Example: Configuring MBGP Multicast VPN Extranets

This example provides a step-by-step procedure to configure multicast VPN extranets using static rendezvous points. It is organized in the following sections:

• Requirements
• Overview and Topology
• Configuration

Requirements

This example uses the following hardware and software components:

• Junos OS Release 9.5 or later.
• Six M Series, T Series, TX Series, or MX Series Juniper routers.
• One adaptive services PIC or MultiServices PIC in each of the M Series or T Series routers acting as PE routers.
• One host systems capable of sending multicast traffic and supporting the Internet Group Management Protocol (IGMP).
• Three host systems capable of receiving multicast traffic and supporting IGMP.

Overview and Topology

In the topology shown in Figure 50:

• Host H1 is the source for group 244.1.1.1 in the green VPN.
• The multicast traffic originating at source H1 can be received by host H4 connected to router CE2 in the green VPN.
• The multicast traffic originating at source H1 can be received by host H3 connected to router CE3 in the blue VPN.
• The multicast traffic originating at source H1 can be received by host H2 directly connected to router PE1 in the red VPN.
• Any host can be a sender site or receiver site.

The topology of the network is shown in Figure 50.

Configuration

Note: In any configuration session, it is good practice to verify periodically that the configuration can be committed using the commit check command.

In this example, the router being configured is identified using the following command prompts:

• ce1 identifies the customer edge 1 (CE1) router
• pe1 identifies the provider edge 1 (PE1) router
• ce2 identifies the customer edge 2 (CE2) router
• pe2 identifies the provider edge 2 (PE2) router
• ce3 identifies the customer edge 3 (CE3) router
• pe3 identifies the provider edge 3 (PE3) router

To configure multicast VPN extranets, perform the following tasks:

• Configuring Interfaces
• Configuring an IGP in the Core
• Configuring BGP in the Core
• Configuring LDP
• Configuring RSVP
• Configuring MPLS
• Configuring the VRF Routing Instances
• Configuring MVPN Extranet Policy
• Configuring CE-PE BGP
• Configuring PIM on the PE Routers
• Configuring PIM on the CE Routers
• Configuring the Rendezvous Points
• Testing MVPN Extranets

Configuring Interfaces

Step-by-Step Procedure

1. On each router, configure an IP address on the loopback logical interface 0 (lo0.0).
   user@ce1# set interfaces lo0 unit 0 family inet address 192.168.6.1/32 primaryuser@pe1# set interfaces lo0 unit 0 family inet address 192.168.1.1/32 primaryuser@pe2# set interfaces lo0 unit 0 family inet address 192.168.2.1/32 primaryuser@ce2# set interfaces lo0 unit 0 family inet address 192.168.4.1/32 primaryuser@pe3# set interfaces lo0 unit 0 family inet address 192.168.7.1/32 primaryuser@ce3# set interfaces lo0 unit 0 family inet address 192.168.9.1/32 primary

   Use the show interfaces terse command to verify that the correct IP address is configured on the loopback interface.

2. On the PE and CE routers, configure the IP address and protocol family on the Fast Ethernet and Gigabit Ethernet interfaces. Specify the inet address family type.
   user@ce1# set interfaces fe-1/3/0 unit 0 family inet address 10.10.12.1/24user@pe1# set interfaces fe-0/1/0 unit 0 description "to H2"user@pe1# set interfaces fe-0/1/0 unit 0 family inet address 10.2.11.2/30user@pe1# set interfaces fe-0/1/1 unit 0 description "to PE3 fe-0/1/1.0"user@pe1# set interfaces fe-0/1/1 unit 0 family inet address 10.0.17.13/30user@pe1# set interfaces ge-0/3/0 unit 0 family inet address 10.0.12.9/30user@pe2# set interfaces fe-0/1/3 unit 0 description "to PE3 fe-0/1/3.0"user@pe2# set interfaces fe-0/1/3 unit 0 family inet address 10.0.27.13/30user@pe2# set interfaces ge-1/3/0 unit 0 description "to PE1 ge-0/3/0.0"user@pe2# set interfaces ge-1/3/0 unit 0 family inet address 10.0.12.10/30user@ce2# set interfaces fe-0/1/1 unit 0 description "to H4"user@ce2# set interfaces fe-0/1/1 unit 0 family inet address 10.10.11.2/24user@pe3# set interfaces fe-0/1/1 unit 0 description "to PE1 fe-0/1/1.0"user@pe3# set interfaces fe-0/1/1 unit 0 family inet address 10.0.17.14/30user@pe3# set interfaces fe-0/1/3 unit 0 description "to PE2 fe-0/1/3.0"user@pe3# set interfaces fe-0/1/3 unit 0 family inet address 10.0.27.14/30user@ce3# set interfaces fe-0/1/0 unit 0 description "to H3"user@ce3# set interfaces fe-0/1/0 unit 0 family inet address 10.3.11.3/24

   Use the show interfaces terse command to verify that the correct IP address and address family type are configured on the interfaces.

3. On the PE and CE routers, configure the SONET interfaces. Specify the inet address family type, and local IP address.
   user@ce1# set interfaces so-0/0/3 unit 0 description "to PE1 so-0/0/3.0;"user@ce1# set interfaces so-0/0/3 unit 0 family inet address 10.0.16.1/30user@pe1# set interfaces so-0/0/3 unit 0 description "to CE1 so-0/0/3.0"user@pe1# set interfaces so-0/0/3 unit 0 family inet address 10.0.16.2/30user@pe2# set interfaces so-0/0/1 unit 0 description "to CE2 so-0/0/1:0.0"user@pe2# set interfaces so-0/0/1 unit 0 family inet address 10.0.24.1/30user@ce2# set interfaces so-0/0/1 unit 0 description "to PE2 so-0/0/1"user@ce2# set interfaces so-0/0/1 unit 0 family inet address 10.0.24.2/30user@pe3# set interfaces so-0/0/1 unit 0 description "to CE3 so-0/0/1.0"user@pe3# set interfaces so-0/0/1 unit 0 family inet address 10.0.79.1/30user@ce3# set interfaces so-0/0/1 unit 0 description "to PE3 so-0/0/1"user@ce3# set interfaces so-0/0/1 unit 0 family inet address 10.0.79.2/30

   Use the show configuration interfaces command to verify that the correct IP address and address family type are configured on the interfaces.

