Reference Guide

load-balance
By default, for C-Series and S-Series, FTOS uses an IP 4-tuple (IP SA, IP DA, Source Port, and Destination Port) 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.
S4820T
Syntax
load-balance {ip-selection [dest-ip | source-ip]} | {mac [dest-
mac | source-dest-mac | source-mac]} | {tcp-udp | ingress-port
[enable]}
To return to the default setting (IP 4-tuple), use the no load-balance {ip-selection
[dest-ip | source-ip]} | {mac [dest-mac | source-dest-mac |
source-mac]} | {tcp-udp | ingress-port [enable]}command.
Parameters
ip-selection
{dest-ip | source-
ip}
Enter the keywords to distribute IP traffic based on the following
criteria:
• dest-ip — Uses destination IP address and destination
port fields to hash. The hashing mechanism returns a 3-bit
index indicating which port the packet should be forwarded.
• source-ip — Uses source IP address and source port
fields to hash. The hashing mechanism returns a 3-bit index
indicating which port the packet should be forwarded.
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.
• 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.
• 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.
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. This
option is enabled by default.
ingress-port
enable
Enter the keywords to distribute traffic based on the following:
• enable — Takes the source port into consideration when
doing hash computations. This option is disabled by default.
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