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  1. Cisco APIC Layer 3 Networking Configuration Guide, Release 6.1 (x)

    Apr 4, 2025 · Multicast forwarding using head-end replication replicates the multicast packet as a separate unicast packet for every head-end replication tunnel. Layer 3 multicast in a remote …

  2. Solved: Multicasts in ACI - Cisco Community

    Mar 1, 2023 · Multicast is "unknown" when there are no IGMP snooping/MLD entries for the group (per leaf) because in BRKACI-2608 Multicasts in ACI, the exact same statement is used to …

  3. Designing with Cisco ACI | Tomislav Kranjec’s Blog

    Mar 30, 2025 · Head End Replication (HER): For Layer 2 broadcast, unknown unicast, and multicast (BUM) traffic, Head End Replication (HER) tunnels are used. This method avoids the …

  4. ACI Fundamentals: Underlay Infrastructure | SpringerLink

    Dec 27, 2022 · Although the multi-destination BUM traffic within each site is still delivered using multicasts, when a multicast packet needs to be sent to any remote site, spines perform so …

  5. Case Study: L3 Multicast in the ACI Fabric - Cisco

    Aug 25, 2017 · In ACI release 2.0, supported multicast routing features include: PIM ASM, PIM SSM, Static RP, PIM Auto-RP, and PIM BSR. In this document, we describe a validated …

  6. MultiCast In ACI - mukeshchanderia.com

    Apr 23, 2025 · Headend Replication: Instead of relying on traditional multicast routing across sites, ACI uses headend replication, where the source spine switch replicates multicast …

  7. ACI Multi-Site Control Plane and Data Plane - Learn Duty

    Jun 27, 2022 · ACI Multi-Site Overlay Data Plane I – How L2 BUM traffic is handled in ACI Multisite: This type of traffic can be achieved in one of two ways: Native multicast replication …

  8. Ingress Replication or Underlay Multicast PIM for BUM traffic in ACI

    Mar 1, 2019 · Could someone confirm on the method used by ACI Fabric for BUM traffic Was going though the Book " Building Data Centers with VxLAN BGP EVPN" and understood that …

  9. Cisco Application Centric Infrastructure (ACI) Design Guide

    Jun 6, 2024 · Cisco Application Centric Infrastructure (Cisco ACI™) technology enables you to integrate virtual and physical workloads in a programmable, multihypervisor fabric to build a …

  10. aci multicast HER-ETEP head-end replication external tunnel …

    aci multicast HER-ETEP head-end replication external tunnel endpoint This common anycast address is shared by all the spine nodes in the same site and is used to perform head-end …

  11. Cisco ACI Remote Leaf Architecture White Paper

    Apr 22, 2025 · The ACI remote leaf solution does Head End Point Replication (HREP) for Broadcast, Unknown and Multicast (BUM) traffic when BD is configured in flood mode. In the …

  12. ACI Multi-Site Control Plane - DCLessons

    Overlay Multicast TEP (O-METP): This is Anycast address, shared between all spines in same pod, and is used to perform head end replication of BUM Traffic. Here in this underlay control …