Users Guide

load balance
By default, for the S5000, Dell Networking OS 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.
S5000
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. (By default, this is enabled.)
ingress-port
enable
Enter the keywords to distribute traffic based on the following:
● enable — Takes the source port into consideration when doing hash
computations. (By default, this is disabled.)
Defaults IP 4-tuple (IP SA, IP DA, Source Port, Destination Port)
Command Modes CONFIGURATION
Command
History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
By default, Dell Networking OS 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
hash-algorithm ecmp – changes the hash algorithm across an ECMP.
IPv4 Routing 759