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Table of Contents Expand all

play_arrow Overview
- play_arrow Understanding Multicast
play_arrow Managing Group Membership
play_arrow Configuring Protocol Independent Multicast
- play_arrow Understanding PIM
  - PIM Overview
  - PIM on Aggregated Interfaces
- play_arrow Configuring PIM Basics
- play_arrow Routing Content to Densely Clustered Receivers with PIM Dense Mode
- play_arrow Routing Content to Larger, Sparser Groups with PIM Sparse Mode
- play_arrow Configuring Designated Routers
  - Understanding Designated Routers
  - Configuring a Designated Router for PIM
- play_arrow Receiving Content Directly from the Source with SSM
- play_arrow Minimizing Routing State Information with Bidirectional PIM
  - Example: Configuring Bidirectional PIM
- play_arrow Rapidly Detecting Communication Failures with PIM and the BFD Protocol
  - Configuring PIM and the Bidirectional Forwarding Detection (BFD) Protocol
- play_arrow Configuring PIM Options
  - Example: Configuring Nonstop Active Routing for PIM
  - Configuring PIM-to-IGMP and PIM-to-MLD Message Translation
- play_arrow Verifying PIM Configurations
play_arrow Configuring Multicast Routing Protocols
- play_arrow Connecting Routing Domains Using MSDP
  - Examples: Configuring MSDP
  - Configuring Multiple Instances of MSDP
- play_arrow Handling Session Announcements with SAP and SDP
  - Configuring the Session Announcement Protocol
  - Verifying SAP and SDP Addresses and Ports
- play_arrow Facilitating Multicast Delivery Across Unicast-Only Networks with AMT
  - Example: Configuring Automatic IP Multicast Without Explicit Tunnels
- play_arrow Routing Content to Densely Clustered Receivers with DVMRP
  - Examples: Configuring DVMRP
play_arrow Configuring Multicast VPNs
play_arrow General Multicast Options
- play_arrow Bit Index Explicit Replication (BIER)
- play_arrow Prevent Routing Loops with Reverse Path Forwarding
  - Examples: Configuring Reverse Path Forwarding
- play_arrow Use Multicast-Only Fast Reroute (MoFRR) to Minimize Packet Loss During Link Failures
- play_arrow Enable Multicast Between Layer 2 and Layer 3 Devices Using Snooping
- play_arrow Configure Multicast Routing Options
- play_arrow Controller-Based BGP Multicast Signaling
  - Controller-Based BGP Multicast Signaling
play_arrow Troubleshooting
- play_arrow Knowledge Base
  - Knowledge Search
  - JTAC Certified Step-by-Step Troubleshooting: Junos OS Multicast
play_arrow Configuration Statements and Operational Commands
- Junos CLI Reference Overview

list Table of Contents

English

Example: Configuring Multicast-Only Fast Reroute in a Multipoint LDP Domain

date_range 24-Nov-23

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This example shows how to configure multicast-only fast reroute (MoFRR) to minimize packet loss in a network when there is a link failure.

Multipoint LDP MoFRR is used at the egress node of an MPLS network, where the packets are forwarded to an IP network. In the case of multipoint LDP MoFRR, the two paths toward the upstream provider edge (PE) router are established for receiving two streams of MPLS packets at the label-edge router (LER). One of the streams (the primary) is accepted, and the other one (the backup) is dropped at the LER. The backup stream is accepted if the primary path fails.

Requirements

No special configuration beyond device initialization is required before configuring this example.

In a multipoint LDP domain, for MoFRR to work, only the egress PE router needs to have MoFRR enabled. The other routers do not need to support MoFRR.

MoFRR is supported on MX Series platforms with MPC line cards. As a prerequisite, the router must be set to network-services enhanced-ip mode, and all the line-cards in the platform must be MPCs.

This example requires Junos OS Release 14.1 or later on the egress PE router.

Overview

In this example, Device R3 is the egress edge router. MoFRR is enabled on this device only.

OSPF is used for connectivity, though any interior gateway protocol (IGP) or static routes can be used.

For testing purposes, routers are used to simulate the source and the receiver. Device R4 and Device R8 are configured to statically join the desired group by using the set protocols igmp interface interface-name static group group command. In the case when a real multicast receiver host is not available, as in this example, this static IGMP configuration is useful. On the receivers, to make them listen to the multicast group address, this example uses set protocols sap listen group.

MoFRR configuration includes a policy option that is not shown in this example, but is explained separately. The option is configured as follows:

stream-protection {
    policy policy-name; 
}

Topology

Figure 1 shows the sample network.

