R0106-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V7)

169

Configuring flow classification

To implement differentiated services, flow classification categorizes packets to be forwarded by a multi-core 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

The following matrix shows the feature and hardware compatibility:

Hardware Flow classification com

atibilit

MSR2000 No

MSR3000 Yes

MSR4000 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.