Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

Last-hop routers

Updated: April 17, 2026

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Describes the router connected to the receiver that handles Shortest-Path Tree switchover functionality in PIM multicast networks.

A last-hop router is a network device that

is connected to the receiver
is responsible for doing a Shortest-Path Tree (SPT) switchover in case of PIM/PIM6 any-source multicast (ASM), and
is handled by border leaf switches in network implementations.

Border leaf switch functionality

The border leaf switches will handle this functionality. The non-border leaf switches do not participate in this function.

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