Configuration manual

Figure 135. 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
(DR) if they are incorrectly hashed. In addition to being first-hop or last -hop routers, the peer node can
also act as an intermediate router.
The VLT peer nodes can also act as normal PIM routers on Layer 3 ports and on VLANS that do not have
any VLT port members. In addition to being first-hop or last-hop routers, the peer node can also act as
an intermediate router.
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Virtual Link Trunking (VLT)