Cisco Mobile Networks Tunnel Templates for Multicast

The Cisco Mobile Networks--Tunnel Templates for Multicast feature allows the configuration of multicast on statically created tunnels to be applied to dynamic tunnels brought up on the home agent and mobile router. A tunnel template is defined and applied to the tunnels between the home agent and mobile router. The mobile router can now roam and the tunnel template enables multicast sessions to be carried to the mobile networks.

Feature Specifications for Cisco Mobile Networks-Tunnel Templates for Multicast

Feature History

Release

Modification

12.2(15)T

This feature was introduced.

Supported Platforms

For platforms supported in Cisco IOS Release 12.2(15)T, consult Cisco Feature Navigator.

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 https://cfnng.cisco.com/. An account on Cisco.com is not required.

Prerequisites for Cisco Mobile Networks Tunnel Templates for Multicast

Reverse tunneling must be enabled from the mobile router to the home agent.

Restrictions for Cisco Mobile Networks Tunnel Templates for Multicast

Tunnels cannot be removed if they are being used as templates.

How to Configure Tunnel Templates for Multicast

Applying the Tunnel Template on the Home Agent

This task describes how to apply the tunnel template to the tunnels brought up at the home agent.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. ip multicast-routing
  4. interface tunnel interface-number
  5. ip pim sparse-mode
  6. exit
  7. router mobile
  8. exit
  9. ip mobile mobile-networks
  10. template tunnel interface-number
  11. end
  12. show ip mobile tunnel

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 multicast-routing

Example:


Router(config)# ip multicast-routing

Enables IP multicast routing.

Step 4

interface tunnel interface-number

Example:


Router(config)# interface tunnel 100

Designates a tunnel interface and enters interface configuration mode.

  • This is the tunnel template that will be applied to the mobile networks.

Step 5

ip pim sparse-mode

Example:


Router(config-if)# ip pim sparse-mode

Enables Protocol Independent Multicast (PIM) on the tunnel interface in sparse mode.

Step 6

exit

Example:


Router(config-if)# exit

Returns to global configuration mode.

Step 7

router mobile

Example:


Router(config)# router mobile

Enables Mobile IP on the router.

Step 8

exit

Example:


Router(config-router)# exit

Returns to global configuration mode.

Step 9

ip mobile mobile-networks

Example:


Router(config)# ip mobile mobile-networks

Configures mobile networks for the mobile host and enters mobile networks configuration mode.

Step 10

template tunnel interface-number

Example:


Router(mobile-networks)# template tunnel 100

Designates the tunnel template to apply during registration.

  • The interface-number argument is set to the tunnel template defined in Step 4.

Step 11

end

Example:


Router(mobile-networks)# end

Exits to privileged EXEC mode.

Step 12

show ip mobile tunnel

Example:


Router# show ip mobile tunnel

Displays active tunnels.

  • Use this command to verify the configuration.

Examples

The following example displays the active Mobile IP tunnels and the template configuration for the tunnel on the home agent: 


Router# show ip mobile tunnel
Mobile Tunnels:
Total mobile ip tunnels 2 
Tunnel1:
    src 1.1.1.1, dest 20.20.0.1 
    encap IP/IP, mode reverse-allowed, tunnel-users 1 
    IP MTU 1460 bytes 
    Path MTU Discovery, mtu:0, ager:10 mins, expires:never 
    outbound interface Tunnel0 
    HA created, fast switching enabled, ICMP unreachable enabled 
    27 packets input, 2919 bytes, 0 drops 
    24 packets output, 2568 bytes 
Running template configuration for this tunnel:
ip pim sparse-dense-mode 
Tunnel0:
    src 1.1.1.1, dest 30.30.10.2 
    encap IP/IP, mode reverse-allowed, tunnel-users 1 
    IP MTU 1480 bytes 
    Path MTU Discovery, mtu:0, ager:10 mins, expires:never 
    outbound interface Ethernet1/3 
    HA created, fast switching enabled, ICMP unreachable enabled 
    0 packets input, 0 bytes, 0 drops 
    24 packets output, 3048 bytes

Applying the Tunnel Template on the Mobile Router

This task describes how to apply the tunnel template to the tunnels brought up at the mobile router.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. ip multicast-routing
  4. interface tunnel interface-number
  5. ip pim sparse-mode
  6. exit
  7. router mobile
  8. exit
  9. ip mobile router
  10. template tunnel interface-number
  11. end
  12. show ip mobile tunnel

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 multicast-routing

Example:


Router(config)# ip multicast-routing

Enables IP multicast routing.

Step 4

interface tunnel interface-number

Example:


Router(config)# interface tunnel 100

Designates a tunnel interface and enters interface configuration mode.

  • This is the tunnel template that will be applied to the mobile networks.

Step 5

ip pim sparse-mode

Example:


Router(config-if)# ip pim sparse-mode

Enables PIM on the tunnel interface in sparse mode.

Step 6

exit

Example:


Router(config-if)# exit

Returns to global configuration mode.

Step 7

router mobile

Example:


Router(config)# router mobile

Enables Mobile IP on the router.

Step 8

exit

Example:


Router(config-router)# exit

Returns to global configuration mode.

Step 9

ip mobile router

Example:


Router(config)# ip mobile router

Enables the mobile router and enters mobile router configuration mode.

Step 10

template tunnel interface-number

Example:


Router(mobile-router)# template tunnel 100

Designates the tunnel template to apply during registration.

  • The interface number argument is set to the tunnel template defined in Step 4.

