Statement introduced before Junos OS Release 7.4.
Configure layer information for the load-balancing specification. Only the IPv4 protocol is supported.
family inet—Incorporate port data into the hash key for flow determination. By default, port data is ignored when determining flows.
layer-3—Incorporate Layer 3 (IP) data into the hash key. You must include the layer-3 statement. If you omit the layer-3 statement, the management process removes the hash-key statement from the configuration and the router behaves as if you specified layer-3.
By default, or if you specify only the layer-3 statement, the router uses the following Layer 3 information in the packet header for per-flow load balancing:
Source IP address
Destination IP address
Incoming interface index
layer-4—Incorporate Layer 4 Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) data into the hash key.
If you include the layer-4 statement, the router uses the following Layer 4 information to load-balance:
Source port number
Destination port number
IP type of service
session-id—Include the session ID in the hash key.
symmetric-hash—Create the symmetric hash key with source and destination ports.
complement—Create the complement of the symmetric hash key.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.