Figure 1: MoFRR in a Multipoint LDP Domain

CLI Quick Configuration shows the configuration for all of the devices in Figure 1.

The section Configuration describes the steps on Device R3.

CLI Quick Configuration

To quickly configure this example, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary to match your network configuration, and then copy and paste the commands into the CLI at the [edit] hierarchy level.

Device src1

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set interfaces ge-1/2/10 unit 0 description src1-to-R1
set interfaces ge-1/2/10 unit 0 family inet address 10.5.0.1/30
set interfaces ge-1/2/11 unit 0 description src1-to-R1
set interfaces ge-1/2/11 unit 0 family inet address 192.168.219.11/24
set interfaces lo0 unit 0 family inet address 10.0.1.17/32
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive

Device src2

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set interfaces ge-1/2/24 unit 0 description src2-to-R5
set interfaces ge-1/2/24 unit 0 family inet address 10.5.0.2/30
set interfaces lo0 unit 0 family inet address 10.0.1.18/32
set protocols rsvp interface all
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive

Device R1

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set interfaces ge-1/2/12 unit 0 description R1-to-R2
set interfaces ge-1/2/12 unit 0 family inet address 10.1.2.1/30
set interfaces ge-1/2/12 unit 0 family mpls
set interfaces ge-1/2/13 unit 0 description R1-to-R6
set interfaces ge-1/2/13 unit 0 family inet address 10.1.6.1/30
set interfaces ge-1/2/13 unit 0 family mpls
set interfaces ge-1/2/10 unit 0 description R1-to-src1
set interfaces ge-1/2/10 unit 0 family inet address 10.1.0.2/30
set interfaces ge-1/2/11 unit 0 description R1-to-src1
set interfaces ge-1/2/11 unit 0 family inet address 192.168.219.9/30
set interfaces lo0 unit 0 family inet address 10.1.1.1/32
set protocols rsvp interface all
set protocols mpls interface all
set protocols bgp group ibgp local-address 10.1.1.1
set protocols bgp group ibgp export static-route-tobgp
set protocols bgp group ibgp peer-as 65010
set protocols bgp group ibgp neighbor 10.1.1.3
set protocols bgp group ibgp neighbor 10.1.1.7
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ldp interface ge-1/2/12.0
set protocols ldp interface ge-1/2/13.0
set protocols ldp interface lo0.0
set protocols ldp p2mp
set protocols pim mldp-inband-signalling policy mldppim-ex
set protocols pim rp static address 10.1.1.5
set protocols pim interface lo0.0
set protocols pim interface ge-1/2/10.0
set protocols pim interface ge-1/2/11.0
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.0.0/24 orlonger
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.219.11/32 orlonger
set policy-options policy-statement mldppim-ex term B then p2mp-lsp-root address 10.1.1.2
set policy-options policy-statement mldppim-ex term B then accept
set policy-options policy-statement mldppim-ex term A from source-address-filter 10.1.1.7/32 orlonger
set policy-options policy-statement mldppim-ex term A from source-address-filter 10.1.0.0/30 orlonger
set policy-options policy-statement mldppim-ex term A then accept
set policy-options policy-statement static-route-tobgp term static from protocol static
set policy-options policy-statement static-route-tobgp term static from protocol direct
set policy-options policy-statement static-route-tobgp term static then accept
set routing-options autonomous-system 65010

Device R2

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set interfaces ge-1/2/12 unit 0 description R2-to-R1
set interfaces ge-1/2/12 unit 0 family inet address 10.1.2.2/30
set interfaces ge-1/2/12 unit 0 family mpls
set interfaces ge-1/2/14 unit 0 description R2-to-R3
set interfaces ge-1/2/14 unit 0 family inet address 10.2.3.1/30
set interfaces ge-1/2/14 unit 0 family mpls
set interfaces ge-1/2/16 unit 0 description R2-to-R5
set interfaces ge-1/2/16 unit 0 family inet address 10.2.5.1/30
set interfaces ge-1/2/16 unit 0 family mpls
set interfaces ge-1/2/17 unit 0 description R2-to-R7
set interfaces ge-1/2/17 unit 0 family inet address 10.2.7.1/30
set interfaces ge-1/2/17 unit 0 family mpls
set interfaces ge-1/2/15 unit 0 description R2-to-R3
set interfaces ge-1/2/15 unit 0 family inet address 10.2.94.1/30
set interfaces ge-1/2/15 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.1.1.2/32
set interfaces lo0 unit 0 family mpls
set protocols rsvp interface all
set protocols mpls interface all
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ldp interface all
set protocols ldp p2mp
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.0.0/24 orlonger
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.219.11/32 orlonger
set policy-options policy-statement mldppim-ex term B then p2mp-lsp-root address 10.1.1.2
set policy-options policy-statement mldppim-ex term B then accept
set routing-options autonomous-system 65010

