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Example: IPv4 Multicast with Interprovider VPNs Configuration

Figure 1: IPv4 Multicast with Interprovider VPNs Topology Diagram

IPv4 Multicast with Interprovider VPNs Topology Diagram

Interprovider VPNs are also mentioned in RFC 4364. An example is shown in Figure 1. The topology is slightly different; the main difference is the addition of MSDP between the two provider core transit (P) routers. In this limited topology, each P router is an SP-RP for the local autonomous system (AS), and Router CE1 is the VPN C-RP. VPN-A is the name of the routing instance on routers PE0 and PE1.

Router CE0

[edit]protocols {pim {dense-groups {229.0.0.0/8;}rp {static {address 10.254.14.132;}}interface all {mode sparse-dense;version 2;}interface fxp0.0 {disable;}}}

Router PE0

[edit]protocols {pim {rp {static {address 10.254.71.49;}}interface all {mode sparse;version 2;}interface fxp0.0 {disable;}}}routing-instances {VPN-A {provider-tunnel {pim-asm {group-address 239.1.1.1;}}protocols {pim {dense-groups {229.0.0.0/8;} vpn-group-address 239.1.1.1; rp {static {address 10.254.14.132;}}interface t1-1/0/0:0.0 {mode sparse-dense;version 2;}interface lo0.1 {mode sparse-dense;version 2;}}}}}

Router P0

[edit]protocols {... msdp { peer 10.254.71.48 {local-address 10.254.71.49;}}...pim {rp {local {address 10.254.71.49;}}interface all {mode sparse;version 2;}interface fxp0.0 {disable;}}}

Router P1

[edit]protocols {... msdp { peer 10.254.71.49 {local-address 10.254.71.48;}}...pim {rp {local {address 10.254.71.48;}}interface all {mode sparse;version 2;}interface fxp0.0 {disable;}}}

Router PE1

[edit]protocols {pim {rp {static {address 10.254.71.48;}}interface all {mode sparse;version 2;}interface fxp0.0 {disable;}}}routing-instances {VPN-A {provider-tunnel {pim-asm {group-address 239.1.1.1;}}protocols {pim {dense-groups {229.0.0.0/8;} vpn-group-address 239.1.1.1; rp {static {address 10.254.14.132;}}interface t1-1/0/0:0.0 {mode sparse-dense;version 2;}interface lo0.1 {mode sparse-dense;version 2;}}}}}

Router CE1

[edit]protocols {pim {dense-groups {229.0.0.0/8;}rp {local {address 10.254.14.132;}}interface all {mode sparse-dense;version 2;}interface fxp0.0 {disable;}}}

Verifying Your Work

The show commands used to verify proper functionality of multicast in an interprovider environment are the same ones used with the first Layer 3 VPN multicast example (see Example: Basic IPv4 Multicast over a Layer 3 VPN Configuration).

The following output provides details for RP and the PIM join information:

Router CE0 Status

user@CE0> show pim rps extensive 
Instance: PIM.master
Family: INET
RP: 10.254.14.132
Learned via: static configuration
Time Active: 00:21:35
Holdtime: 0
Device Index: 119
Subunit: 32769
Interface: pe-6/0/0.32769
Group Ranges:
        224.0.0.0/4
Active groups using RP:
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
Family: INET6
user@CE0> show pim join extensive 
Instance: PIM.master Family: INET
Group: 229.1.1.1
    Source: 192.168.295.38
    Flags: dense
    Upstream interface: fe-3/0/2.0
    Downstream interfaces:
        t1-7/0/0:0.0
Instance: PIM.master Family: INET6