4. On each router, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
5. Use the ping command to verify unicast connectivity between each:
   • CE router and the attached host
   • CE router and the directly attached interface on the PE router.
   • PE router and the directly attached interfaces on the other PE routers.

Configuring an IGP in the Core

Step-by-Step Procedure

On the PE routers, configure an interior gateway protocol such as OSPF or IS-IS. This example configures Open Shortest Path First (OSPF).

1. Specify the lo0.0 and SONET core-facing logical interfaces.
   user@pe1# set protocols ospf area 0.0.0.0 interface ge-0/3/0.0 metric 100user@pe1# set protocols ospf area 0.0.0.0 interface fe-0/1/1.0 metric 100user@pe1# set protocols ospf area 0.0.0.0 interface lo0.0 passiveuser@pe1# set protocols ospf area 0.0.0.0 interface fxp0.0 disableuser@pe2# set protocols ospf area 0.0.0.0 interface fe-0/1/3.0 metric 100user@pe2# set protocols ospf area 0.0.0.0 interface ge-1/3/0.0 metric 100user@pe2# set protocols ospf area 0.0.0.0 interface lo0.0 passiveuser@pe2# set protocols ospf area 0.0.0.0 interface fxp0.0 disableuser@pe3# set protocols ospf area 0.0.0.0 interface lo0.0 passiveuser@pe3# set protocols ospf area 0.0.0.0 interface fe-0/1/3.0 metric 100user@pe3# set protocols ospf area 0.0.0.0 interface fe-0/1/1.0 metric 100user@pe3# set protocols ospf area 0.0.0.0 interface fxp0.0 disable
2. On the PE routers, configure a router ID.
   user@pe1# set routing-options router-id 192.168.1.1user@pe2# set routing-options router-id 192.168.2.1user@pe3# set routing-options router-id 192.168.7.1

   Use the show ospf overview and show configuration protocols ospf commands to verify that the correct interfaces have been configured for the OSPF protocol.

3. On the PE routers, configure OSPF traffic engineering support. Enabling traffic engineering extensions supports the Constrained Shortest Path First algorithm, which is needed to support Resource Reservation Protocol - Traffic Engineering (RSVP-TE) point-to-multipoint label-switched paths (LSPs). If you are configuring IS-IS, traffic engineering is supported without any additional configuration.
   user@pe1# set protocols ospf traffic-engineeringuser@pe2# set protocols ospf traffic-engineeringuser@pe3# set protocols ospf traffic-engineering

   Use the show ospf overview and show configuration protocols ospf commands to verify that traffic engineering support is enabled for the OSPF protocol.

4. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
5. On the PE routers, verify that the OSPF neighbors form adjacencies using the following command:
   
   

   user@PE1> show ospf neighbors

   Address         Interface            State    ID              Pri Dead
   10.0.17.14      fe-0/1/1.0           Full     192.168.7.1     128   32
   10.0.12.10      ge-0/3/0.0           Full     192.168.2.1     128   33

   Verify that the neighbor state with the other two PE routers is Full.

Configuring BGP in the Core

Step-by-Step Procedure

1. On the PE routers, configure BGP. Configure the BGP local autonomous system number.
   user@pe1# set routing-options autonomous-system 65000user@pe2# set routing-options autonomous-system 65000user@pe3# set routing-options autonomous-system 65000
2. Configure the BGP peer groups. Configure the local address as the lo0.0 address on the router. The neighbor addresses are the lo0.0 addresses of the other PE routers.

   The unicast statement enables the router to use BGP to advertise network layer reachability information (NLRI). The signaling statement enables the router to use BGP as the signaling protocol for the VPN.

   user@pe1# set protocols bgp group group-mvpn type internaluser@pe1# set protocols bgp group group-mvpn local-address 192.168.1.1user@pe1# set protocols bgp group group-mvpn family inet-vpn unicastuser@pe1# set protocols bgp group group-mvpn family inet-mvpn signalinguser@pe1# set protocols bgp group group-mvpn neighbor 192.168.2.1user@pe1# set protocols bgp group group-mvpn neighbor 192.168.7.1user@pe2# set protocols bgp group group-mvpn type internaluser@pe2# set protocols bgp group group-mvpn local-address 192.168.2.1user@pe2# set protocols bgp group group-mvpn family inet-vpn unicastuser@pe2# set protocols bgp group group-mvpn family inet-mvpn signalinguser@pe2# set protocols bgp group group-mvpn neighbor 192.168.1.1user@pe2# set protocols bgp group group-mvpn neighbor 192.168.7.1user@pe3# set protocols bgp group group-mvpn type internaluser@pe3# set protocols bgp group group-mvpn local-address 192.168.7.1user@pe3# set protocols bgp group group-mvpn family inet-vpn unicastuser@pe3# set protocols bgp group group-mvpn family inet-mvpn signalinguser@pe3# set protocols bgp group group-mvpn neighbor 192.168.1.1user@pe3# set protocols bgp group group-mvpn neighbor 192.168.2.1
3. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
4. On the PE routers, verify that the BGP neighbors form a peer session using the following command:
   
   

   user@PE1> show bgp group

   Group Type: Internal    AS: 65000                  Local AS: 65000
     Name: group-mvpn      Index: 0                   Flags: Export Eval
     Holdtime: 0
     Total peers: 2        Established: 2
     192.168.2.1+54883
     192.168.7.1+58933
     bgp.l3vpn.0: 0/0/0/0
     bgp.mvpn.0: 0/0/0/0
   
   Groups: 1 Peers: 2   External: 0   Internal: 2   Down peers: 0  Flaps: 0
   Table        Tot Paths Act Paths Suppressed  History Damp State  Pending
   bgp.l3vpn.0          0          0         0        0         0       0
   bgp.mvpn.0           0          0         0        0         0       0
   

   Verify that the peer state for the other two PE routers is Established and that the lo0.0 addresses of the other PE routers are shown as peers.

