Reference Guide
534 | Multicast Source Discovery Protocol (MSDP)
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Figure 24-18. MSDP with Anycast RP
To configure Anycast RP:
Step Task Command Syntax Command Mode
1 In each routing domain that will have multiple RPs serving a
group, create a loopback interface on each RP serving the
group with the same IP address.
interface loopback CONFIGURATION
2 Make this address the RP for the group. ip pim rp-address CONFIGURATION
3 In each routing domain that will have multiple RPs serving a
group, create another loopback interface on each RP serving
the group with a unique IP address.
interface loopback CONFIGURATION
4 Peer each RP with every other RP using MSDP, specifying the
unique loopback address as the connect-source.
ip msdp peer CONFIGURATION
5 Advertise the network of each of the unique loopback
addresses throughout the network.
network ROUTER OSPF
AS X
AS Y
RP1
RP3
R1
R2
R3
R4
1/1
1/21
2/11
3/21
3/41
4/31
4/1
1/2
PC 1
Receiver
PC 3
Receiver
2/1
PC 2
Source
RP2
O
S
P
F
Area 0
O
S
P
F
Area 0
+
P
I
M
+
I
G
M
P
+
P
I
M
+
I
G
M
P
M
S
D
P
P
e
e
r
s
h
i
p
B
G
P
(*, 239.0.0.1), uptime 00:00:09, expires 00:00:00, RP 192.168.0.1, flags: SCJ
Incoming interface: Null, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 1/1 Forward/Sparse 00:00:09/Never
(10.11.4.2, 239.0.0.1), uptime 00:00:05, expires 00:03:25, flags: CTM
Incoming interface: GigabitEthernet 1/21, RPF neighbor 10.11.1.21
Outgoing interface list:
GigabitEthernet 1/1 Forward/Sparse 00:00:09/Never
(10.11.4.2, 239.0.0.1), uptime 00:00:52, expires 00:03:20, flags: FTA
Incoming interface: GigabitEthernet 2/1, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 2/11 Forward/Sparse 00:00:50/00:02:40
GigabitEthernet 2/31 Forward/Sparse 00:00:50/00:02:40
(*, 239.0.0.1), uptime 00:00:14, expires 00:03:16, RP 192.168.0.3, flags: S
Incoming interface: Null, RPF neighbor 0.0.0.0
Outgoing interface list:
GigabitEthernet 3/41 Forward/Sparse 00:00:14/00:03:16
(10.11.4.2, 239.0.0.1), uptime 00:00:14, expires 00:03:17, flags: TM
Incoming interface: GigabitEthernet 3/21, RPF neighbor 10.11.0.23
Outgoing interface list:
GigabitEthernet 3/41 Forward/Sparse 00:00:14/00:03:16
(*, 239.0.0.1), uptime 00:00:23, expires 00:00:00, RP 192.168.0.3, flags: SCJ
Incoming interface: GigabitEthernet 4/31, RPF neighbor 10.11.6.34
Outgoing interface list:
GigabitEthernet 4/1 Forward/Sparse 00:00:23/Never
(10.11.4.2, 239.0.0.1), uptime 00:00:23, expires 00:03:18, flags: CT
Incoming interface: GigabitEthernet 4/31, RPF neighbor 10.11.6.34
Outgoing interface list:
GigabitEthernet 4/1 Forward/Sparse 00:00:23/Never