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L3VPN Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

How does BGP-EVPN keep ARP/ND and multicast state aligned across PEs?
Why must VRFs be configured only on subinterfaces in this deployment?
What happens after a PE failure to redirect traffic to the new primary?

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L3VPN Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

How does BGP-EVPN keep ARP/ND and multicast state aligned across PEs?
Why must VRFs be configured only on subinterfaces in this deployment?
What happens after a PE failure to redirect traffic to the new primary?

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About this content

YANG Data Models for L3VPN Features

Using YANG Data Models

MPLS L3VPN Fundamentals and Core Deployment

MPLS Layer 3 VPN services
Configure the core network
Verify MPLS L3VPN configuration
L3VPN over RSVP-TE
VRF-lite
MPLS L3VPN services using Segment Routing

Inter-AS L3VPN Fundamentals and Route Reflector Exchange

Inter-AS L3VPN
Configure VPN connectivity with ASBRs exchanging IPv4 routes and MPLS labels
Configure Inter-AS VPN connectivity by defining a static route to an ASBR peer

Inter-AS Option B for L3VPN

Inter-AS Option B for L3VPN
Configure Inter-AS Option B for L3VPN

Carrier Supporting Carrier for L3VPN

Carrier Supporting Carrier for L3VPN
Benefits of Carrier Supporting Carrier for backbone and customer carriers
Configure Carrier Supporting Carrier for L3VPN on CSC-PE

Layer-3 Route Synchronization for EVPN Multihoming

Layer 3 route synchronization for EVPN multihoming
Configure Layer 3 route synchronization with port-active redundancy
Configure Layer 3 route synchronization for EVPN multihoming with all-active redundancy

VXLAN Static Routing

VXLAN static route services
VXLAN key concepts
Configure VXLAN static routing
Configure VXLAN static routing using the Service Layer API

IPv6 VPN Provider Edge Transport over MPLS

IPv6 VPN provider edge transport services

Layer-3 Route Synchronization for EVPN Multihoming

Updated: June 17, 2026

Outlines Layer-3 route synchronization concepts, operational requirements, benefits, and configuration procedures for EVPN multihoming, enabling resilient and efficient routing in multi-home network environments.

Layer 3 route synchronization for EVPN multihoming

Introduces Layer 3 route synchronization for EVPN multihoming, highlighting its benefits, detailing VRF configuration requirements on subinterfaces, and explaining operational workflows for effective route synchronization.

Configure Layer 3 route synchronization with port-active redundancy

Provides instructions to configure Layer 3 route synchronization with port-active redundancy, enabling reliable failover and efficient routing in EVPN multihoming scenarios.

Configure Layer 3 route synchronization for EVPN multihoming with all-active redundancy

Details the process for configuring Layer 3 route synchronization with all-active redundancy, supporting load balancing and seamless routing across multiple active links in EVPN multihomed environments.

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