Device R3

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set chassis network-services enhanced-ip
set interfaces ge-1/2/14 unit 0 description R3-to-R2
set interfaces ge-1/2/14 unit 0 family inet address 10.2.3.2/30
set interfaces ge-1/2/14 unit 0 family mpls
set interfaces ge-1/2/18 unit 0 description R3-to-R4
set interfaces ge-1/2/18 unit 0 family inet address 10.3.4.1/30
set interfaces ge-1/2/18 unit 0 family mpls
set interfaces ge-1/2/19 unit 0 description R3-to-R6
set interfaces ge-1/2/19 unit 0 family inet address 10.3.6.2/30
set interfaces ge-1/2/19 unit 0 family mpls
set interfaces ge-1/2/21 unit 0 description R3-to-R7
set interfaces ge-1/2/21 unit 0 family inet address 10.3.7.1/30
set interfaces ge-1/2/21 unit 0 family mpls
set interfaces ge-1/2/22 unit 0 description R3-to-R8
set interfaces ge-1/2/22 unit 0 family inet address 10.3.8.1/30
set interfaces ge-1/2/22 unit 0 family mpls
set interfaces ge-1/2/15 unit 0 description R3-to-R2
set interfaces ge-1/2/15 unit 0 family inet address 10.2.94.2/30
set interfaces ge-1/2/15 unit 0 family mpls
set interfaces ge-1/2/20 unit 0 description R3-to-R6
set interfaces ge-1/2/20 unit 0 family inet address 10.2.96.2/30
set interfaces ge-1/2/20 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.1.1.3/32 primary
set routing-options autonomous-system 65010
set routing-options multicast stream-protection
set protocols rsvp interface all
set protocols mpls interface all
set protocols bgp group ibgp local-address 10.1.1.3
set protocols bgp group ibgp peer-as 10
set protocols bgp group ibgp neighbor 10.1.1.1
set protocols bgp group ibgp neighbor 10.1.1.5
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface fxp0.0 disable
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ldp interface all
set protocols ldp p2mp
set protocols pim mldp-inband-signalling policy mldppim-ex
set protocols pim interface lo0.0
set protocols pim interface ge-1/2/18.0
set protocols pim interface ge-1/2/22.0
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.0.0/24 orlonger
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.219.11/32 orlonger
set policy-options policy-statement mldppim-ex term B then accept
set policy-options policy-statement mldppim-ex term A from source-address-filter 10.1.0.1/30 orlonger
set policy-options policy-statement mldppim-ex term A then accept
set policy-options policy-statement static-route-tobgp term static from protocol static
set policy-options policy-statement static-route-tobgp term static from protocol direct
set policy-options policy-statement static-route-tobgp term static then accept

Device R4

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set interfaces ge-1/2/18 unit 0 description R4-to-R3
set interfaces ge-1/2/18 unit 0 family inet address 10.3.4.2/30
set interfaces ge-1/2/18 unit 0 family mpls
set interfaces ge-1/2/23 unit 0 description R4-to-R7
set interfaces ge-1/2/23 unit 0 family inet address 10.4.7.1/30
set interfaces lo0 unit 0 family inet address 10.1.1.4/32
set protocols igmp interface ge-1/2/18.0 version 3
set protocols igmp interface ge-1/2/18.0 static group 232.1.1.1 group-count 2
set protocols igmp interface ge-1/2/18.0 static group 232.1.1.1 source 192.168.219.11
set protocols igmp interface ge-1/2/18.0 static group 232.2.2.2 source 10.2.7.7
set protocols sap listen 232.1.1.1
set protocols sap listen 232.2.2.2
set protocols rsvp interface all
set protocols mpls interface all
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols pim mldp-inband-signalling policy mldppim-ex
set protocols pim interface ge-1/2/23.0
set protocols pim interface ge-1/2/18.0
set protocols pim interface lo0.0
set policy-options policy-statement static-route-tobgp term static from protocol static
set policy-options policy-statement static-route-tobgp term static from protocol direct
set policy-options policy-statement static-route-tobgp term static then accept
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.0.0/24 orlonger
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.219.11/32 orlonger
set policy-options policy-statement mldppim-ex term B then p2mp-lsp-root address 10.1.1.2
set policy-options policy-statement mldppim-ex term B then accept
set routing-options autonomous-system 65010

