family inet
Syntax family inet {
layer-3;
layer-4;
session-id;
symmetric-hash {
complement;
}
}
Hierarchy Level [edit forwarding-options hash-key]
Release Information Statement introduced before Junos OS Release 7.4.
Description Configure layer information for the load-balancing specification. Only the IPv4 protocol
is supported.
Options 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
• Protocol
• 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.
Copyright © 2017, Juniper Networks, Inc.1516
ACX Series Universal Access Router Configuration Guide
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