Configuring LDP

Step-by-Step Procedure

1. On the PE routers, configure LDP to support unicast traffic. Specify the core-facing Fast Ethernet and Gigabit Ethernet interfaces between the PE routers. Also configure LDP specifying the lo0.0 interface. As a best practice, disable LDP on the fxp0 interface.
   user@pe1# set protocols ldp deaggregateuser@pe1# set protocols ldp interface fe-0/1/1.0user@pe1# set protocols ldp interface ge-0/3/0.0user@pe1# set protocols ldp interface fxp0.0 disableuser@pe1# set protocols ldp interface lo0.0user@pe2# set protocols ldp deaggregateuser@pe2# set protocols ldp interface fe-0/1/3.0user@pe2# set protocols ldp interface ge-1/3/0.0user@pe2# set protocols ldp interface fxp0.0 disableuser@pe2# set protocols ldp interface lo0.0user@pe3# set protocols ldp deaggregateuser@pe3# set protocols ldp interface fe-0/1/1.0user@pe3# set protocols ldp interface fe-0/1/3.0user@pe3# set protocols ldp interface fxp0.0 disableuser@pe3# set protocols ldp interface lo0.0
2. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
3. On the PE routers, use the show ldp route command to verify the LDP route.
   
   

   user@PE1> show ldp route

   Destination         Next-hop intf/lsp                Next-hop address
    10.0.12.8/30       ge-0/3/0.0
    10.0.12.9/32      
    10.0.17.12/30      fe-0/1/1.0
    10.0.17.13/32     
    10.0.27.12/30      fe-0/1/1.0                       10.0.17.14
                       ge-0/3/0.0                       10.0.12.10
    192.168.1.1/32     lo0.0
    192.168.2.1/32     ge-0/3/0.0                       10.0.12.10
    192.168.7.1/32     fe-0/1/1.0                       10.0.17.14
    224.0.0.5/32      
    224.0.0.22/32

   Verify that a next-hop interface and next-hop address have been established for each remote destination in the core network. Notice that local destinations do not have next-hop interfaces, and remote destinations outside the core do not have next-hop addresses.

Configuring RSVP

Step-by-Step Procedure

1. On the PE routers, configure RSVP. Specify the core-facing Fast Ethernet and Gigabit Ethernet interfaces that participate in the LSP. Also specify the lo0.0 interface. As a best practice, disable RSVP on the fxp0 interface.
   user@pe1# set protocols rsvp interface ge-0/3/0.0user@pe1# set protocols rsvp interface fe-0/1/1.0user@pe1# set protocols rsvp interface lo0.0user@pe1# set protocols rsvp interface fxp0.0 disableuser@pe2# set protocols rsvp interface fe-0/1/3.0user@pe2# set protocols rsvp interface ge-1/3/0.0user@pe2# set protocols rsvp interface lo0.0user@pe2# set protocols rsvp interface fxp0.0 disableuser@pe3# set protocols rsvp interface fe-0/1/3.0user@pe3# set protocols rsvp interface fe-0/1/1.0user@pe3# set protocols rsvp interface lo0.0user@pe3# set protocols rsvp interface fxp0.0 disable
2. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete

   Verify these steps using the show configuration protocols rsvp command. You can verify the operation of RSVP only after the LSP is established.

Configuring MPLS

Step-by-Step Procedure

1. On the PE routers, configure MPLS. Specify the core-facing Fast Ethernet and Gigabit Ethernet interfaces that participate in the LSP. As a best practice, disable MPLS on the fxp0 interface.
   user@pe1# set protocols mpls interface ge-0/3/0.0user@pe1# set protocols mpls interface fe-0/1/1.0user@pe1# set protocols mpls interface fxp0.0 disableuser@pe2# set protocols mpls interface fe-0/1/3.0user@pe2# set protocols mpls interface ge-1/3/0.0user@pe2# set protocols mpls interface fxp0.0 disableuser@pe3# set protocols mpls interface fe-0/1/3.0user@pe3# set protocols mpls interface fe-0/1/1.0user@pe3# set protocols mpls interface fxp0.0 disable

   Use the show configuration protocols mpls command to verify that the ore-facing Fast Ethernet and Gigabit Ethernet interfaces are configured for MPLS.

2. On the PE routers, configure the core-facing interfaces associated with the LSP. Specify the mpls address family type.
   user@pe1# set interfaces fe-0/1/1 unit 0 family mplsuser@pe1# set interfaces ge-0/3/0 unit 0 family mplsuser@pe2# set interfaces fe-0/1/3 unit 0 family mplsuser@pe2# set interfaces ge-1/3/0 unit 0 family mplsuser@pe3# set interfaces fe-0/1/3 unit 0 family mplsuser@pe3# set interfaces fe-0/1/1 unit 0 family mpls

   Use the show mpls interface command to verify that the core-facing interfaces have the MPLS address family configured.

3. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete

   You can verify the operation of MPLS after the LSP is established.

Configuring the VRF Routing Instances

Step-by-Step Procedure

1. On Router PE1 , configure the routing instance for the green and red VPNs. Specify the vrf instance type and specify the customer-facing SONET interfaces.

