVP flows or to a single flow, respectively. Values are from 1 to 10000000.
Note    Repeat this command for each interface on which you want to enable RSVP.
 
Step 5
ipv6 rsvp source {address ipv6-address | interface type number}


Example:

Device(config-if)# ipv6 rsvp source address 2001:DB8::1

 

Configures an RSVP device to populate an address other than the native interface address in the PHOP address field of the hop object when forwarding a PATH message onto that interface.

Note    The source IPv6 address that you configure should be a valid local IP address.
 
Step 6
end


Example:

Device(config-if)# end

 

Returns to privileged EXEC mode.

 

Configuration Examples for CAC for IPv6 Flows

Example: Entering Senders or Receivers for IPv6 Flows to the RSVP Database

The following example shows how to add senders or receivers for IPv6 flows to the RSVP database: 

        
Device> enable
Device# configure terminal
Device(config)# ipv6 rsvp sender 2001:DB8:1:: 2001:DB8:2:: tcp 2 3 2001:DB8::1 fastEthernet 0/1 2 3
Device(config)# ipv6 rsvp reservation 2001:DB8:1:: 2001:DB8::2 tcp 2 3 2001:DB8::3 fastEthernet 0/1 ff load 2 4
Device(config)# end

Example: Configuring a Static Sender for IPv6 Flows

The following example shows how to configure a static sender for IPv6 flows: 

Device> enable
Device# configure terminal
Device(config)# ipv6 rsvp sender-host 2001:DB8:1:: 2001:DB8:2:: udp 1 1 10 10 vrf myvrf
Device(config)# end

Example: Configuring a Static Receiver for IPv6 Flows

The following example shows how to configure a static receiver for IPv6 flows: 

Device> enable
Device# configure terminal
Device(config)# ipv6 rsvp reservation-host 2001:DB8::1 2001:DB8::2 udp 20 30 se load 100 60 identity rsvp-voice 
Device(config)# end

Example: Configuring a Receiver Proxy for IPv6 Flows on a Tailend Device

The following example shows how to configure a receiver proxy for IPv6 flows on a tailend device: 

Device> enable
Device# configure terminal
Device(config)# ipv6 rsvp listener vrf myvrf 2001:DB8:1:: any any reply
Device(config)# end

Example: Configuring RSVP as a Transport Protocol for IPv6 Flows

The following example shows how to configure RSVP as transport protoocol for IPv6 flows: 

Device> enable
Device# configure terminal
Device(config)# ipv6 rsvp transport client 2
Device(config)# ipv6 rsvp transport sender-host tcp 2001:DB8:10:: 2001:DB:11:: 3 4 5 2 3 4 vrf vrf1
Device(config)# end

Example: Binding a Key Chain to an RSVP IPv6 Neighbor

The following example shows how to bind a key chain to an RSVP IPv6 neighbor: 

Device> enable
Device# configure terminal
Device(config)# ipv6 rsvp authentication neighbor access-list 1 key-chain neighbor_V
Device(config)# end

Example: Configuring PHOP for IPv6 Flows

The following example shows how to configure PHOP for IPv6 flows: 

Device# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Device(config)# interface ethernet 1/0
Device(config-if)# ipv6 rsvp source address 2001:DB8::1
Device(config-if)# end

Additional References

Related Documents

Related Topic Document Title

Cisco IOS commands

Master Commands List, All Releases

RSVP commands

Quality of Service Command Reference

Configuring RSVP, RSVP-PHOP, RSVP Fast Local Repair, RSVP Message Authentication and other related RSVP features

QoS: RSVP Configuration Guide

MIBs

MIB MIBs Link
None

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

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

Technical Assistance

Description Link

The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html

Feature Information for CAC for IPv6 Flows

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.

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.

Table 1Feature Information for CAC for IPv6 Flows
Feature Name Releases Feature Information

CAC for IPv6 Flows

15.2(3)T

The CAC for IPv6 Flows feature provides IPv6 support for RSVP. By enabling this feature, the network is made to support the complete RSVP IPv6 functionality for CAC and Medianet.

The following commands were introduced or modified: clear ipv6 rsvp authentication, clear ipv6 rsvp reservation, clear ipv6 rsvp sender, ip rsvp bandwidth, ip rsvp listener outbound, ip rsvp signaling rate-limit, ipv6 rsvp sender, ipv6 rsvp sender-host, ipv6 rsvp source, ipv6 rsvp listener, ipv6 rsvp reservation, ipv6 rsvp reservation-host, ipv6 rsvp transport sender-host, show ipv6 rsvp authentication, show ipv6 rsvp host, show ipv6 rsvp installed, show ipv6 rsvp listeners, show ipv6 rsvp neighbor, show ipv6 rsvp request, show ipv6 signaling blockade, show ipv6 rsvp transport sender.

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

© 2012 Cisco Systems, Inc. All rights reserved.