Device R5

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set interfaces ge-1/2/24 unit 0 description R5-to-src2
set interfaces ge-1/2/24 unit 0 family inet address 10.5.0.1/30
set interfaces ge-1/2/16 unit 0 description R5-to-R2
set interfaces ge-1/2/16 unit 0 family inet address 10.2.5.2/30
set interfaces ge-1/2/16 unit 0 family mpls
set interfaces ge-1/2/25 unit 0 description R5-to-R6
set interfaces ge-1/2/25 unit 0 family inet address 10.5.6.1/30
set interfaces ge-1/2/25 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.1.1.5/32
set protocols rsvp interface all
set protocols mpls interface all
set protocols bgp group ibgp local-address 10.1.1.5
set protocols bgp group ibgp export static-route-tobgp
set protocols bgp group ibgp peer-as 65010
set protocols bgp group ibgp neighbor 10.1.1.7
set protocols bgp group ibgp neighbor 10.1.1.3
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ldp interface ge-1/2/16.0
set protocols ldp interface ge-1/2/25.0
set protocols ldp p2mp
set protocols pim interface lo0.0
set protocols pim interface ge-1/2/24.0
set policy-options policy-statement static-route-tobgp term static from protocol static
set policy-options policy-statement static-route-tobgp term static from protocol direct
set policy-options policy-statement static-route-tobgp term static then accept
set routing-options autonomous-system 65010

Device R6

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set interfaces ge-1/2/13 unit 0 description R6-to-R1
set interfaces ge-1/2/13 unit 0 family inet address 10.1.6.2/30
set interfaces ge-1/2/13 unit 0 family mpls
set interfaces ge-1/2/19 unit 0 description R6-to-R3
set interfaces ge-1/2/19 unit 0 family inet address 10.3.6.1/30
set interfaces ge-1/2/19 unit 0 family mpls
set interfaces ge-1/2/25 unit 0 description R6-to-R5
set interfaces ge-1/2/25 unit 0 family inet address 10.5.6.2/30
set interfaces ge-1/2/25 unit 0 family mpls
set interfaces ge-1/2/26 unit 0 description R6-to-R7
set interfaces ge-1/2/26 unit 0 family inet address 10.6.7.1/30
set interfaces ge-1/2/26 unit 0 family mpls
set interfaces ge-1/2/20 unit 0 description R6-to-R3
set interfaces ge-1/2/20 unit 0 family inet address 10.2.96.1/30
set interfaces ge-1/2/20 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.1.1.6/30
set protocols rsvp interface all
set protocols mpls interface all
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ldp interface all
set protocols ldp p2mp

Device R7

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set interfaces ge-1/2/17 unit 0 description R7-to-R2
set interfaces ge-1/2/17 unit 0 family inet address 10.2.7.2/30
set interfaces ge-1/2/17 unit 0 family mpls
set interfaces ge-1/2/21 unit 0 description R7-to-R3
set interfaces ge-1/2/21 unit 0 family inet address 10.3.7.2/30
set interfaces ge-1/2/21 unit 0 family mpls
set interfaces ge-1/2/23 unit 0 description R7-to-R4
set interfaces ge-1/2/23 unit 0 family inet address 10.4.7.2/30
set interfaces ge-1/2/23 unit 0 family mpls
set interfaces ge-1/2/26 unit 0 description R7-to-R6
set interfaces ge-1/2/26 unit 0 family inet address 10.6.7.2/30
set interfaces ge-1/2/26 unit 0 family mpls
set interfaces ge-1/2/27 unit 0 description R7-to-R8
set interfaces ge-1/2/27 unit 0 family inet address 10.7.8.1/30
set interfaces ge-1/2/27 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.1.1.7/32
set protocols rsvp interface all
set protocols mpls interface all
set protocols bgp group ibgp local-address 10.1.1.7
set protocols bgp group ibgp export static-route-tobgp
set protocols bgp group ibgp peer-as 65010
set protocols bgp group ibgp neighbor 10.1.1.5
set protocols bgp group ibgp neighbor 10.1.1.1
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols ldp interface ge-1/2/17.0
set protocols ldp interface ge-1/2/21.0
set protocols ldp interface ge-1/2/26.0
set protocols ldp p2mp
set protocols pim mldp-inband-signalling policy mldppim-ex
set protocols pim interface lo0.0
set protocols pim interface ge-1/2/27.0
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.0.0/24 orlonger
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.219.11/32 orlonger
set policy-options policy-statement mldppim-ex term B then accept
set policy-options policy-statement mldppim-ex term A from source-address-filter 10.1.0.1/30 orlonger
set policy-options policy-statement mldppim-ex term A then accept
set policy-options policy-statement static-route-tobgp term static from protocol static
set policy-options policy-statement static-route-tobgp term static from protocol direct
set policy-options policy-statement static-route-tobgp term static then accept
set routing-options autonomous-system 65010
set routing-options multicast stream-protection policy mldppim-ex

