Chapter 21
| Data Center Bridging Commands
Openflow Commands
– 571 –
Figure 5: Openflow Process
Note:
The storm control function will be invalid if an Openflow flow rule is added
to the switch. Due to a chip-specific behavior, storm control is detected and limited
in the DA lookup stage. ACL flow is implemented by Filter Processor (FP) rules, of
which the FP rule is near the last stage of ingress pipeline, and is capable of
changing packet behavior.
ingress port -> VLAN logic -> L2 logic (SA learing, DA lookup ...) -> L3 logic -> ...
-> FP logic -> MMU -> egress port
For example, some packets will be marked as discard in DA lookup because of
storm control, but ACL flow in the FP stage will change these packets to forwarding
state. That means the final state for these packets will be forwarding.
The following commands are supported by Openflow. Openflow is enabled by
default when the switch is booted and set to Hybrid mode. (See “Selecting Legacy
or Hybrid Operation Mode” on page 57 and “Legacy and Hybrid Operating Mode
Feature Set Differences” on page 1073.)
Table 114: Openflow Commands
Command Function Mode
controller Configuration Commands
of-agent controller Sets the address for the OpenFlow controller GC
of-agent datapath-desc Configures the data path description GC
Openflow Clear and Show Commands
clear of-agent Clears all flow and group settings PE
show of-agent controller Displays controller address and port settings PE
To Next Page
Loading...
Need help?
General