Pim-Sparse Mode Support On Vlt - Dell S4820T Configuration Manual

This delay in bringing up the VLT ports also applies when the VLTi link recovers from a failure that caused
the VLT ports on the secondary VLT peer node to be disabled.

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 132. 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
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Virtual Link Trunking (VLT)