Dell EMC SmartFabric OS10 User Guide Release 10.5.0

Load balancing

To increase bandwidth, traffic is balanced across member links. RTAG7 is a hash algorithm that load balances traffic within a trunk group in a controlled manner. RTAG7 balances traffic to more effectively use member links as traffic gets more diverse.

RTAG7 generates a hash that consists of two parts:

• The first part generates from packet headers to identify micro-flows in traffic. By default, all listed parameters are enabled for load balancing except the ingress port.

  OS10# show load-balance
  
  Load-Balancing Configuration For LAG and ECMP:
  ----------------------------------------------
  IPV4 Load Balancing         : Enabled
  IPV6 Load Balancing         : Enabled
  MAC Load Balancing          : Enabled
  TCP-UDP Load Balancing      : Enabled
  Ingress Port Load Balancing : Disabled
  IPV4 FIELDS   : source-ip destination-ip protocol vlan-id l4-destination-port l4-source-port
  IPV6 FIELDS   : source-ip destination-ip protocol vlan-id l4-destination-port l4-source-port
  MAC FIELDS    : source-mac destination-mac  ethertype  vlan-id
  TCP-UDP FIELDS: l4-destination-port  l4-source-port

• The second part generates from the static physical configuration such as the ingress and egress port numbers.

OS10(config)# load-balancing ingress-port enable
OS10(config)# do show load-balance
Load-Balancing Configuration For LAG and ECMP:
----------------------------------------------
IPV4 Load Balancing         : Enabled
IPV6 Load Balancing         : Enabled
MAC Load Balancing          : Enabled
TCP-UDP Load Balancing      : Enabled
Ingress Port Load Balancing : Enabled 
IPV4 FIELDS   : source-ip destination-ip protocol vlan-id l4-destination-port l4-source-port
IPV6 FIELDS   : source-ip destination-ip protocol vlan-id l4-destination-port l4-source-port
MAC FIELDS    : source-mac destination-mac ethertype vlan-id
TCP-UDP FIELDS: l4-destination-port  l4-source-port