Router PE0 Status

user@PE0> show pim rps extensive 
Instance: PIM.master
Family: INET
RP: 10.254.71.49
Learned via: static configuration
Time Active: 00:22:07
Holdtime: 0
Device Index: 34
Subunit: 32769
Interface: pe-1/1/0.32769
Group Ranges:
        224.0.0.0/4
Active groups using RP:
        239.1.1.1
        total 1 groups active
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
239.1.1.1       10.254.71.51    10.254.71.51    10.254.71.49    Suppress      20
Family: INET6
user@PE0> show pim rps extensive instance VPN-A 
Instance: PIM.VPN-A
Family: INET
RP: 10.254.14.132
Learned via: static configuration
Time Active: 00:22:22
Holdtime: 0
Device Index: 34
Subunit: 32771
Interface: pe-1/1/0.32771
Group Ranges:
        224.0.0.0/4
Active groups using RP:
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
Family: INET6
user@PE0> show pim join extensive 
Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.49
    Flags: sparse,rptree,wildcard
    Upstream interface: so-0/0/0.0
    Upstream State: Join to RP
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: SRW  Timeout: Infinity
Group: 239.1.1.1
    Source: 10.254.71.47
    Flags: sparse,spt-pending
    Upstream interface: so-0/0/0.0
    Upstream State: Join to Source
    Keepalive timeout: 198
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: S    Timeout: Infinity
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse
    Upstream interface: local
    Upstream State: Local Source, Prune to RP
    Keepalive timeout: 198
    Downstream Neighbors:
        Interface: so-0/0/0.0
            192.168.296.42 State: Join   Flags: S    Timeout: 176
Instance: PIM.master Family: INET6
user@PE0> show pim join extensive instance VPN-A 
Instance: PIM.VPN-A Family: INET
Group: 229.1.1.1
    Source: 192.168.295.38
    Flags: dense
    Upstream interface: t1-1/0/0:0.0
    Downstream interfaces:
        mt-1/1/0.32769
Instance: PIM.VPN-A Family: INET6

Router P0 Status

user@P0> show pim rps extensive 
Instance: PIM.master
Family: INET
RP: 10.254.71.49
Learned via: static configuration
Time Active: 00:30:43
Holdtime: 0
Device Index: 33
Subunit: 32768
Interface: pd-1/1/0.32768
Group Ranges:
        224.0.0.0/4
Active groups using RP:
        239.1.1.1
        total 1 groups active
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
239.1.1.1       10.254.71.51    10.254.71.51    10.254.71.49    Receive        
Family: INET6
user@P0> show pim join extensive 
Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.49
    Flags: sparse,rptree,wildcard
    Upstream interface: local
    Upstream State: Local RP
    Downstream Neighbors:
        Interface: so-0/1/0.0
            192.168.296.41 State: Join   Flags: SRW  Timeout: 184
Group: 239.1.1.1
    Source: 10.254.71.47
    Flags: sparse,spt-pending
    Upstream interface: so-0/0/2.0
    Upstream State: Local RP, Join to Source
    Keepalive timeout: 207
    Downstream Neighbors:
        Interface: so-0/1/0.0
            192.168.296.41 State: Join   Flags: S    Timeout: 184
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse,spt
    Upstream interface: so-0/1/0.0
    Upstream State: Local RP, Join to Source
    Keepalive timeout: 207
    Downstream Neighbors:
        Interface: so-0/0/2.0
            192.168.296.73 State: Join   Flags: S    Timeout: 186
        Interface: so-0/1/0.0             (pruned)
            192.168.296.41 State: Prune  Flags: SR   Timeout: 184
Instance: PIM.master Family: INET6

Router P1 Status

user@P1> show pim rps extensive 
Instance: PIM.master
Family: INET
RP: 10.254.71.48
Learned via: static configuration
Time Active: 06:26:56
Holdtime: 0
Device Index: 32
Subunit: 32768
Interface: pd-1/1/0.32768
Group Ranges:
        224.0.0.0/4
Active groups using RP:
        239.1.1.1
        total 1 groups active
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
239.1.1.1       10.254.71.47    10.254.71.47    10.254.71.48    Receive        0
Family: INET6
user@P1> show pim join extensive 
Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.48
    Flags: sparse,rptree,wildcard
    Upstream interface: local
    Upstream State: Local RP
    Downstream Neighbors:
        Interface: so-0/0/1.0
            192.168.296.50 State: Join   Flags: SRW  Timeout: 174
Group: 239.1.1.1
    Source: 10.254.71.47
    Flags: sparse,spt
    Upstream interface: so-0/0/1.0
    Upstream State: Local RP, Join to Source
    Keepalive timeout: 196
    Downstream Neighbors:
        Interface: so-0/0/1.0             (pruned)
            192.168.296.50 State: Prune  Flags: SR   Timeout: 174
        Interface: so-0/0/2.0
            192.168.296.74 State: Join   Flags: S    Timeout: 178
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse,spt-pending
    Upstream interface: so-0/0/2.0
    Upstream State: Local RP, Join to Source
    Keepalive timeout: 196
    Downstream Neighbors:
        Interface: so-0/0/1.0
            192.168.296.50 State: Join   Flags: S    Timeout: 174
Instance: PIM.master Family: INET6