Device R8

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set interfaces ge-1/2/22 unit 0 description R8-to-R3
set interfaces ge-1/2/22 unit 0 family inet address 10.3.8.2/30
set interfaces ge-1/2/22 unit 0 family mpls
set interfaces ge-1/2/27 unit 0 description R8-to-R7
set interfaces ge-1/2/27 unit 0 family inet address 10.7.8.2/30
set interfaces ge-1/2/27 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 10.1.1.8/32
set protocols igmp interface ge-1/2/22.0 version 3
set protocols igmp interface ge-1/2/22.0 static group 232.1.1.1 group-count 2
set protocols igmp interface ge-1/2/22.0 static group 232.1.1.1 source 192.168.219.11
set protocols igmp interface ge-1/2/22.0 static group 232.2.2.2 source 10.2.7.7
set protocols sap listen 232.1.1.1
set protocols sap listen 232.2.2.2
set protocols rsvp interface all
set protocols ospf traffic-engineering
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface lo0.0 passive
set protocols pim mldp-inband-signalling policy mldppim-ex
set protocols pim interface ge-1/2/27.0
set protocols pim interface ge-1/2/22.0
set protocols pim interface lo0.0
set policy-options policy-statement static-route-tobgp term static from protocol static
set policy-options policy-statement static-route-tobgp term static from protocol direct
set policy-options policy-statement static-route-tobgp term static then accept
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.0.0/24 orlonger
set policy-options policy-statement mldppim-ex term B from source-address-filter 192.168.219.11/32 orlonger
set policy-options policy-statement mldppim-ex term B then p2mp-lsp-root address 10.1.1.2
set policy-options policy-statement mldppim-ex term B then accept
set routing-options autonomous-system 65010

Configuration

Step-by-Step Procedure

The following example requires that you navigate various levels in the configuration hierarchy. For information about navigating the CLI, see Using the CLI Editor in Configuration Mode in the Junos OS CLI User Guide.

To configure Device R3:

Enable enhanced IP mode.

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[edit chassis]
user@R3# set network-services enhanced-ip

Configure the device interfaces.

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[edit interfaces]
user@R3# set ge-1/2/14 unit 0 description R3-to-R2
user@R3# set ge-1/2/14 unit 0 family inet address 10.2.3.2/30
user@R3# set ge-1/2/14 unit 0 family mpls
user@R3# set ge-1/2/18 unit 0 description R3-to-R4
user@R3# set ge-1/2/18 unit 0 family inet address 10.3.4.1/30
user@R3# set ge-1/2/18 unit 0 family mpls
user@R3# set ge-1/2/19 unit 0 description R3-to-R6
user@R3# set ge-1/2/19 unit 0 family inet address 10.3.6.2/30
user@R3# set ge-1/2/19 unit 0 family mpls
user@R3# set ge-1/2/21 unit 0 description R3-to-R7
user@R3# set ge-1/2/21 unit 0 family inet address 10.3.7.1/30
user@R3# set ge-1/2/21 unit 0 family mpls
user@R3# set ge-1/2/22 unit 0 description R3-to-R8
user@R3# set ge-1/2/22 unit 0 family inet address 10.3.8.1/30
user@R3# set ge-1/2/22 unit 0 family mpls
user@R3# set ge-1/2/15 unit 0 description R3-to-R2
user@R3# set ge-1/2/15 unit 0 family inet address 10.2.94.2/30
user@R3# set ge-1/2/15 unit 0 family mpls
user@R3# set ge-1/2/20 unit 0 description R3-to-R6
user@R3# set ge-1/2/20 unit 0 family inet address 10.2.96.2/30
user@R3# set ge-1/2/20 unit 0 family mpls
user@R3# set lo0 unit 0 family inet address 10.1.1.3/32 primary

Configure the autonomous system (AS) number.
```
user@R3# set routing-options autonomous-system 6510
```

Configure the routing policies.

content_copy zoom_out_map
[edit policy-options policy-statement mldppim-ex]
user@R3# set term B from source-address-filter 192.168.0.0/24 orlonger
user@R3# set term B from source-address-filter 192.168.219.11/32 orlonger
user@R3# set term B then accept
user@R3# set term A from source-address-filter 10.1.0.1/30 orlonger
user@R3# set term A then accept
[edit policy-options policy-statement static-route-tobgp]
user@R3# set  term static from protocol static
user@R3# set  term static from protocol direct
user@R3# set term static then accept

Configure PIM.

