07-Layer 3—IP Services Configuration Guide

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09-Multi-CPU packet distribution configuration
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Configuring multi-CPU packet distribution

About multi-CPU packet distribution

On a multi-CPU device, packets can be distributed among CPUs based on one of the following policies:

·     Flow-based policy—Forwards packets of a flow to one CPU or multiple CPUs. The CPU processes flow packets by following the first-in first-out rule. A data flow can be identified by the five-tuple: Source IP address, destination IP address, source port number, destination port number, and protocol number.

·     Packet-based policy—Forwards packets in sequence to different CPUs, even though they are the same flow. This policy does not ensure packet order.

Restrictions: Hardware compatibility with multi-CPU packet distribution

Hardware

Multi-CPU packet distribution compatibility

MSR810, MSR810-W, MSR810-W-DB, MSR810-LM, MSR810-W-LM, MSR810-10-PoE, MSR810-LM-HK, MSR810-W-LM-HK, MSR810-LM-CNDE-SJK, MSR810-CNDE-SJK

No

MSR810-LMS, MSR810-LUS

No

MSR810-LMS-EA, MSR810-LME

No

MSR1004S-5G

No

MSR2600-6-X1, MSR2600-10-X1, MSR2600-15-X1

No

MSR 2630

No

MSR3600-28, MSR3600-51

No

MSR3600-28-SI, MSR3600-51-SI

No

MSR3600-28-X1, MSR3600-28-X1-DP, MSR3600-51-X1, MSR3600-51-X1-DP

No

MSR3610-I-DP, MSR3610-IE-DP, MSR3610-IE-ES, MSR3610-IE-EAD, MSR-EAD-AK770, MSR3610-I-IG, MSR3610-IE-IG

Yes

MSR3610-X1, MSR3610-X1-DP, MSR3610-X1-DC, MSR3610-X1-DP-DC, MSR3620-X1, MSR3640-X1

Yes

MSR 3610, MSR 3620, MSR 3620-DP, MSR 3640, MSR 3660

Yes

MSR3610-G, MSR3620-G

No

MSR3640-X1-HI

Yes

Hardware

Multi-CPU packet distribution compatibility

MSR810-W-WiNet, MSR810-LM-WiNet

No

MSR830-4LM-WiNet

No

MSR830-5BEI-WiNet, MSR830-6EI-WiNet, MSR830-10BEI-WiNet

No

MSR830-6BHI-WiNet, MSR830-10BHI-WiNet

No

MSR2600-6-WiNet, MSR2600-10-X1-WiNet

No

MSR2630-WiNet

No

MSR3600-28-WiNet

No

MSR3610-X1-WiNet

Yes

MSR3610-WiNet, MSR3620-10-WiNet, MSR3620-DP-WiNet, MSR3620-WiNet, MSR3660-WiNet

Yes

Hardware

Multi-CPU packet distribution compatibility

MSR2630-XS

No

MSR3600-28-XS

No

MSR3610-XS

Yes

MSR3620-XS

Yes

MSR3610-I-XS

Yes

MSR3610-IE-XS

Yes

MSR3620-X1-XS

Yes

MSR3640-XS

Yes

MSR3660-XS

Yes

Hardware

Multi-CPU packet distribution compatibility

MSR810-LM-GL

No

MSR810-W-LM-GL

No

MSR830-6EI-GL

No

MSR830-10EI-GL

No

MSR830-6HI-GL

No

MSR830-10HI-GL

No

MSR1004S-5G-GL

No

MSR2600-6-X1-GL

No

MSR3600-28-SI-GL

No

Restrictions and guidelines: Multi-CPU packet distribution configuration

If a service requires packets of a flow to be received by the same CPU, you must use the flow-based policy.

Specifying a packet distribution policy

1.     Enter system view.

system-view

2.     Specify a packet distribution policy.

forwarding policy { per-flow | per-packet }

By default, the flow-based policy is used.

 

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