   Configure a virtual tunnel (VT) interface on all MVPN routing instances on each PE where hosts in different instances need to receive multicast traffic from the same source.

   user@pe1# set routing-instances green instance-type vrfuser@pe1# set routing-instances green interface so-0/0/3.0user@pe1# set routing-instances green interface vt-1/2/0.1 multicastuser@pe1# set routing-instances green interface lo0.1user@pe1# set routing-instances red instance-type vrfuser@pe1# set routing-instances red interface fe-0/1/0.0user@pe1# set routing-instances red interface vt-1/2/0.2user@pe1# set routing-instances red interface lo0.2

   Use the show configuration routing-instances green and show configuration routing-instances red commands to verify that the virtual tunnel interfaces have been correctly configured.

2. On Router PE2 , configure the routing instance for the green VPN. Specify the vrf instance type and specify the customer-facing SONET interfaces.
   user@pe2# set routing-instances green instance-type vrfuser@pe2# set routing-instances green interface so-0/0/1.0user@pe2# set routing-instances green interface vt-1/2/0.1user@pe2# set routing-instances green interface lo0.1

   Use the show configuration routing-instances green command.

3. On Router PE3, configure the routing instance for the blue VPN. Specify the vrf instance type and specify the customer-facing SONET interfaces.
   user@pe3# set routing-instances blue instance-type vrfuser@pe3# set routing-instances blue interface so-0/0/1.0user@pe3# set routing-instances blue interface vt-1/2/0.3user@pe3# set routing-instances blue interface lo0.1

   Use the show configuration routing-instances blue command to verify that the instance type has been configured correctly and the correct interfaces have been configured in the routing instance.

4. On Router PE1, configure a route distinguisher for the green and red routing instances. A route distinguisher allows the router to distinguish between two identical IP prefixes used as VPN routes.

   Tip: To help in troubleshooting, this example configures the route distinguisher to match the router ID. This allows you to associate a route with the router that advertised it.

   user@pe1# set routing-instances green route-distinguisher 192.168.1.1:1user@pe1# set routing-instances red route-distinguisher 192.168.1.1:2
5. On Router PE2, configure a route distinguisher for the green routing instance.
   user@pe2# set routing-instances green route-distinguisher 192.168.2.1:1
6. On Router PE3, configure a route distinguisher for the blue routing instance.
   user@pe3# set routing-instances blue route-distinguisher 192.168.7.1:3
7. On the PE routers, configure the VPN routing instance for multicast support.
   user@pe1# set routing-instances green protocols mvpnuser@pe1# set routing-instances red protocols mvpnuser@pe2# set routing-instances green protocols mvpnuser@pe3# set routing-instances blue protocols mvpn

   Use the show configuration routing-instance command to verify that the route distinguisher is configured correctly and the MVPN protocol is enabled in the routing instance.

8. On the PE routers, configure an IP address on additional loopback logical interfaces. These logical interfaces are used as the loopback addresses for the VPNs.
   user@pe1# set interfaces lo0 unit 1 description "green VRF loopback"user@pe1# set interfaces lo0 unit 1 family inet address 10.10.1.1/32user@pe1# set interfaces lo0 unit 2 description "red VRF loopback"user@pe1# set interfaces lo0 unit 2 family inet address 10.2.1.1/32user@pe2# set interfaces lo0 unit 1 description "green VRF loopback"user@pe2# set interfaces lo0 unit 1 family inet address 10.10.22.2/32user@pe3# set interfaces lo0 unit 1 description "blue VRF loopback"user@pe3# set interfaces lo0 unit 1 family inet address 10.3.33.3/32

   Use the show interfaces terse command to verify that the loopback logical interfaces are correctly configured.

9. On the PE routers, configure virtual tunnel interfaces. These interfaces are used in VRF instances where multicast traffic arriving on a provider tunnel needs to be forwarded to multiple VPNs.
   user@pe1# set interfaces vt-1/2/0 unit 1 description "green VRF multicast vt"user@pe1# set interfaces vt-1/2/0 unit 1 family inetuser@pe1# set interfaces vt-1/2/0 unit 2 description "red VRF unicast and multicast vt"user@pe1# set interfaces vt-1/2/0 unit 2 family inetuser@pe1# set interfaces vt-1/2/0 unit 3 description "blue VRF multicast vt"user@pe1# set interfaces vt-1/2/0 unit 3 family inetuser@pe2# set interfaces vt-1/2/0 unit 1 description "green VRF unicast and multicast vt"user@pe2# set interfaces vt-1/2/0 unit 1 family inetuser@pe2# set interfaces vt-1/2/0 unit 3 description "blue VRF unicast and multicast vt"user@pe2# set interfaces vt-1/2/0 unit 3 family inetuser@pe3# set interfaces vt-1/2/0 unit 3 description "blue VRF unicast and multicast vt"user@pe3# set interfaces vt-1/2/0 unit 3 family inet

   Use the show interfaces terse command to verify that the virtual tunnel interfaces have the correct address family type configured.

10. On the PE routers, configure the provider tunnel.
    user@pe1# set routing-instances green provider-tunnel rsvp-te label-switched-path-template default-templateuser@pe1# set routing-instances red provider-tunnel rsvp-te label-switched-path-template default-templateuser@pe2# set routing-instances green provider-tunnel rsvp-te label-switched-path-template default-templateuser@pe3# set routing-instances blue provider-tunnel rsvp-te label-switched-path-template default-template

    Use the show configuration routing-instance command to verify that the provider tunnel is configured to use the default LSP template.

    Note: You cannot commit the configuration for the VRF instance until you configure the VRF target in the next section.

Configuring MVPN Extranet Policy

Step-by-Step Procedure

1. On the PE routers, define the VPN community name for the route targets for each VPN. The community names are used in the VPN import and export policies.
   user@pe1# set policy-options community green-com members target:65000:1user@pe1# set policy-options community red-com members target:65000:2user@pe1# set policy-options community blue-com members target:65000:3user@pe2# set policy-options community green-com members target:65000:1user@pe2# set policy-options community red-com members target:65000:2user@pe2# set policy-options community blue-com members target:65000:3user@pe3# set policy-options community green-com members target:65000:1user@pe3# set policy-options community red-com members target:65000:2user@pe3# set policy-options community blue-com members target:65000:3

   Use the show policy-options command to verify that the correct VPN community name and route target are configured.