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[edit protocols pim]
user@R3# set mldp-inband-signalling policy mldppim-ex
user@R3# set interface lo0.0
user@R3# set interface ge-1/2/18.0
user@R3# set interface ge-1/2/22.0

Configure LDP.

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[edit protocols ldp]
user@R3# set interface all
user@R3# set p2mp

Configure an IGP or static routes.

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[edit protocols ospf]
user@R3# set traffic-engineering
user@R3# set area 0.0.0.0 interface all
user@R3# set area 0.0.0.0 interface fxp0.0 disable
user@R3# set area 0.0.0.0 interface lo0.0 passive

Configure internal BGP.

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[edit protocols bgp group ibgp]
user@R3# set local-address 10.1.1.3
user@R3# set peer-as 65010
user@R3# set neighbor 10.1.1.1
user@R3# set neighbor 10.1.1.5

Configure MPLS and, optionally, RSVP.

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[edit protocols mpls]
user@R3# set interface all
[edit protocols rsvp]
user@R3# set interface all

Enable MoFRR.

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[edit routing-options multicast]
user@R3# set stream-protection

Results

From configuration mode, confirm your configuration by entering the show chassis, show interfaces, show protocols, show policy-options, and show routing-options commands. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.

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user@R3# show chassis
network-services enhanced-ip;

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user@R3# show interfaces
ge-1/2/14 {
    unit 0 {
        description R3-to-R2;
        family inet {
            address 10.2.3.2/30;
        }
        family mpls;
    }
}
ge-1/2/18 {
    unit 0 {
        description R3-to-R4;
        family inet {
            address 10.3.4.1/30;
        }
        family mpls;
    }
}
ge-1/2/19 {
    unit 0 {
        description R3-to-R6;
        family inet {
            address 10.3.6.2/30;
        }
        family mpls;
    }
}
ge-1/2/21 {
    unit 0 {
        description R3-to-R7;
        family inet {
            address 10.3.7.1/30;
        }
        family mpls;
    }
}
ge-1/2/22 {
    unit 0 {
        description R3-to-R8;
        family inet {
            address 10.3.8.1/30;
        }
        family mpls;
    }
}
ge-1/2/15 {
    unit 0 {
        description R3-to-R2;
        family inet {
            address 10.2.94.2/30;
        }
        family mpls;
    }
}
ge-1/2/20 {
    unit 0 {
        description R3-to-R6;
        family inet {
            address 10.2.96.2/30;
        }
        family mpls;
    }
}
lo0 {
    unit 0 {
        family inet {
            address 192.168.15.1/32;
            address 10.1.1.3/32 {
                primary;
            }
        }
    }
}

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user@R3# show protocols
rsvp {
    interface all;
}
mpls {
    interface all;
}
bgp {
    group ibgp {
        local-address 10.1.1.3;
        peer-as 65010;
        neighbor 10.1.1.1;
        neighbor 10.1.1.5;
    }
}
ospf {
    traffic-engineering;
    area 0.0.0.0 {
        interface all;
        interface fxp0.0 {
            disable;
        }
        interface lo0.0 {
            passive;
        }
    }
}
ldp {
    interface all;
    p2mp;
}
pim {
    mldp-inband-signalling {
        policy mldppim-ex;
    }
    interface lo0.0;
    interface ge-1/2/18.0;
    interface ge-1/2/22.0;
}

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user@R3# show policy-options
policy-statement mldppim-ex {
    term B {
        from {
            source-address-filter 192.168.0.0/24 orlonger;
            source-address-filter 192.168.219.11/32 orlonger;
        }
        then accept;
    }
    term A {
        from {
            source-address-filter 10.1.0.1/30 orlonger;
        }
        then accept;
    }
}
policy-statement static-route-tobgp {
    term static {
        from protocol [ static direct ];
        then accept;
    }
}

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user@R3# show routing-options
autonomous-system 65010;
multicast {
    stream-protection;
}

If you are done configuring the device, enter commit from configuration mode.

Verification

Confirm that the configuration is working properly.

Checking the LDP Point-to-Multipoint Forwarding Equivalency Classes
Examining the Label Information
Checking the Multicast Routes
Checking the LDP Point-to-Multipoint Traffic Statistics

Checking the LDP Point-to-Multipoint Forwarding Equivalency Classes

Purpose
Action
Meaning

Purpose

Make sure the MoFRR is enabled, and determine what labels are being used.

