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Cisco Catalyst SD-WAN Routing Configuration Guide, Releases 26.x and Later

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Cisco Configuration Guide, Release 4.2

Table of contents

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About this document

Read Me First

Overlay Management Protocol

Feature history for OMP
OMP routing mechanisms for Cisco SD‑WAN overlay networks
OMP route advertisements
OMP paths
OMP route redistribution
OMP graceful restart
OMP vRoute advertisement optimization using system path
OMP vDiagnostics
Configure OMP

Border Gateway Protocol

Feature history for BGP
BGP for Cisco SD-WAN overlay networks
Configure BGP
Verify BGP redistribute route in OMP
Redistribute BGP routes and AS path information

Open Shortest Path First Routing Protocol

Feature history for OSPF routing protocol
OSPF and OSPFv3 protocol
Configure OSPF
Configure OSPFv3 IPSec authentication

Enhanced Interior Gateway Routing Protocol

EIGRP in Cisco IOS XE Catalyst SD-WAN devices
Configure EIGRP
Verification commands for EIGRP configuration

Routing Information Protocol

Feature history for RIP
RIP in Cisco Catalyst SD-WAN
Configure RIPv2 using the CLI
Verification commands for RIPv2 configuration
Configure RIPng using the CLI
Verification commands for RIPng configuration

Multicast Overlay Routing

Feature history for multicast overlay
Multicast overlay routing for Cisco IOS XE Catalyst SD-WAN
Configure multicast overlay routing
How traffic flows in multicast overlay routing
Verify multicast routing on hub-and-spoke

Radio Aware Routing

Feature history for RAR
RAR for Cisco IOS XE Catalyst SD-WAN devices
Configure RAR

Route Leaking between VPNs

Feature history for route leaking between VPNs
Supported protocols
Restrictions for route leaking and redistribution
Route leaking
Configure route leaking
Verify route-leaking configurations between service VPNs using the CLI
Verify VRRP tracking
Route redistribution
Configure route redistribution between global VRF and service VPNs using the CLI
Verify route redistribution

Bi-directional Forwarding Detection Protocol

Feature history for BFD protocol
BFD protocol for Cisco SD-WAN
Static route support for BFD sessions in transport VPN
Configure BFD using a configuration group
Configure BFD for routing protocols
Automatically suspending BFD sessions
Monitor and verify BFD configuration
Troubleshoot common BFD errors

Cisco SD-WAN Controller Route Filtering by TLOC Color

Feature history for route filtering by TLOC color
Route filtering mechanism by TLOC color
Configure Cisco SD-WAN Controller route filtering by TLOC color using a CLI template
Monitor Cisco SD-WAN Controller route filtering by TLOC color

Rendezvous Point Selection Process by a PIM BSR

Feature history for RP selection process by a PIM BSR
RP selection process by a PIM BSR
Configure a PIM BSR
Verify VRRP-Aware PIM Using the CLI

Multicast Source Discovery Protocol

Feature history for MSDP
MSDP Routing Protocol Support
Configure MSDP to interconnect Cisco SD-WAN and Non-SD-WAN using a CLI Template
Verify MSDP configuration to interconnect Cisco SD-WAN and Non-SD-WAN
Monitor MSDP configuration to interconnect Cisco SD-WAN and Non-SD-WAN
Troubleshooting for MSDP

Transport Gateway

Feature history for transport gateway
Transport gateways for connecting networks in Cisco SD‑WAN
Configure a router as a transport gateway
Configure the transport gateway path preference
Configure the site type for a router
Verify the site type of a router using the CLI
Verify a transport gateway configuration using the CLI

Symmetric Routing

Feature history for symmetric routing
Symmetric routing mechanisms for Cisco SD-WAN
Translating OMP metrics for devices outside of the overlay network
Symmetric routing scenarios
Configure symmetric routing
Verify symmetric routing
Monitor RIB metric translation

Bi-directional Forwarding Detection Protocol

Updated: April 24, 2026

Overview

Explains how Bi-directional Forwarding Detection Protocol (BFD) provides rapid failure detection between forwarding engines to enable faster network reconvergence. You can learn how to configure, monitor, and troubleshoot BFD for both overlay tunnels and traditional routing protocols like BGP and OSPF.

Feature history for BFD protocol

Lists the development milestones and release information for BFD protocol, including feature description.

BFD protocol for Cisco SD-WAN

Explains how Bidirectional forwarding detection (BFD) enables rapid detection of link, device, and path failures in enterprise networks, helping ensure faster recovery and high availability for critical applications.

Static route support for BFD sessions in transport VPN

Describes how static route configuration impacts BFD session establishment and how correct next-hop resolution ensures reliable BFD operation in transport VPNs.

Configure BFD using a configuration group

Describes how to configure BFD using configuration groups.

Configure BFD for routing protocols

Explains how to enable BFD for routing protocols such as BGP, OSPF, OSPFv3, and EIGRP.

Automatically suspending BFD sessions

Describes how Cisco Catalyst SD-WAN automatically suspends unstable BFD sessions to prevent repeated flapping and reduce unnecessary traffic disruption.

Monitor and verify BFD configuration

Explains how to monitor BFD sessions and verify configuration status using operational commands to ensure expected behavior and stability.

Troubleshoot common BFD errors

Describes how to troubleshoot common BFD issues efficiently.

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