2. On the PE routers, configure the VPN import policy. Include the community name of the route targets you want to accept. Do not include the community name of the route targets you do not want to accept. For example, omit the community name for routes from the VPN of a multicast sender from which you do not want to receive multicast traffic.
   user@pe1# set policy-options policy-statement green-red-blue-import term t1 from community green-comuser@pe1# set policy-options policy-statement green-red-blue-import term t1 from community red-comuser@pe1# set policy-options policy-statement green-red-blue-import term t1 from community blue-comuser@pe1# set policy-options policy-statement green-red-blue-import term t1 then acceptuser@pe1# set policy-options policy-statement green-red-blue-import term t2 then rejectuser@pe2# set policy-options policy-statement green-red-blue-import term t1 from community green-comuser@pe2# set policy-options policy-statement green-red-blue-import term t1 from community red-comuser@pe2# set policy-options policy-statement green-red-blue-import term t1 from community blue-comuser@pe2# set policy-options policy-statement green-red-blue-import term t1 then acceptuser@pe2# set policy-options policy-statement green-red-blue-import term t2 then rejectuser@pe3# set policy-options policy-statement green-red-blue-import term t1 from community green-comuser@pe3# set policy-options policy-statement green-red-blue-import term t1 from community red-comuser@pe3# set policy-options policy-statement green-red-blue-import term t1 from community blue-comuser@pe3# set policy-options policy-statement green-red-blue-import term t1 then acceptuser@pe3# set policy-options policy-statement green-red-blue-import term t2 then reject

   Use the show policy green-red-blue-import command to verify that the VPN import policy is correctly configured.

3. On the PE routers, apply the VRF import policy. In this example the policy is defined in a policy-statement policy, and target communities are defined under the [edit policy-options] hierarchy level.
   user@pe1# set routing-instances green vrf-import green-red-blue-importuser@pe1# set routing-instances red vrf-import green-red-blue-importuser@pe2# set routing-instances green vrf-import green-red-blue-importuser@pe3# set routing-instances blue vrf-import green-red-blue-import

   Use the show configuration routing-instances command to verify that the correct VRF import policy has been applied.

4. On the PE routers, configure VRF export targets. The vrf-target statement and export option cause the routes being advertised to be labeled with the target community.

   For Router PE3 the vrf-target statement is included without specifying the export option. If you do not specify the import or export options, default VRF import and export policies are generated that accept imported routes and tag exported routes with the specified target community.

   Note: You must configure the same route target on each PE router for a given VPN routing instance.

   user@pe1# set routing-instances green vrf-target export target:65000:1user@pe1# set routing-instances red vrf-target export target:65000:2user@pe2# set routing-instances green vrf-target export target:65000:1user@pe3# set routing-instances blue vrf-target target:65000:3

   Use the show configuration routing-instances command to verify that the correct VRF export targets have been configured.

5. On the PE routers, configure automatic exporting of routes between VRF instances. When you include the auto-export statement, the vrf-import and vrf-export policies are compared across all VRF instances. If there is a common route target community between the instances, the routes are shared. In this example, the auto-export statement must be included under all instances that need to send traffic to and receive traffic from another instance located on the same router.
   user@pe1# set routing-instances green routing-options auto-exportuser@pe1# set routing-instances red routing-options auto-exportuser@pe2# set routing-instances green routing-options auto-exportuser@pe3# set routing-instances blue routing-options auto-export
6. On the PE routers, configure the load balance policy statement. Load balancing leads to better utilization of the available links but is not required for MVPN extranets. It is included here as a best practice.
   user@pe1# set policy-options policy-statement load-balance then load-balance per-packetuser@pe2# set policy-options policy-statement load-balance then load-balance per-packetuser@pe3# set policy-options policy-statement load-balance then load-balance per-packet

   Use the show policy-options command to verify that the load balance policy statement has been correctly configured.

7. On the PE routers, apply the load balance policy.
   user@pe1# set routing-options forwarding-table export load-balanceuser@pe2# set routing-options forwarding-table export load-balanceuser@pe3# set routing-options forwarding-table export load-balance
8. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
9. On the PE routers, use the show rsvp neighbor command to verify that the RSVP neighbors are established.
   
   

   user@PE1> show rsvp neighbor

   RSVP neighbor: 2 learned
   Address            Idle Up/Dn LastChange HelloInt HelloTx/Rx MsgRcvd
   10.0.17.14            5  1/0       43:52        9   293/293  247
   10.0.12.10            0  1/0       50:15        9   336/336  140
   

   Verify that the other PE routers are listed as RSVP neighbors.

10. On the PE routers, display the MPLS LSPs using the following commands:
    
    

    user@PE1> show mpls lsp p2mp

    Ingress LSP: 2 sessions
    P2MP name: 192.168.1.1:1:mvpn:green, P2MP branch count: 2
    To              From            State Rt P     ActivePath       LSPname
    192.168.2.1     192.168.1.1     Up     0 *                      192.168.2.1:192.168.1.1:1:mvpn:green
    192.168.7.1     192.168.1.1     Up     0 *                      192.168.7.1:192.168.1.1:1:mvpn:green
    P2MP name: 192.168.1.1:2:mvpn:red, P2MP branch count: 2
    To              From            State Rt P     ActivePath       LSPname
    192.168.2.1     192.168.1.1     Up     0 *                      192.168.2.1:192.168.1.1:2:mvpn:red
    192.168.7.1     192.168.1.1     Up     0 *                      192.168.7.1:192.168.1.1:2:mvpn:red
    Total 4 displayed, Up 4, Down 0
    
    Egress LSP: 2 sessions
    P2MP name: 192.168.2.1:1:mvpn:green, P2MP branch count: 1
    To              From            State   Rt Style Labelin Labelout LSPname 
    192.168.1.1     192.168.2.1     Up     0  1 SE  299888        3 192.168.1.1:192.168.2.1:1:mvpn:green
    P2MP name: 192.168.7.1:3:mvpn:blue, P2MP branch count: 1
    To              From            State   Rt Style Labelin Labelout LSPname 
    192.168.1.1     192.168.7.1     Up     0  1 SE  299872        3 192.168.1.1:192.168.7.1:3:mvpn:blue
    Total 2 displayed, Up 2, Down 0
    
    Transit LSP: 0 sessions
    Total 0 displayed, Up 0, Down 0

    In this display from Router PE1, notice that there are two ingress LSPs for the green VPN and two for the red VPN configured on this router. Verify that the state of each ingress LSP is up. Also notice that there is one egress LSP for each of the green and blue VPNs. Verify that the state of each egress LSP is up.

