Brocade MLX Series and NetIron Family (Supporting Multi-Service IronWare R05.6.xx) - Manual (Page 32)

24 Brocade MLX Series and NetIron Family Documentation Updates
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IPv6 packets on Openflow L23 port
1
IPv6 packets on Openflow L23 port
Before 5.6.00c
When a port is configured in Openflow L23 mode (or L23 hybrid mode), IPv6 traffic coming in to
that port was processed for traditional IPv6 forwarding (or dropped if the IPv6 routing table does
not contain a matching entry).
This behavior was the same for IPv6 traffic even if Openflow flow existed with matching L2 fields.
Non-IPv6 traffic was forwarding as per Openflow flow based on L2 match.
From 5.6.00c
If Openflow flow exists with matching L2 fields on an Openflow L23 (hybrid) port, all traffic
(including IPv6) matching the L2 fields will be forwarded as per flow.
System-max configuration for Openflow
A new condition has been introduced while configuring system-max for Openflow. The system-max
np-openflow-flow-entries layer2or3 command should be greater than or equal to the system-max
np-openflow-flow-entries layer23ipv4 command.
Hardware entries usage
If Openflow flow exists with matching L2 fields on an Openflow L23 (hybrid) port, it will consume
hardware entries from the system-max np-openflow-flow-entries layer2or3 command along with the
system-max np-openflow-flow-entries layer23ipv4 command.
Example:
For a specific module, consider that system-max np-openflow-flow-entries layer2or3 is configured
as 30,000 and system-max np-openflow-flow-entries layer23ipv4 is configured as 20,000. If there
are 10,000 L2 matching flows on L23 interface, then the maximum number of L2 flows possible
will be (30,000 - 10,000 = ) 20,000 and the maximum number of L23 flows will be (20,000 -
10,000 = ) 10,000.