Multipath support is disabled for all route tables. If the stack is using policy-based routing, multipath support can be enabled for a policy-based route table using the RouteTable statement in the policy configuration. See the policy-based routing (Routing) policy statements information in z/OS Communications Server: IP Configuration Reference for information about the RouteTable policy statement.

If there are multiple equal-cost paths to a destination, then TCP/IP uses the first path found for all IP packets to that destination.