Reference Guide

Interfaces | 419
Deleting or disabling a port channel
To delete a port channel, you must be in the CONFIGURATION mode and use the no interface portchannel
channel-number command.
When you disable a port channel (using the
shutdown command) all interfaces within the port channel are
operationally down also.
Load balancing through port channels
Dell Networking OS uses hash algorithms for distributing traffic evenly over channel members in a port
channel (LAG). The hash algorithm distributes traffic among 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 be distributed 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 balancing uses source and destination packet information to get the greatest
advantage of resources by distributing traffic over multiple paths when transferring 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-algorithm commands are available for modifying the distribution algorithms..
S5000 load-balancing
For LAG hashing, the source IP, destination IP, source TCP/UDP port, and destination TCP/UDP port are
used for hash computation by default. For packets without a Layer 3 header, Dell Networking OS
automatically uses
load-balance mac source-dest-mac.
IP hashing or MAC hashing should not be configured at the same time. If you configure an IP and MAC
hashing scheme at the same time, the MAC hashing scheme takes precedence over the IP hashing scheme.
Note: Hash-based load-balancing on MPLS does not work when packet-based hashing (load-balance
ip-selection packet-based
) is enabled.