DELL S6000-ON User Manual

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PIM-Sparse Mode Support on VLT
The designated router functionality of the PIM Sparse-Mode multicast protocol is supported on VLT peer 
switches for multicast sources and receivers that are connected to VLT ports.
VLT peer switches can act as a last-hop router for IGMP receivers and as a first-hop router for multicast 
sources.
Figure 120. PIM-Sparse Mode Support on VLT
On each VLAN where the VLT peer nodes act as the first hop or last hop routers, one of the VLT peer 
nodes is elected as the PIM designated router. If you configured IGMP snooping along with PIM on the 
VLT VLANs, you must configure VLTi as the static multicast router port on both VLT peer switches. This 
ensures that for first hop routers, the packets from the source are redirected to the designated router 
Virtual Link Trunking (VLT)
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