Ip Cef Load-Sharing Algorithm - Cisco Catalyst 4500 Series Command Reference Manual

Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches

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
Defaults Default load-sharing algorithm is disabled.
Note This option does not include the source or destination port in the load-balancing hash.
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
This 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)#
OL-25342 -01
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
Support for this command was introduced on the Catalyst 4500 series switch.
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0SG and IOS 15.1(1)SG)
ip cef load-sharing algorithm
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