• Configure an IP address and mask on the interface.INTERFACE modeip address ip-address mask [secondary]• ip-address mask: enter an address in dotted-decimal format (A.B.C.D). The mask must be in slash format (/24).• secondary: the IP address is the interface’s backup IP address. You can configure up to eight secondary IP addresses.Deleting or Disabling a Port ChannelTo delete or disable a port channel, use the following commands.• Delete a port channel.CONFIGURATION modeno interface portchannel channel-number• Disable a port channel.shutdownWhen you disable a port channel, all interfaces within the port channel are operationally down also.Load Balancing Through Port ChannelsDell Networking OS uses hash algorithms for distributing traffic evenly over channel members in a port channel (LAG).The hash algorithm distributes traffic among Equal Cost Multi-path (ECMP) paths and LAG members. The distribution is based on a flow,except for packet-based hashing. A flow is identified by the hash and is assigned to one link. In packet-based hashing, a single flow can bedistributed on the LAG and uses one link.Packet based hashing is used to load balance traffic across a port-channel based on the IP Identifier field within the packet. Load balancinguses source and destination packet information to get the greatest advantage of resources by distributing traffic over multiple paths whentransferring data to a destination.Dell Networking OS allows you to modify the hashing algorithms used for flows and for fragments. The load-balance and hash-algorithmcommands are available for modifying the distribution algorithms.Changing the Hash AlgorithmThe load-balance command selects the hash criteria applied to port channels.If you do not obtain even distribution with the load-balance command, you can use the hash-algorithm command to select thehash scheme for LAG, ECMP and NH-ECMP. You can rotate or shift the 12–bit Lag Hash until the desired hash is achieved.To change to another algorithm, use the second command.• Change the default (0) to another algorithm and apply it to ECMP, LAG hashing, or a particular line card.CONFIGURATION modehash-algorithm {ecmp {crc16 | crc16cc | crc32MSB | crc32LSB | crc-upper | dest-ip | flow-based-hashing {crc16|crc16cc|crc32MSB|crc32LSB|xor1|xor2|xor4|xor8|xor16}|lsb | xor1 | xor2 |xor4 | xor8 | xor16}[[hg {crc16 | crc16cc | crc32MSB | crc32LSB | xor1 | xor2 | xor4 | xor8 |xor16}]| [lag {crc16 | crc16cc | crc32MSB | crc32LSB | xor1 | xor2 | xor4 | xor8 | xor16 }][stack-unit|linecard number | port-set number | [hg—seed seed-value | seedseed-value410 Interfaces
