Protocol Rank


Rank is used by the routing system when there are routes from different protocols to the same destination.

For each route, the route from the protocol with lowest rank number is used.

The protocol rank is the value that the routing daemon uses to order routes from different protocols to the same destination.

It is an arbitrarily assigned value used to determine the order of routes to the same destination.

Each route has only one rank associated with it, even though rank can be set at many places in the configuration.

The route derives its rank from the most specific route match among all configurations.

The active route is the route installed into the kernel forwarding table by the routing daemon.

In the case where the same route is contributed by more than one protocol, the one with the lowest rank becomes the active route.

Rank cannot be used to control the selection of routes within a dynamic Interior Gateway Protocol (IGP). This is accomplished automatically by the protocol and is based on the protocol metric.

Instead, rank is used to select routes from the same Exterior Gateway Protocol (EGP) learned from different peers or autonomous systems.

Some protocols - BGP and aggregate - allow for routes with the same rank.

To choose the active route in these cases, a separate tie breaker is used. This tie breaker is called LocalPref for BGP and Weight for aggregates.

Default Protocol Ranks

A default rank is assigned to each protocol.

Important - In a ClusterClosed Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing., you must configure all the Cluster Members in the same way.

Configuring Protocol Rank in Gaia Portal

Configuring Protocol Rank in Gaia Clish