    Tip: The LSP name displayed in the show mpls lsp p2mp command output can be used in the ping mpls rsvp <lsp-name> multipath command.

Configuring CE-PE BGP

Step-by-Step Procedure

1. On the PE routers, configure the BGP export policy. The BGP export policy is used to allow static routes and routes that originated from directly attached interfaces to be exported to BGP.
   user@pe1# set policy-options policy-statement BGP-export term t1 from protocol directuser@pe1# set policy-options policy-statement BGP-export term t1 then acceptuser@pe1# set policy-options policy-statement BGP-export term t2 from protocol staticuser@pe1# set policy-options policy-statement BGP-export term t2 then acceptuser@pe2# set policy-options policy-statement BGP-export term t1 from protocol directuser@pe2# set policy-options policy-statement BGP-export term t1 then acceptuser@pe2# set policy-options policy-statement BGP-export term t2 from protocol staticuser@pe2# set policy-options policy-statement BGP-export term t2 then acceptuser@pe3# set policy-options policy-statement BGP-export term t1 from protocol directuser@pe3# set policy-options policy-statement BGP-export term t1 then acceptuser@pe3# set policy-options policy-statement BGP-export term t2 from protocol staticuser@pe3# set policy-options policy-statement BGP-export term t2 then accept

   Use the show policy BGP-export command to verify that the BGP export policy is correctly configured.

2. On the PE routers, configure the CE to PE BGP session. Use the IP address of the SONET interface as the neighbor address. Specify the autonomous system number for the VPN network of the attached CE router.
   user@pe1# set routing-instances green protocols bgp group PE-CE export BGP-exportuser@pe1# set routing-instances green protocols bgp group PE-CE neighbor 10.0.16.1 peer-as 65001user@pe2# set routing-instances green protocols bgp group PE-CE export BGP-exportuser@pe2# set routing-instances green protocols bgp group PE-CE neighbor 10.0.24.2 peer-as 65009user@pe3# set routing-instances blue protocols bgp group PE-CE export BGP-exportuser@pe3# set routing-instances blue protocols bgp group PE-CE neighbor 10.0.79.2 peer-as 65003
3. On the CE routers, configure the BGP local autonomous system number.
   user@ce1# set routing-options autonomous-system 65001user@ce2# set routing-options autonomous-system 65009user@ce3# set routing-options autonomous-system 65003
4. On the CE routers, configure the BGP export policy. The BGP export policy is used to allow static routes and routes that originated from directly attached interfaces to be exported to BGP.
   user@ce1# set policy-options policy-statement BGP-export term t1 from protocol directuser@ce1# set policy-options policy-statement BGP-export term t1 then acceptuser@ce1# set policy-options policy-statement BGP-export term t2 from protocol staticuser@ce1# set policy-options policy-statement BGP-export term t2 then acceptuser@ce2# set policy-options policy-statement BGP-export term t1 from protocol directuser@ce2# set policy-options policy-statement BGP-export term t1 then acceptuser@ce2# set policy-options policy-statement BGP-export term t2 from protocol staticuser@ce2# set policy-options policy-statement BGP-export term t2 then acceptuser@ce3# set policy-options policy-statement BGP-export term t1 from protocol directuser@ce3# set policy-options policy-statement BGP-export term t1 then acceptuser@ce3# set policy-options policy-statement BGP-export term t2 from protocol staticuser@ce3# set policy-options policy-statement BGP-export term t2 then accept

   Use the show policy BGP-export command to verify that the BGP export policy is correctly configured.

5. On the CE routers, configure the CE-to-PE BGP session. Use the IP address of the SONET interface as the neighbor address. Specify the autonomous system number of the core network. Apply the BGP export policy.
   user@ce1# set protocols bgp group PE-CE export BGP-exportuser@ce1# set protocols bgp group PE-CE neighbor 10.0.16.2 peer-as 65000user@ce2# set protocols bgp group PE-CE export BGP-exportuser@ce2# set protocols bgp group PE-CE neighbor 10.0.24.1 peer-as 65000user@ce3# set protocols bgp group PE-CE export BGP-exportuser@ce3# set protocols bgp group PE-CE neighbor 10.0.79.1 peer-as 65000
6. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
7. On the PE routers, use the show bgp group pe-ce command to verify that the BGP neighbors form a peer session.
   
   

   user@PE1> show bgp group pe-ce

   Group Type: External                               Local AS: 65000
     Name: PE-CE           Index: 1                   Flags: <>
     Export: [ BGP-export ] 
     Holdtime: 0
     Total peers: 1        Established: 1
     10.0.16.1+60500
     green.inet.0: 2/3/3/0

   Verify that the peer state for the CE routers is Established and that the IP address configured on the peer SONET interface is shown as the peer.

