Which feature builds transport redundancy by using the cross link between two redundant WAN Edge routers?
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https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise-networks/sd-wan/nb-06-cisco-sd-wan-ebook-cte-en.pdfThe feature that builds transport redundancy by using the cross link between two redundant WAN Edge routers in Cisco SD-WAN Solutions is OMP, which stands for Overlay Management Protocol.
OMP is the control plane protocol in Cisco SD-WAN that provides route exchange and discovery among WAN Edge routers. It also maintains the overlay network and its health status. OMP can dynamically route traffic over the available transport links based on network conditions and policies.
To achieve transport redundancy with OMP, two or more WAN Edge routers can be configured in a redundant topology, with one router serving as the primary and the other as the secondary. The cross link between the primary and secondary WAN Edge routers is used for redundancy purposes, and it provides a backup path in case of a link failure.
When a transport link fails, OMP detects the failure and triggers a failover to the backup link. OMP also takes care of the routing changes required to ensure that the traffic is rerouted over the backup link. Once the failed link is restored, OMP detects it and reverts the traffic back to the original path.
In summary, OMP provides transport redundancy by using the cross link between two redundant WAN Edge routers in Cisco SD-WAN Solutions. It automatically detects link failures and reroutes traffic over the available backup link, ensuring high network availability and reliability.