Reference Guide

IPv4 Routing | 655
Usage
Information
By default, FTOS distributes incoming traffic based on a hash algorithm using the following criteria:
• IP source address
• IP destination address
• TCP/UDP source port
• TCP/UDP destination port
Related
Commands
load-balance (E-Series)
e
By default, for E-Series chassis, FTOS uses an IP 5-tuple to distribute IP traffic over members of a Port
Channel as well as equal cost paths. To designate another method to balance traffic over Port Channel
members, use the load-balance command.
Syntax
load-balance [ip-selection 3-tuple | ip-selection packet-based] [mac]
To return to the default setting (IP 5-tuple), use one of the following commands:
• no load-balance ip-selection 3-tuple
• no load-balance ip-selection packet-based
• no load-balance mac
Parameters
Defaults
IP 5-tuple (IP SA, IP DA, IP Protocol Type, Source Port and Destination Port)
Command Modes
CONFIGURATION
Command
History
Usage
Information
By default, FTOS distributes incoming traffic based on a hash algorithm using the following criteria:
hash-algorithm ecmp
ip-selection 3-tuple Enter the keywords ip-selection 3-tuple to distribute IP traffic based
on the following criteria:
• IP source address
• IP destination address
• IP Protocol type
Note: For IPV6, only the first 32 bits (LSB) of IP SA and IP DA are
used for hash generation.
ip-selection packet-based Enter the keywords ip-selection packet-based to distribute IPV4
traffic based on the IP Identification field in the IPV4 header.
This option does not affect IPV6 traffic; that is, IPV6 traffic is not
distributed when this command is executed.
Note: Hash-based load-balancing on MPLS does not work when
packet-based hashing (
load-balance ip-selection
packet-based) is enabled.
mac Enter the keyword mac to distribute traffic based on the following:
• MAC source address, and
• MAC destination address.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 6.1.1.0 Introduced for E-Series