Configuring PIM on the PE Routers

Step-by-Step Procedure

1. On the PE routers, enable an instance of PIM in each VPN. Configure the lo0.1, lo0.2, and customer-facing SONET and Fast Ethernet interfaces. Specify the mode as sparse.
   user@pe1# set routing-instances green protocols pim interface lo0.1 mode sparseuser@pe1# set routing-instances green protocols pim interface so-0/0/3.0 mode sparseuser@pe1# set routing-instances red protocols pim interface lo0.2 mode sparseuser@pe1# set routing-instances red protocols pim interface fe-0/1/0.0 mode sparseuser@pe2# set routing-instances green protocols pim interface lo0.1 mode sparse user@pe2# set routing-instances green protocols pim interface so-0/0/1.0 mode sparseuser@pe3# set routing-instances blue protocols pim interface lo0.1 mode sparseuser@pe3# set routing-instances blue protocols pim interface so-0/0/1.0 mode sparse
2. On the PE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
3. On the PE routers, use the show pim interfaces instance green command and substitute the appropriate VRF instance name to verify that the PIM interfaces are up.
   
   

   user@PE1> show pim interfaces instance green

   Instance: PIM.green
   
   Name               Stat Mode       IP V State NbrCnt JoinCnt DR address
   lo0.1              Up   Sparse      4 2 DR         0       0 10.10.1.1
   lsi.0              Up   SparseDense 4 2 P2P        0       0
   pe-1/2/0.32769     Up   Sparse      4 2 P2P        0       0
   so-0/0/3.0         Up   Sparse      4 2 P2P        1       2
   vt-1/2/0.1         Up   SparseDense 4 2 P2P        0       0
   lsi.0              Up   SparseDense 6 2 P2P        0       0

   Also notice that the normal mode for the virtual tunnel interface and label-switched interface is SparseDense.

Configuring PIM on the CE Routers

Step-by-Step Procedure

1. On the CE routers, configure the customer-facing and core-facing interfaces for PIM. Specify the mode as sparse.
   user@ce1# set protocols pim interface fe-1/3/0.0 mode sparseuser@ce1# set protocols pim interface so-0/0/3.0 mode sparseuser@ce2# set protocols pim interface fe-0/1/1.0 mode sparseuser@ce2# set protocols pim interface so-0/0/1.0 mode sparseuser@ce3# set protocols pim interface fe-0/1/0.0 mode sparseuser@ce3# set protocols pim interface so-0/0/1.0 mode sparse

   Use the show pim interfaces command to verify that the PIM interfaces have been configured to use sparse mode.

2. On the CE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
3. On the CE routers, use the show pim interfaces command to verify that the PIM interface status is up.
   
   

   user@CE1> show pim interfaces

   Instance: PIM.master
   
   Name               Stat Mode       IP V State NbrCnt JoinCnt DR address
   fe-1/3/0.0         Up   Sparse      4 2 DR         0       0 10.10.12.1
   pe-1/2/0.32769     Up   Sparse      4 2 P2P        0       0
   so-0/0/3.0         Up   Sparse      4 2 P2P        1       1

Configuring the Rendezvous Points

Step-by-Step Procedure

1. Configure Router PE1 to be the rendezvous point for the red VPN instance of PIM. Specify the local lo0.2 address.
   user@pe1# set routing-instances red protocols pim rp local address 10.2.1.1
2. Configure Router PE2 to be the rendezvous point for the green VPN instance of PIM. Specify the lo0.1 address of Router PE2.
   user@pe2# set routing-instances green protocols pim rp local address 10.10.22.2
3. Configure Router PE3 to be the rendezvous point for the blue VPN instance of PIM. Specify the local lo0.1.
   user@pe2# set routing-instances blue protocols pim rp local address 10.3.33.3
4. On the PE1, CE1, and CE2 routers, configure the static rendezvous point for the green VPN instance of PIM. Specify the lo0.1 address of Router PE2.
   user@pe1# set routing-instances green protocols pim rp static address 10.10.22.2user@ce1# set protocols pim rp static address 10.10.22.2user@ce2# set protocols pim rp static address 10.10.22.2
5. On Router CE3, configure the static rendezvous point for the blue VPN instance of PIM. Specify the lo0.1 address of Router PE3.
   user@ce3# set protocols pim rp static address 10.3.33.3
6. On the CE routers, commit the configuration:
   
   

   user@host> commit check
   
   

   configuration check succeeds
   
   

   user@host> commit
   
   

   commit complete
7. On the PE routers, use the show pim rps instance <instance-name> command and substitute the appropriate VRF instance name to verify that the RPs have been correctly configured.
   
   

   user@PE1> show pim rps instance <instance-name>

   Instance: PIM.green
   Address family INET
   RP address               Type        Holdtime Timeout Groups Group prefixes
   10.10.22.2               static             0    None      1 224.0.0.0/4
   
   Address family INET6

   Verify that the correct IP address is shown as the RP.

8. On the CE routers, use the show pim rps command to verify that the RP has been correctly configured.
   
   

   user@CE1> show pim rps

   Instance: PIM.master
   Address family INET
   RP address               Type        Holdtime Timeout Groups Group prefixes
   10.10.22.2               static             0    None      1 224.0.0.0/4
   
   Address family INET6

   Verify that the correct IP address is shown as the RP.

9. On Router PE1, use the show route table green.mvpn.0 | find 1 command to verify that the type-1 routes have been received from the PE2 and PE3 routers.
   
   

   user@CE1> show route table green.mvpn.0 | find 1

   green.mvpn.0: 7 destinations, 9 routes (7 active, 1 holddown, 0 hidden)
   + = Active Route, - = Last Active, * = Both
   
   1:192.168.1.1:1:192.168.1.1/240               
                      *[MVPN/70] 03:38:09, metric2 1
                         Indirect
   1:192.168.1.1:2:192.168.1.1/240               
                      *[MVPN/70] 03:38:05, metric2 1
                         Indirect
   1:192.168.2.1:1:192.168.2.1/240               
                      *[BGP/170] 03:12:18, localpref 100, from 192.168.2.1
                         AS path: I
                       > to 10.0.12.10 via ge-0/3/0.0
   1:192.168.7.1:3:192.168.7.1/240               
                      *[BGP/170] 03:12:18, localpref 100, from 192.168.7.1
                         AS path: I
                       > to 10.0.17.14 via fe-0/1/1.0

10. On Router PE1, use the show route table green.mvpn.0 | find 5 command to verify that the type-5 routes have been received from Router PE2.
    
