Cisco Catalyst 4500 Series Configuration Manual page 355

Chapter 2
ip cef load-sharing algorithm
To configure the load-sharing hash function so that the source TCP/UDP port, the destination TCP/UDP
port, or both ports can be included in the hash in addition to the source and destination IP addresses, use
the ip cef load-sharing algorithm command. To revert back to the default, which does not include the
ports, use the no form of this command.
Syntax Description include-ports
source source
destination dest
original
tunnel
universal
Command Default Default load-sharing algorithm is disabled.
This option does not include the source or destination port in the load-balancing hash.
Note
Command Modes Global configuration mode
Command History Release
12.1(12c)EW
Usage Guidelines The original algorithm, tunnel algorithm, and universal algorithm are routed through the hardware. For
software-routed packets, the algorithms are handled by the software. The include-ports option does not
apply to the software-switched traffic.
Examples
The following example shows how to configure the IP CEF load-sharing algorithm that includes Layer
4 ports:
Switch(config)# ip cef load-sharing algorithm include-ports
Switch(config)#
ip cef load-sharing algorithm {include-ports {source source | destination dest} | original |
tunnel | universal}
no ip cef load-sharing algorithm {include-ports {source source | destination dest} | original |
tunnel | universal}
Specifies the algorithm that includes the Layer 4 ports.
Specifies the source port in the load-balancing hash functions.
Specifies the destination port in the load-balancing hash. Uses the source and
destination in hash functions.
Specifies the original algorithm; not recommended.
Specifies the algorithm for use in tunnel-only environments.
Specifies the default Cisco IOS load-sharing algorithm.
Modification
This command was introduced on the Catalyst 4500 series switch.
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
ip cef load-sharing algorithm
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