Published On: August 3ʳᵈ, 2020 06:05

IP Multicast Routing Configuration Guide, Cisco IOS XE Amsterdam 17.3.x (Catalyst 9500 Switches)

Prerequisites for MVPNv6

  • BGP must be configured and operational on all devices sending or receiving multicast traffic.

  • BGP extended communities must be enabled to support the use of Multicast Distribution Trees (MDTs) in the network. Use the neighbor send-community both or neighbor send-community extended command to enable BGP extended communities.

  • VPN routing and forwarding (MVRF) instances to be used for MVPNv6 must be configured on the PE devices.

Restrictions for MVPNv6

  • Point-to-point GRE tunnel as an output interface in a VRF for MVPNv6 is not supported.

  • This feature is not supported on the C9500-32C, C9500-32QC, C9500-48Y4C, and C9500-24Y4C models of the Cisco Catalyst 9500 Series Switches.

Information about MVPNv6

To provide Layer 3 multicast services to customers with multiple distributed sites, service providers need a secure and scalable mechanism to transmit multicast traffic across the service-provider network. IPv4 Multicast VPN (MVPN) provides such services for IPv4 multicast traffic over a shared service provider backbone.

IPv6 Multicast Virtual Private Network (MVPNv6) provides the same services for IPv6 traffic, enabling service providers to provide multicast-enabled private IPv6 networks to their customers using their existing IPv4 back bone. The IPv4 and IPv6 VPN traffic is carried over the same tunnels simultaneously.

How to Configure MVPNv6

Configuring Multicast Routing

Perform this task to enable IPv4 and IPv6 multicast routing for the multicast VPN routing and forwarding (MVRF) instance to be used for MVPNv6.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. ip routing
  4. ip routing vrf vrf-name
  5. ipv6 routing
  6. ipv6 routing vrf vrf-name
  7. exit

DETAILED STEPS

  Command or Action Purpose
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

ip routing

Example:

Device(config)# ip routing

Enables IPv4 multicast routing.

Step 4

ip routing vrf vrf-name

Example:

Device(config)# ip routing vrf blue

Enables IPv4 multicast routing for the specified MVRF instance.

Step 5

ipv6 routing

Example:

Device(config)# ipv6 routing

Enables IPv6 multicast routing.

Step 6

ipv6 routing vrf vrf-name

Example:

Device(config)# ipv6 routing vrf blue

Enables IPv6 multicast routing for the specified MVRF instance.

Step 7

exit

Example:

Device(config)# exit

Exits global configuration mode.

Configuring MVRF on PE Devices

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. interface type number
  4. vrf forwarding vrf-name
  5. ip address ip-address mask
  6. ip pim sparse-mode
  7. delay tens-of-seconds
  8. ipv6 address ipv6-address link-local
  9. ipv6 address ipv6-address-prefix
  10. ipv6 pim
  11. exit
  12. ip pim rp-address ip-address
  13. ip pim vrf vrf-name rp-address address
  14. ipv6 pim vrf vrf-name rp-address ipv6-address
  15. exit

DETAILED STEPS

  Command or Action Purpose
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 GigabitEthernet 3/0/3

Enters interface configuration mode.

Step 4

vrf forwarding vrf-name

Example:

Device(config-if)# vrf forwarding blue

Associates a VRF with the interface.

Step 5

ip address ip-address mask

Example:

Device(config-if)# ip address 10.1.0.1 255.255.0.0

Configures an IPv4 address on the interface.

Step 6

ip pim sparse-mode

Example:

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

Enables Protocol Independent Multicast (PIM) on the interface.

Step 7

delay tens-of-seconds

Example:

Device(config-if)# delay 1000

Configures delay value on the interface.

Step 8

ipv6 address ipv6-address link-local

Example:

Device(config-if)# ipv6 address FE80::20:1:1 link-local 

Specifies a link-local IPv6 address.

This address is used instead of the link-local address that was automatically configured when IPv6 was enabled on the interface.