    

    user@PE1> show route table green.mvpn.0 | find 5

    5:192.168.2.1:1:32:10.10.12.52:32:224.1.1.1/240               
                       *[BGP/170] 03:12:18, localpref 100, from 192.168.2.1
                          AS path: I
                        > to 10.0.12.10 via ge-0/3/0.0

11. On Router PE1, use the show route table green.mvpn.0 | find 7 command to verify that the type-7 routes have been received from Router PE2.
    
    

    user@PE1> show route table green.mvpn.0 | find 7

    7:192.168.1.1:1:65000:32:10.10.12.52:32:224.1.1.1/240               
                       *[MVPN/70] 03:22:47, metric2 1
                          Multicast (IPv4)
                        [PIM/105] 03:34:18
                          Multicast (IPv4)
                        [BGP/170] 03:12:18, localpref 100, from 192.168.2.1
                          AS path: I
                        > to 10.0.12.10 via ge-0/3/0.0

12. On Router PE1, use the show route advertising-protocol bgp 192.168.2.1 table green.mvpn.0 detail command to verify that the routes advertised by Router PE2 use the PMSI attribute set to RSVP-TE.
    
    

    user@CE1> show route advertising-protocol bgp 192.168.2.1 table green.mvpn.0 detail

    green.mvpn.0: 7 destinations, 9 routes (7 active, 1 holddown, 0 hidden)
    * 1:192.168.1.1:1:192.168.1.1/240 (1 entry, 1 announced)
     BGP group group-mvpn type Internal
         Route Distinguisher: 192.168.1.1:1
         Nexthop: Self
         Flags: Nexthop Change
         Localpref: 100
         AS path: [65000] I
         Communities: target:65000:1
         PMSI: Flags 0:RSVP-TE:label[0:0:0]:Session_13[192.168.1.1:0:56822:192.168.1.1]

Testing MVPN Extranets

Step-by-Step Procedure

1. Start the multicast receiver device connected to Router CE2.
2. Start the multicast sender device connected to Router CE1.
3. Verify that the receiver receives the multicast stream.
4. On Router PE1, display the provider tunnel to multicast group mapping using the show mvpn c-multicast command.
   
   

   user@PE1> show mvpn c-multicast

   MVPN instance:
   
   Legend for provider tunnel
   I-P-tnl -- inclusive provider tunnel S-P-tnl -- selective provider tunnel
   
   Legend for c-multicast routes properties (Pr)
   DS -- derived from (*, c-g)          RM -- remote VPN route
   Instance: green
     C-mcast IPv4 (S:G)            Ptnl                           St
     10.10.12.52/32:224.1.1.1/32   RSVP-TE P2MP:192.168.1.1, 56822,192.168.1.1         RM
     0.0.0.0/0:239.255.255.250/32
   MVPN instance:
   
   Legend for provider tunnel
   I-P-tnl -- inclusive provider tunnel S-P-tnl -- selective provider tunnel
   
   Legend for c-multicast routes properties (Pr)
   DS -- derived from (*, c-g)          RM -- remote VPN route
   Instance: red
     C-mcast IPv4 (S:G)            Ptnl                           St
     10.10.12.52/32:224.1.1.1/32                                          DS
     0.0.0.0/0:224.1.1.1/32      

5. On Router PE2, use the show route table green.mvpn.0 | find 6 command to verify that the type-6 routes have been created as a result of receiving PIM join messages.
   
   

   user@PE1> show route table green.mvpn.0 | find 6

   6:192.168.2.1:1:65000:32:10.10.22.2:32:224.1.1.1/240               
                      *[PIM/105] 04:01:23
                         Multicast (IPv4)
   6:192.168.2.1:1:65000:32:10.10.22.2:32:239.255.255.250/240               
                      *[PIM/105] 22:39:46
                         Multicast (IPv4)

   Note: The multicast address 239.255.255.250 shown in the preceding step is not related to this example. This address is sent by some host machines.

6. Start the multicast receiver device connected to Router CE3.
7. Verify that the receiver is receiving the multicast stream.
8. On Router PE2, use the show route table green.mvpn.0 | find 6 command to verify that the type-6 routes have been created as a result of receiving PIM join messages from the multicast receiver device connected to Router CE3.
   
   

   user@PE1> show route table green.mvpn.0 | find 6

   6:192.168.2.1:1:65000:32:10.10.22.2:32:239.255.255.250/240               
                      *[PIM/105] 06:43:39
                         Multicast (IPv4)

9. Start the multicast receiver device directly connected to Router PE1.
10. Verify that the receiver is receiving the multicast stream.
11. On Router PE1, use the show route table green.mvpn.0 | find 6 command to verify that the type-6 routes have been created as a result of receiving PIM join messages from the directly connected multicast receiver device.
    
    

    user@PE1> show route table green.mvpn.0 | find 6

    6:192.168.1.1:2:65000:32:10.2.1.1:32:224.1.1.1/240               
                       *[PIM/105] 00:02:32
                          Multicast (IPv4)
    6:192.168.1.1:2:65000:32:10.2.1.1:32:239.255.255.250/240               
                       *[PIM/105] 00:05:49
                          Multicast (IPv4)

    Note: The multicast address 255.255.255.250 shown in the step above is not related to this example.

Results

The configuration and verification parts of this example have been completed. The following section is for your reference.

The relevant sample configuration for Router CE1 follows.

The relevant sample configuration for Router PE1 follows.

The relevant sample configuration for Router PE2 follows.

The relevant sample configuration for Router CE2 follows.

The relevant sample configuration for Router PE3 follows.

The relevant sample configuration for Router CE3 follows.

Related Topics

• MBGP Multicast VPN Extranets Configuration Guidelines
• MBGP Multicast VPN Extranets Overview