dynamic-load-balance
Syntax
dynamic-load-balance
Hierarchy Level
[edit firewall family firewall filter family name filter firewall filter name term term name then]
Description
Selectively enable or disable dynamic load balancing based on
rdma-opcode match or any match available in firewall
filters. Available for INET, INET6, and ethernet-switching firewall filter
families, the mode of selective dynamic load balancing depends on the global
dynamic load balancing setting, which could be per per
packet mode, flowlet mode, or
assigned-flow mode. Read Dynamic Load Balancing to learn
more about these modes. Take for example the following configuration. The
first configuration statement sets the global dynamic load balancing mode to
per packet. Only those packets with
rdma-opcode as 10 are matched, and dynamically load
balanced on a per packet mode. Non-matching packets are
load-balanced using static load balancing.
set forwarding-options enhanced-hash-key ecmp-dlb per-packet set firewall family inet filter f1 term t1 from rdma-opcode 10 set firewall family inet filter f1 term t1 then accept set firewall family inet filter f1 term default then dynamic-load-balance disable
The aforementioned configuration is a way to have dynamic load balancing
enabled globally and dynamic load balancing enabled using firewall filters.
There is also a way to disable dynamic load balancing globally, and yet
achieve selective dynamic load balancing. The following is the configuration
to achieve this. In the first line, the configuration statement configures
the mode of dynamic load balancing, which in this example is
per-packet. The second configuration statement
disables dynamic load balancing globally for all ether types. Packets with
rdma-opcode as 10 will undergo selective dynamic load
balancing while non-matching packets will not undergo dynamic load balancing
because dynamic load balancing is disabled globally.
set forwarding-options enhanced-hash-key ecmp-dlb per-packet set forwarding-options enhanced-hash-key ecmp-dlb ether-type none set firewall family inet filter f1 term t1 from rdma-opcode 10 set firewall family inet filter f1 term t1 then dynamic-load-balance enable set firewall family inet filter f1 term default then accept
Setting the global configuration statement is important - set
forwarding-options enhanced-hash-key ecmp-dlb
per-packet|flowlet|assigned-flow.
Otherwise even if selective dynamic load balancing is configured, it will
not be active; packets will be statically load balanced, because the global
configuration is absent.
Also configure the UDF profile to enable UDF and RDMA Opcode match -
set system packet-forwarding-options firewall profiles
inet | ethernet-switching
udf-profile udf-profile1 |
udf-profile2. Use show pfe
filter hw profile-info to view the supported pre-defined set
of match conditions associated with udf-profile1 and
udf-profile2.
Options
enable - Enable dynamic load balancing
disable- Disable dynamic load balancing
Required Privilege Level
firewall - To view this statement in the configuration
firewall-control - To add this statement to the configuration
Release Information
Statement released in Junos OS EVO 24.1R1