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Assessment Title
Rule Text
The Arista Multilayer Switch must bind a Protocol Independent Multicast (PIM) neighbor filter to interfaces that have PIM enabled.
Description
Discussion Text
Protocol Independent Multicast (PIM) is a routing protocol used to build multicast distribution trees for forwarding multicast traffic across the network infrastructure. Protocol Independent Multicast traffic must be limited to only known PIM neighbors by configuring and binding a PIM neighbor filter to those interfaces that have PIM enabled. If a PIM neighbor filter is not applied to those interfaces that have PIM enabled, unauthorized routers can join the PIM domain and discover and use the rendezvous points and also advertise their rendezvous points into the domain. This can result in a denial of service by traffic flooding or result in the unauthorized transfer of data.
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