Step 11

end

Example:


Router(mobile-router)# end

Exits to privileged EXEC mode.

Step 12

show ip mobile tunnel

Example:


Router# show ip mobile tunnel

Displays active tunnels.

  • Use this command to verify the configuration.

Examples

The following example displays the active Mobile IP tunnels and the template configuration for the tunnel on the mobile router: 


Router# show ip mobile tunnel
Mobile Tunnels:
Total mobile ip tunnels 1 
Tunnel0:
    src 20.20.0.1, dest 1.1.1.1 
    encap IP/IP, mode reverse-allowed, tunnel-users 1 
    IP MTU 1480 bytes 
    Path MTU Discovery, mtu:0, ager:10 mins, expires:never 
    outbound interface Ethernet4/2 
    MR created, fast switching enabled, ICMP unreachable enabled 
    22 packets input, 2468 bytes, 0 drops 
    27 packets output, 2892 bytes 
Running template configuration for this tunnel:
ip pim sparse-mode

Configuration Examples for Tunnel Templates for Multicast

Tunnel Templates for Multicast Example

In the following example, a tunnel template is defined and configured to be brought up at the home agent and mobile router. The foreign agent does not require any additional configuration to support the Cisco Mobile Networks--Tunnel Templates for Multicast feature.

Home Agent Configuration


! 
ip multicast-routing 
! 
interface Loopback0 
 ip address 1.1.1.1 255.255.255.255 
 ip pim sparse-mode 
! 
! 
! Tunnel template to be applied to mobile networks
interface tunnel100 
 ip address 13.0.0.1 255.0.0.0 
 ip pim sparse-mode 
! 
! 
router mobile 
ip mobile mobile-networks 11.1.0.1 
 description jet 
 network 11.1.2.0 255.255.255.0 
 network 11.1.1.0 255.255.255.0 
! Select tunnel template to apply during registration 
 template tunnel100 
! 
ip mobile secure host 11.1.0.1 spi 101 key hex 12345678123456781234567812345678 algorithm md5 mode prefix-suffix 
! 
no ip mobile tunnel route-cache 
!

Mobile Router Configuration


! 
ip multicast-routing 
! 
interface Loopback0 
 ip address 11.1.0.1 255.255.255.255 
 ip pim sparse-mode 
! 
! 
! Tunnel template to be applied to mobile networks
interface tunnel 100 
 no ip address 
 ip pim sparse-mode 
! 
! 
interface Ethernet1/1 
 ip address 20.0.0.1 255.0.0.0 
 ip pim sparse-mode 
 ip mobile router-service roam 
! 
router mobile 
ip pim rp-address 7.7.7.7 
ip mobile secure home-agent 1.1.1.1 spi 102 key hex 23456781234567812345678123456781 algorithm md5 mode prefix-suffix 
ip mobile router 
 address 11.2.0.1 255.255.0.0 
 home-agent 1.1.1.1 
! Select tunnel template to apply during registration
 template tunnel 100 
 register extend expire 5 retry 2 interval 15 
 register lifetime 10000 
 reverse-tunnel 
!

Additional References

For additional information related to Cisco Mobile Networks--Tunnel Templates for Multicast, see the following sections:

Related Documents

Related Topic

Document Title

Mobile IP configuration tasks

"Configuring Mobile IP" chapter in the Cisco IOS IP Configuration Guide, Release 12.2

Mobile IP commands: complete command syntax, command mode, defaults, usage guidelines, and examples

"Mobile IP Comman ds" chapter in the Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services, Release 12.2

Multicast configuration tasks

"Configuring IP Multicast Routing" chapter in the Cisco IOS IP Configuration Guide, Release 12.2

Multicast commands: complete command syntax, command mode, defaults, usage guidelines, and examples

"IP Multicast Routing Commands" chapter in the Cisco IOS IP Command Reference, Volume 3 of 3: Multicast, Release 12.2

Mobile IP commands related to Cisco Mobile Networks

Cisco Mobile Networks feature document, Releases 12.2(4)T and 12.2(13)T.

Standards

Standards

Title

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

--

MIBs

MIBs

MIBs Link

None

To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL:

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

RFCs

RFCs

Title

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

--

Technical Assistance

Description

Link

Technical Assistance Center (TAC) home page, containing 30,000 pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.

http://www.cisco.com/public/support/tac/home.shtml

Command Reference

The following commands are introduced or modified in the feature or features documented in this module. For information about these commands, see the Cisco IOS IP Mobility Command Reference at http://www.cisco.com/en/US/docs/ios/ipmobility/command/reference/imo_book.html. For information about all Cisco IOS commands, go to the Command Lookup Tool at http://tools.cisco.com/Support/CLILookup or to the Cisco IOS Master Commands List .

  • show ip mobile tunnel

  • template tunnel (mobile networks)

  • template tunnel (mobile router)

Glossary

home agent --A router on a home network of the mobile node or that tunnels packets to the mobile node or mobile router while they are away from home. It keeps current location information for registered mobile nodes called a mobility binding .

mobile network --A network that moves with the mobile router. A mobile network is a collection of hosts and routes that are fixed with respect to each other but are mobile, as a unit, with respect to the rest of the Internet.

mobile router --A mobile node that is a router. It provides for the mobility of one or more entire networks moving together, perhaps on an airplane, a ship, a train, an automobile, a bicycle, or a kayak. The nodes connected to a network served by the mobile router may themselves be fixed nodes or mobile nodes or routers.


Note

Refer to Internetworking Terms and Acronyms for terms not included in this glossary.