Interfaces | 437
On the E-Series, to change the 5-tuple default to 3-tuple, MAC, or packet-based, use the following
command in CONFIGURATION mode:
For details on the load-balance command, see the IP Routing chapter of the FTOS Command Reference.
To distribute IP traffic over an E-Series port channel member, FTOS uses the 5-tuple IP default. The
5-tuple and the 3-tuple hash use the following keys:
Figure 20-18 shows the configuration and show command for packet-based hashing on the E-Series.
Figure 20-18. Command example: load-balance ip-selection packet-based
The load-balance packet based command can co-exist with load balance mac command to achieve the
functionality shown in Table 20-7.
Command Syntax Command Mode Purpose
[
no] load-balance [ip-selection
{3-tuple | packet-based}] [mac]
CONFIGURATION To designate a method to balance traffic over a port
channel. By default, IP 5-tuple is used to distribute
traffic over members port channel.
ip-selection 3-tuple—Distribute IP traffic based on IP
source address, IP destination address, and IP protocol type.
ip-selection packet-based—Distribute IPV4 traffic
based on the IP Identification field in the IPV4 header.
mac—Distribute traffic based on the MAC source address,
and the MAC destination address.
See Table 20-7 for more information.
Table 20-6. 5-tuple and 3-tuple Keys
Keys 5-tuple 3-tuple
IP source address (lower 32 bits)
XX
IP destination address (lower 32 bits)
XX
Protocol type
XX
TCP/UDP source port
X
TCP/UDP destination port
X
Note: For IPV6, only the first 32 bits (LSB) of IP Source Address and IP Destination Address are used for
hash generation.
FTOS(conf)#load-balance ip-selection packet-based
FTOS#show running-config | grep load
load-balance ip-selection packet-based
FTOS#
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