Step 9

ipv6 address ipv6-address-prefix

Example:

Device(config-if)# ipv6 address FC00::/7 

Configures an IPv6 address on the interface.

Step 10

ipv6 pim

Example:

Device(config-if)# ipv6 pim

Enables Protocol Independent Multicast (PIM) for IPv6.

Step 11

exit

Example:

Device(config-if)# exit

Exits interface configuration mode.

Step 12

ip pim rp-address ip-address

Example:

Device(config)# ip pim rp-address 10.10.10.10 

Configure the address of a PIM rendezvous point (RP) for multicast groups.

Step 13

ip pim vrf vrf-name rp-address address

Example:

Device(config)# ip pim vrf blue rp-address 10.10.0.10

Configures the IPv4 address of a PIM RP and associates the RP with the specified MVRF instance.

Step 14

ipv6 pim vrf vrf-name rp-address ipv6-address

Example:

Device(config)# ipv6 pim vrf blue rp-address FC00::1:1:1

Configures the IPv6 address of a PIM RP and associates the RP with the specified MVRF instance.

Step 15

exit

Example:

Device(config)# exit

Exits global configuration mode.

Configuring Routing Protocols Between the PE and CE Devices

Before you begin

The PE and CE devices must be configured with the same routing protocol.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. router bgp as-number
  4. address-family ipv6 vrf vrf-name
  5. redistribute connected
  6. redistribute eigrp as-number
  7. redistribute static
  8. end

DETAILED STEPS

  Command or Action Purpose
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

router bgp as-number

Example:

Device(config)# router bgp 55

Specifies the number of an autonomous system that identifies the device to other BGP devices.

Step 4

address-family ipv6 vrf vrf-name

Example:

Device(config-router)# address-family ipv6 vrf blue

Specifies the name of the VRF to associate with subsequent address family configuration mode commands.

Step 5

redistribute connected

Example:

Device(config-router-af)# redistibute connected

Redistributes the directly connected networks to BGP.

Step 6

redistribute eigrp as-number

Example:

Device(config-router-af)# redistribute eigrp 11

Redistributes the EIGRP routes into BGP.

Step 7

redistribute static

Example:

Device(config-router-af)# redistribute static

Redistribute the static routes into BGP.

Step 8

end

Example:

Device(config-router-af)# end

Returns to privileged EXEC mode.

Configuration Example for MVPNv6

The following is an example for configuring MVPNv6:

mls ipv6 vrf
!
vrf definition blue
 rd 55:1111
 route-target export 55:1111
 route-target import 55:1111
 !
 address-family ipv4
  mdt default 232.1.1.1
 exit-address-family
 !
 address-family ipv6
  mdt default 232.1.1.1
 exit-address-family
!

ip multicast-routing
ip multicast-routing vrf blue
!
!
ipv6 unicast-routing
ipv6 multicast-routing
ipv6 multicast-routing vrf blue
!

interface GigabitEthernet3/0/3
 vrf forwarding blue
 ip address 10.1.0.1 255.255.255.0
 no ip redirects
 no ip proxy-arp
 ip pim sparse-dense-mode
 delay 100
 ipv6 address FE80::20:1:1 link-local
 ipv6 address FC00::/7
 no mls qos trust
!
router bgp 55
address-family ipv6 vrf blue
  redistribute connected
  redistribute eigrp 11
  redistribute static
 exit-address-family
!

ip pim vrf blue rp-address 10.10.0.10
!
ipv6 pim vrf blue rp-address FC00::1:1:1
!
!
 

Feature Information for MVPNv6

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 1. Feature Information for MVPNv6

Feature Name

Releases

Feature Information

MVPNv6

Cisco IOS XE Gibraltar 16.11.1

This feature enables service providers to use their existing IPv4 back bone to provide multicast-enabled private IPv6 networks to their customers.

This feature was introduced on the C9500-12Q, C9500-16X, C9500-24Q, and C9500-40X models of the Cisco Catalyst 9500 Series Switches.