Cisco Cisco Nexus 5010 Switch Guida Alla Progettazione

 

 

Design Guide 

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Figure 18.    IGMP Snooping with vPC 

 

You can verify the vPC operations with IGMP by using this command: 

switch# show ip igmp snooping statistics vlan 10 

    ….. 

    CFS packets sent over VPC peer link: 13 

    CFS packets received over VPC peer link: 13 

    CFS packet errors: 0 

When multicast traffic reaches a vPC peer, this traffic is replicated to the ports that joined a given group as well as to 

the peer link. The usual duplicate prevention rule of vPC applies, and as Figure 19 shows, the traffic goes from S1 to 

S2 over the peer link (M1 to M2), but Link 4 (L4) does not forward this traffic because L4 is a vPC member port. 

Figure 19.    Multicast Traffic Forwarding with vPC