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Example: IPv4 Multicast with Interprovider VPNs Configuration

Figure 82: IPv4 Multicast with Interprovider VPNs Topology Diagram

Image g017131.gif

Interprovider VPNs are also mentioned in RFC 4364. An example is shown in Figure 82. 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 {
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 {
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;
}
}
}
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