Huawei Quidway S3700 Series Configuration Manual page 159

Quidway S3700 Series Ethernet Switches
Configuration Guide - Security
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Issue 01 (2011-07-15)
By default, the alarm function is disabled when the rate of ARP packets exceeds the
maximum rate.
5. (Optional) Run:
arp anti-attack rate-limit alarm threshold threshold
The alarm threshold for the number of ARP packets discarded when the rate of ARP
packets exceeds the maximum rate is set.
By default, the alarm threshold for the number of ARP packets discarded is 100.
Configuring rate limit of ARP packets in the VLAN view
1. Run:
system-view
The system view is displayed.
2. Run:
vlan vlan-id
The VLAN view is displayed.
3. Run:
arp anti-attack rate-limit enable
Rate limit of ARP packets is enabled.
By default, rate limit of ARP packets is disabled.
4. Run:
arp anti-attack rate-limit packet-number [ interval-value ]
The rate limit duration and the maximum rate of ARP packets are set.
After the rate limit duration and the maximum rate of ARP packets are set, ARP
packets whose rate exceeds the maximum rate in the rate limit duration are discarded.
By default, the maximum rate of ARP packets is 100 and the rate limit duration of
ARP packets is 1s.
5. (Optional) Run:
arp anti-attack rate-limit alarm enable
The alarm function for the ARP packets discarded when the rate of ARP packets
exceeds the maximum rate is enabled.
By default, the alarm function is disabled when the rate of ARP packets exceeds the
maximum rate.
6. (Optional) Run:
arp anti-attack rate-limit alarm threshold threshold
The alarm threshold for the number of ARP packets discarded when the rate of ARP
packets exceeds the maximum rate is set.
By default, the alarm threshold for the number of ARP packets discarded is 100.
Configuring rate limit of ARP packets in the interface view
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
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4 ARP Security Configuration
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