Action

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user@R3> show ldp p2mp fec

LDP P2MP FECs:
 P2MP root-addr 10.1.1.1, grp: 232.1.1.1, src: 192.168.219.11
  MoFRR enabled 
  Fec type: Egress (Active)
  Label: 301568
 P2MP root-addr 10.1.1.1, grp: 232.1.1.2, src: 192.168.219.11
  MoFRR enabled 
  Fec type: Egress (Active)
  Label: 301600

Meaning

The output shows that MoFRR is enabled, and it shows that the labels 301568 and 301600 are being used for the two multipoint LDP point-to-multipoint LSPs.

Examining the Label Information

Purpose
Action
Meaning

Purpose

Make sure that the egress device has two upstream interfaces for the multicast group join.

Action

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user@R3> show route label 301568 detail

mpls.0: 18 destinations, 18 routes (18 active, 0 holddown, 0 hidden)
301568 (1 entry, 1 announced)
        *LDP    Preference: 9
                Next hop type: Flood
                Address: 0x2735208
                Next-hop reference count: 3
                Next hop type: Router, Next hop index: 1397
                Address: 0x2735d2c
                Next-hop reference count: 3
                Next hop: 10.3.8.2 via ge-1/2/22.0
                Label operation: Pop      
                Load balance label:  None; 
                Next hop type: Router, Next hop index: 1395
                Address: 0x2736290
                Next-hop reference count: 3
                Next hop: 10.3.4.2 via ge-1/2/18.0
                Label operation: Pop      
                Load balance label:  None; 
                State: <Active Int AckRequest MulticastRPF>
                Local AS:    65010 
                Age: 54:05      Metric: 1 
                Validation State: unverified 
                Task: LDP
                Announcement bits (1): 0-KRT 
                AS path: I
                FECs bound to route: P2MP root-addr 10.1.1.1, grp: 232.1.1.1, src: 192.168.219.11
                Primary Upstream : 10.1.1.3:0--10.1.1.2:0
                   RPF Nexthops  :
                        ge-1/2/15.0, 10.2.94.1, Label: 301568, weight: 0x1
                        ge-1/2/14.0, 10.2.3.1, Label: 301568, weight: 0x1
                Backup Upstream : 10.1.1.3:0--10.1.1.6:0
                   RPF Nexthops :
                        ge-1/2/20.0, 10.2.96.1, Label: 301584, weight: 0xfffe
                        ge-1/2/19.0, 10.3.6.1, Label: 301584, weight: 0xfffe

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user@R3> show route label 301600 detail

mpls.0: 18 destinations, 18 routes (18 active, 0 holddown, 0 hidden)
301600 (1 entry, 1 announced)
        *LDP    Preference: 9
                Next hop type: Flood
                Address: 0x27356b4
                Next-hop reference count: 3
                Next hop type: Router, Next hop index: 1520
                Address: 0x27350f4
                Next-hop reference count: 3
                Next hop: 10.3.8.2 via ge-1/2/22.0
                Label operation: Pop      
                Load balance label:  None; 
                Next hop type: Router, Next hop index: 1481
                Address: 0x273645c
                Next-hop reference count: 3
                Next hop: 10.3.4.2 via ge-1/2/18.0
                Label operation: Pop      
                Load balance label:  None; 
                State: <Active Int AckRequest MulticastRPF>
                Local AS:    65010 
                Age: 54:25      Metric: 1 
                Validation State: unverified 
                Task: LDP
                Announcement bits (1): 0-KRT 
                AS path: I
                FECs bound to route: P2MP root-addr 10.1.1.1, grp: 232.1.1.2, src: 192.168.219.11
                Primary Upstream : 10.1.1.3:0--10.1.1.6:0
                   RPF Nexthops  :
                        ge-1/2/20.0, 10.2.96.1, Label: 301600, weight: 0x1
                        ge-1/2/19.0, 10.3.6.1, Label: 301600, weight: 0x1
                Backup Upstream : 10.1.1.3:0--1.1.1.2:0
                   RPF Nexthops :
                        ge-1/2/15.0, 10.2.94.1, Label: 301616, weight: 0xfffe
                        ge-1/2/14.0, 10.2.3.1, Label: 301616, weight: 0xfffe

Meaning

The output shows the primary upstream paths and the backup upstream paths. It also shows the RPF next hops.

Checking the Multicast Routes

Purpose
Action
Meaning

Purpose

Examine the IP multicast forwarding table to make sure that there is an upstream RPF interface list, with a primary and a backup interface.

