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Configuring flow classification
To implement differentiated services, flow classification categorizes packets to be forwarded by a
multicore device according to one of the following flow classification policies:
•
Flow-based
policy
—Forwards packets of a flow to the same CPU. A data flow is defined by
using the following fields: source IP address, destination IP address, source port number,
destination port number, and protocol number. This policy takes the first-in first-out rule.
•
Packet-based
policy
—Forwards packets in sequence to different CPUs, even though they are
the same flow. This policy does not ensure packet order.
Feature and hardware compatibility
Hardware Flow
classification compatibility
MSR954(JH296A/JH297A/JH298A/JH299A) No
MSR1002-4/1003-8S No
MSR2003 No
MSR2004-24/2004-48 No
MSR3012/3024/3044/3064 Yes
MSR4060/4080 Yes
Specifying a flow classification policy
IMPORTANT:
If a service requires packets of a flow to be received by the same CPU, you must use the flow-based
policy.
To specify a flow classification policy:
Step Command Remarks
1.
Enter system view.
system-view
N/A
2.
Specify a flow
classification policy.
forwarding policy { per-flow |
per-packet }
By default, flow-based policy is used.