Router PE1 Status

user@PE1> show pim rps extensive 
Instance: PIM.master
Family: INET
RP: 10.254.71.48
Learned via: static configuration
Time Active: 00:25:13
Holdtime: 0
Device Index: 34
Subunit: 32770
Interface: pe-1/1/0.32770
Group Ranges:
        224.0.0.0/4
Active groups using RP:
        239.1.1.1
        total 1 groups active
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
239.1.1.1       10.254.71.47    10.254.71.47    10.254.71.48    Suppress      42
Family: INET6
user@PE1> show pim rps extensive instance VPN-A 
Instance: PIM.VPN-A
Family: INET
RP: 10.254.14.132
Learned via: static configuration
Time Active: 00:25:17
Holdtime: 0
Device Index: 34
Subunit: 32771
Interface: pe-1/1/0.32771
Group Ranges:
        224.0.0.0/4
Active groups using RP:
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
Family: INET6
user@PE1> show pim join extensive 
Instance: PIM.master Family: INET
Group: 239.1.1.1
    Source: *
    RP: 10.254.71.48
    Flags: sparse,rptree,wildcard
    Upstream interface: so-0/0/3.0
    Upstream State: Join to RP
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: SRW  Timeout: Infinity
Group: 239.1.1.1
    Source: 10.254.71.47
    Flags: sparse
    Upstream interface: local
    Upstream State: Local Source, Prune to RP
    Keepalive timeout: 173
    Downstream Neighbors:
        Interface: so-0/0/3.0
            192.168.296.49 State: Join   Flags: S    Timeout: 199
Group: 239.1.1.1
    Source: 10.254.71.51
    Flags: sparse,spt-pending
    Upstream interface: so-0/0/3.0
    Upstream State: Join to Source
    Keepalive timeout: 173
    Downstream Neighbors:
        Interface: mt-1/1/0.32769
            0.0.0.0 State: Join   Flags: S    Timeout: Infinity
Instance: PIM.master Family: INET6
user@PE1> show pim join extensive instance VPN-A 
Instance: PIM.VPN-A Family: INET
Group: 229.1.1.1
    Source: 192.168.295.38
    Flags: dense
    Upstream interface: mt-1/1/0.32769
    Downstream interfaces:
        t1-1/0/0:0.0
Instance: PIM.VPN-A Family: INET6

Router CE1 Status

user@CE1> show pim rps extensive 
Instance: PIM.master
Family: INET
RP: 10.254.14.132
Learned via: static configuration
Time Active: 00:28:22
Holdtime: 0
Device Index: 69
Subunit: 32768
Interface: pd-3/1/0.32768
Group Ranges:
        224.0.0.0/4
Active groups using RP:
Register State for RP:
Group           Source          FirstHop        RP Address      State    Timeout
Family: INET6
user@CE1> show pim join extensive 
Instance: PIM.master Family: INET
Group: 229.1.1.1
    Source: 192.168.295.38
    Flags: dense
    Upstream interface: t1-2/0/0:0.0
    Downstream interfaces:
        fe-2/2/0.0
Instance: PIM.master Family: INET6
 

Related Documentation

 

Published: 2012-11-15

Supported Platforms

 

Related Documentation

 

Published: 2012-11-15

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