Overview
Explains how to replicate routing information across different VPNs to facilitate communication between isolated network segments. Learn to simplify service sharing and migrations by enabling direct access between branches without requiring complex hub-bypass configurations.
Route leaking is a fundamental mechanism in Cisco Catalyst SD-WAN that facilitates the exchange of routing information between different Virtual Private Networks (VPNs) or Virtual Routing and Forwarding (VRF) instances. This feature enables service sharing, simplifies network migrations, and enhances routing flexibility by allowing routes to be replicated bidirectionally between the global VRF and service VPNs, or directly between service VPNs.
Feature history for route leaking between VPNs
Lists the development milestones and release information for route leaking between VPNs, including feature description.
Supported protocols
Provides details about the specific routing protocols compatible with bidirectional replication between global and service segments. Identifying supported protocols like BGP, OSPF, and EIGRP ensures that your network design correctly facilitates information exchange across logical boundaries.
Restrictions for route leaking and redistribution
Provides details about the limitations and usage constraints associated with replicating routes across different virtual private networks. Understanding these restrictions, such as NAT incompatibilities and route filtering limits, helps you avoid configuration errors and prevent potential routing loops.
Route leaking
Explains the mechanisms used to share common services across multiple segments through bidirectional route replication. Understanding how OMP administrative distances and inter-service leaking influence path selection allows you to maintain granular control over your network segmentation and connectivity.
Configure route leaking
Enables route replication between logical segments to support service sharing and network migration. This task guides you through configuring localized policies and attaching VPN templates to ensure that specific routes are correctly leaked and reachable across the overlay.
Verify route-leaking configurations between service VPNs using the CLI
Explains how to confirm that routes are being correctly leaked and redistributed between service VPNs. By using specific show commands, you can inspect the routing and Cisco Express Forwarding tables to ensure path symmetry and successful route replication.
Verify VRRP tracking
Provides details about verifying the operational status of VRRP groups and their associated track objects. These commands help you confirm that the system is actively monitoring leaked routes and responding correctly to changes in their reachability status.
Route redistribution
Explains how routing information learned from one protocol is shared with another to maintain connectivity across disparate domains. Mastering these concepts ensures that routes from various environments are correctly propagated throughout the global and service routing tables for optimal reachability.
Configure route redistribution between global VRF and service VPNs using the CLI
Shares routing data between transport and service segments by configuring BGP, OSPF, or EIGRP processes. This task details the steps for creating address families and applying route-maps to ensure seamless traffic flow across your network's logical boundaries.
Verify route redistribution
Explains how to confirm that routes are being successfully replicated and shared between different routing instances. This task involves using specific show commands to inspect the routing table and BGP attributes, ensuring that connectivity is established as intended.