Cisco Nexus 5000 Series - Page 35

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2-11
Cisco Nexus 5000 Series NX-OS Interfaces Operations Guide, Release 5.0(3)N2(1)
Chapter 2 Cisco Nexus 5500 Platform Layer 3 and vPC Operations
Faster Convergence with the Prebuilt Source Tree
Figure 2-9 vPC Switch as the Receiver Designated Router
This example shows the output of the multicast routing table and VLAN 10 appears in the OIF list of
(S,G) entry on N5k-2. N5k-1 joins the source tree but its OIF list remains empty.
N5k-1# show ip mroute 224.1.1.1
IP Multicast Routing Table for VRF "default"
(*, 224.1.1.1/32), uptime: 03:03:31, pim ip igmp
Incoming interface: Ethernet1/6, RPF nbr: 155.1.2.2
Outgoing interface list: (count: 1)
Vlan10, uptime: 03:01:16, igmp
(155.1.3.100/32, 224.1.1.1/32), uptime: 02:13:32, ip pim mrib
Incoming interface: Ethernet1/6, RPF nbr: 155.1.2.2
Outgoing interface list: (count: 0)
N5k-2# show ip mroute 224.1.1.1
IP Multicast Routing Table for VRF "default"
(*, 224.1.1.1/32), uptime: 01:48:07, igmp pim ip
Incoming interface: Ethernet1/6, RPF nbr: 155.1.2.6
Outgoing interface list: (count: 1)
Vlan10, uptime: 01:48:07, igmp
(155.1.3.100/32, 224.1.1.1/32), uptime: 01:00:24, ip pim mrib
Incoming interface: Ethernet1/6, RPF nbr: 155.1.2.6
Outgoing interface list: (count: 1)
Vlan10, uptime: 00:55:14, mrib
The multicast forwarding algorithm applies to all hosts that are connected to the Cisco Nexus 5500
Platform switch or the FEX in a VPC topology, including hosts directly connected to the switch or hosts
connected to straight-through FEX topology.
Receiver - VLAN 10
L3
L2
239438
IGMP report
N5k-1 N5k-2
Secondary Primary
Source
Mcast data
(*.G) join
(S,G) join
(*.G) join
(S,G) join
IGMP sync
RP