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High Availability for Virtual Routing

· 1 min read · Peer1IX Team

High Availability for Virtual Routing

A virtual router can be more resilient than a physical one — if the design uses redundancy at every layer. What to configure.

Resilience is a design choice

Moving routing into the network removes the single box in your data center, but resilience still depends on how connections are built.

Two of everything

Peer1ix Cloud Router runs as redundant instances in separate locations. Connect each cloud and site to both, with BGP sessions to each instance.

Fast failure detection

BGP timers alone can take tens of seconds to detect a failure. Bidirectional Forwarding Detection (BFD) detects link problems in well under a second, triggering failover quickly.

Path preference

Decide whether both instances carry traffic actively or one is preferred. Active-active spreads load; active-standby simplifies troubleshooting.

Maintenance without impact

Before planned work, routes can be gracefully withdrawn from one instance so traffic moves to the other first.

Prove it

Schedule failover tests: shut a session, measure the time to recovery, confirm applications are unaffected.

high availabilityredundancyBFDrouting