How to delete the rate limiting configuration on interfaces of an S series switch

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For S series fixed switches (except the S1700), you can run the undo qos lr inbound command in the interface view to delete the rate limiting configuration on the inbound interface.
This method can be used on S series fixed switches, such as the S1720GFR, S1720GW-E, S1720GWR-E, S2700, S3700, S5700, and S6700.

For S series modular switches, to delete the rate limiting configuration on the inbound interface, you can cancel the application of a CAR profile on the interface and then delete the profile.
For example, cancel the application of CAR profile qoscar1 on GE1/0/1, and then delete the profile.
[HUAWEI] interface gigabitethernet 1/0/1
[HUAWEI-GigabitEthernet1/0/1] undo qos car inbound
[HUAWEI-GigabitEthernet1/0/1] quit
[HUAWEI] undo qos car qoscar1
This method can be used on S series modular switches, such as the S7700, S9700, S12700, and S9300.

For S series switches (except the S1700), you can run the undo qos lr outbound command in the interface view to delete the rate limiting configuration on the outbound interface.
This method can be used on S series switches, such as the S1720GFR, S1720GW-E, S1720GWR-E, S2700, S3700, S5700, S6700, S7700, S9700, S12700, and S9300.

For S series switches (except the S1700), you can run the undo qos lr command in the management interface view to delete the rate limiting configuration on the management interface.
The management interface of fixed switches (such as the S5700 and S6700) is meth 0/0/1. The management interface of modular switches (such as the S7700, S9700, S12700 and S9300) is Ethernet 0/0/0.

Other related questions:
How to delete the rate limiting configuration from an interface
1. Log in to the web system, and choose QoS > Interface Rate Limit to access the parameter configuration page for interface-based rate limiting. On the Interface Rate Limit List toolbar, select the check box of the interface from which the rate limiting configuration is to be deleted, and click Delete. Click OK in the displayed dialog box. The rate limiting configuration is deleted from on the interface. 2. Using commands: You can also run the undo command to delete configurations from the interface to which a traffic policy is applied or the interface with rate limiting configured.

How to delete the rate limit configuration on an interface from a CE series switch
- Delete the rate limit configuration in the inbound direction of an interface. In the following example, QoS CAR profile qoscar1 is unbound from 10GE1/0/1 and the profile is deleted. <HUAWEI> system-view [~HUAWEI] interface 10ge 1/0/1 [~HUAWEI-10GE1/0/1] undo qos car inbound [*HUAWEI-10GE1/0/1] quit [*HUAWEI] undo qos car qoscar1 [*HUAWEI] commit - Delete the rate limit configuration in the outbound direction of an interface. You can run the undo qos lr [ outbound ] command in the interface view to delete the rate limit configuration on an interface.

ARP rate limiting on S series switch
An S series switch, except S1700, can limit the rate of ARP packets and ARP Miss messages. When the switch receives many ARP packets, configure ARP packet rate limiting to prevent CPU overloading. When the switch receives many IP packets of which the destination IP addresses cannot be resolved, the switch generates a large number of ARP Miss messages, delivers temporary ARP entries and sends may ARP request packets to the destination network. This increases CPU load and consumes bandwidth. To avoid IP packet attacks, configure ARP Miss rate limiting on the switch.

Rate limit for DHCP packets on specified interfaces of S series switch
For S series switches in V100R006 and later versions, only the S3728 in S3700 series switches supports the interface-based rate limit for DHCP packets.

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