Action

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user@R3> show ldp p2mp path
P2MP path type: Transit/Egress
  Output Session (label): 10.1.1.2:0 (301568) (Primary)
  Egress Nexthops: Interface ge-1/2/18.0
                   Interface ge-1/2/22.0
  RPF Nexthops:    Interface ge-1/2/15.0, 10.2.94.1, 301568, 1
                   Interface ge-1/2/20.0, 10.2.96.1, 301584, 65534
                   Interface ge-1/2/14.0, 10.2.3.1, 301568, 1
                   Interface ge-1/2/19.0, 10.3.6.1, 301584, 65534
  Attached FECs:  P2MP root-addr 10.1.1.1, grp: 232.1.1.1, src: 192.168.219.11 (Active)
P2MP path type: Transit/Egress
  Output Session (label): 10.1.1.6:0 (301584) (Backup)
  Egress Nexthops: Interface ge-1/2/18.0
                   Interface ge-1/2/22.0
  RPF Nexthops:    Interface ge-1/2/15.0, 10.2.94.1, 301568, 1
                   Interface ge-1/2/20.0, 10.2.96.1, 301584, 65534
                   Interface ge-1/2/14.0, 10.2.3.1, 301568, 1
                   Interface ge-1/2/19.0, 10.3.6.1, 301584, 65534
  Attached FECs:  P2MP root-addr 10.1.1.1, grp: 232.1.1.1, src: 192.168.219.11 (Active)
P2MP path type: Transit/Egress
  Output Session (label): 10.1.1.6:0 (301600) (Primary)
  Egress Nexthops: Interface ge-1/2/18.0
                   Interface ge-1/2/22.0
  RPF Nexthops:    Interface ge-1/2/15.0, 10.2.94.1, 301616, 65534
                   Interface ge-1/2/20.0, 10.2.96.1, 301600, 1
                   Interface ge-1/2/14.0, 10.2.3.1, 301616, 65534
                   Interface ge-1/2/19.0, 10.3.6.1, 301600, 1
  Attached FECs:  P2MP root-addr 10.1.1.1, grp: 232.1.1.2, src: 192.168.219.11 (Active)
P2MP path type: Transit/Egress
  Output Session (label): 10.1.1.2:0 (301616) (Backup)
  Egress Nexthops: Interface ge-1/2/18.0
                   Interface ge-1/2/22.0
  RPF Nexthops:    Interface ge-1/2/15.0, 10.2.94.1, 301616, 65534
                   Interface ge-1/2/20.0, 10.2.96.1, 301600, 1
                   Interface ge-1/2/14.0, 10.2.3.1, 301616, 65534
                   Interface ge-1/2/19.0, 10.3.6.1, 301600, 1
  Attached FECs:  P2MP root-addr 10.1.1.1, grp: 232.1.1.2, src: 192.168.219.11 (Active)

Meaning

The output shows primary and backup sessions, and RPF next hops.

Checking the LDP Point-to-Multipoint Traffic Statistics

Purpose
Action
Meaning

Purpose

Make sure that both primary and backup statistics are listed.

Action

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user@R3> show ldp traffic-statistics p2mp

P2MP FEC Statistics:

FEC(root_addr:lsp_id/grp,src)     Nexthop              Packets             Bytes Shared
10.1.1.1:232.1.1.1,192.168.219.11, Label: 301568
                                  10.3.8.2                    0                 0 No  
                                  10.3.4.2                    0                 0 No  
10.1.1.1:232.1.1.1,192.168.219.11, Label: 301584, Backup route
                                  10.3.4.2                    0                 0 No  
                                  10.3.8.2                    0                 0 No  
10.1.1.1:232.1.1.2,192.168.219.11, Label: 301600
                                  10.3.8.2                    0                 0 No  
                                  10.3.4.2                    0                 0 No  
10.1.1.1:232.1.1.2,192.168.219.11, Label: 301616, Backup route
                                  10.3.4.2                    0                 0 No  
                                  10.3.8.2                    0                 0 No  

Meaning

The output shows both primary and backup routes with the labels.

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Multicast Protocols User Guide

ON THIS PAGE

Example: Configuring Multicast-Only Fast Reroute in a Multipoint LDP Domain

Requirements

Overview

Topology

CLI Quick Configuration

CLI Quick Configuration

Configuration

Procedure

Step-by-Step Procedure

Results

Verification

Checking the LDP Point-to-Multipoint Forwarding Equivalency Classes

Purpose

Action

Meaning

Examining the Label Information

Purpose

Action

Meaning

Checking the Multicast Routes

Purpose

Action

Meaning

Checking the LDP Point-to-Multipoint Traffic Statistics

Purpose

Action

Meaning

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