Glossary · System coordination, integration and orchestration
Gateway redundancy
Also known as: redundant gateway, first-hop redundancy
German: Gateway-Redundanz
In networking and integration, gateway redundancy is the provision of two or more gateways for the same connection, such as a router, protocol converter or edge gateway, so that communication continues when one gateway fails, often using protocols such as VRRP for routers.
- System integration
In one sentence
Gateway redundancy provides two or more gateways for the same connection so communication continues if one of them fails.
Example
Two protocol gateways link the PROFIBUS segment of the old kiln with the plant network; if one fails, the second takes over the same virtual address.
How it applies
- Engineering: Gateways are often single points of failure between otherwise redundant systems. Redundant gateways need a switchover mechanism, synchronized configuration and, for protocol converters, consistent data mapping on both units.
- Security: Both gateways in a pair must be hardened and patched to the same level; an outdated backup gateway is a weak point in the Conduit.
- Documentation: Document which unit is normally active, how switchover is indicated and how to update configuration on both units. Test switchover after changes and record the results.
Gateway redundancy vs. network redundancy
Network redundancy protects cables and switches, for example with ring topologies. Gateway redundancy protects the devices that connect networks or convert protocols. A robust design considers both.