Eth-Trunk Bandwidth Control

chenhui · Created Mar 23, 2020 01:55:15

Posted by ptomasi at 2020-03-22 05:14 Hi,@Fuzineli, I've tried to apply QoS directly on Eth-Trunk, but system didn't allow.It seems Interf ...

Yes, exactly.
To apply the traffic policy on the Eth-trunk, one more thing should be paid attenation to, which is direction of the traffic policy.
When the policy bound to outward direction, it is traffic shaping, while bound to inward direction, it is traffic policing.
Commonly, we apply the traffic policy on the inward direction, cause it takes lesser resource.

chenhui · Created Mar 22, 2020 01:42:00

Hi @ptomasi,
Yes, it's possible to do that.
To control the traffic or limit the bandwidth, you can use the traffic policy which is a application of MQC.
Kindly check https://support.huawei.com/hedex/hdx.do?docid=EDOC1100064949&id=dc_cfg_qos-example_0000&lang=en

Fuzineli · Created Mar 22, 2020 01:38:11

Do you tried use the command similar below?
System view
interface XGigabitEthernet0/0/XX
qos lr outbound cir 2097152 cbs 1048576
qos lr inbound cir 2097152 cbs 1048576

In this case I used to interface. Please, Could you try use this but on Eth-Trunk Interface? I'm not sure if it is possible.

Best Regards

chenhui · Created Mar 22, 2020 01:42:00

Hi @ptomasi,
Yes, it's possible to do that.
To control the traffic or limit the bandwidth, you can use the traffic policy which is a application of MQC.
Kindly check https://support.huawei.com/hedex/hdx.do?docid=EDOC1100064949&id=dc_cfg_qos-example_0000&lang=en

ptomasi · Created Mar 22, 2020 05:14:38

Hi,

@Fuzineli, I've tried to apply QoS directly on Eth-Trunk, but system didn't allow.

It seems Interface-based rate limiting can only be applied on physical interfaces.

[PE-Eth-Trunk3]qos ?

phb Per-hop-behavior

[PE-Eth-Trunk3]qos

This way, to control 15G traffic it would be needed to apply 7.5G limitation in each interface of Eth-Trunk.

One problem I see is that Eth-Trunk doesn't distribute traffic between interfaces exactly, what could be a problem when traffic isn't balanced (e.g. 8G + 7G or 9G + 6G, etc)

What lead us to Traffic Policy:

- - -

@chenhui, I think "Example for Configuring a Traffic Policy to Implement Rate Limiting" can be the solution:

[PE] acl 3000

[PE-acl-adv-3000] rule permit ip source 192.168.40.0 0.0.3.255 // CIDR of customer

[PE-acl-adv-3000] quit

[PE] traffic classifier c1 operator and

[PE-classifier-c1] if-match acl 3000

[PE-classifier-c1] quit

[PE] traffic behavior b1

[PE-behavior-b1] car cir 10240000 pir 15360000 //Set the CIR to 10 Gbit/s and PIR to 15 Gbit/s.

[PE-behavior-b1] statistic enable

[PE-behavior-b1] quit

[PE] traffic policy p1

[PE-trafficpolicy-p1] classifier c1 behavior b1

[PE-trafficpolicy-p1] quit

[PE] interface Eth-Trunk 3

[PE-Eth-Trunk3] traffic-policy p1 outbound

[PE-Eth-Trunk3] quit

chenhui · Created Mar 23, 2020 01:55:15

Posted by ptomasi at 2020-03-22 05:14 Hi,@Fuzineli, I've tried to apply QoS directly on Eth-Trunk, but system didn't allow.It seems Interf ...

Yes, exactly.
To apply the traffic policy on the Eth-trunk, one more thing should be paid attenation to, which is direction of the traffic policy.
When the policy bound to outward direction, it is traffic shaping, while bound to inward direction, it is traffic policing.
Commonly, we apply the traffic policy on the inward direction, cause it takes lesser resource.

Eth-Trunk Bandwidth Control

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