Command Line Reference Guide

IPv4 Routing | 629
Defaults
IP 4-tuple (IP SA, IP DA, Source Port, Destination Port)
Command Modes
CONFIGURATION
Command
History
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
mac {dest-mac |
source-dest-mac |
source-mac}
Enter the keywords to distribute MAC traffic based on the following criteria:
• dest-mac—Uses the destination MAC address, VLAN, Ethertype, source
module ID and source port ID fields to hash. The hashing mechanism returns a
3-bit index indicating which port the packet should be forwarded to.
• source-dest-mac—Uses the destination and source MAC address, VLAN,
Ethertype, source module ID and source port ID fields to hash. The hashing
mechanism returns a 3-bit index indicating which port the packet should be
forwarded to.
• source-mac—Uses the source MAC address, VLAN, Ethertype, source module
ID and source port ID fields to hash. The hashing mechanism returns a 3-bit
index indicating which port the packet should be forwarded to.
tcp-udp enable
Enter the keywords to distribute traffic based on the following:
• enable—Takes the TCP/UDP source and destination ports into consideration
when doing hash computations. (By default, this is enabled)
Version 7.6.1.0 Added support for S-Series
Version 7.5.1.0 Introduced on C-Series
hash-algorithm ecmp
Change the algorithm used to distribute traffic flows across a Port Channel.
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.