arp-guard rate-limit

Use this command to configure the rate limit for ARP packet processing at a given rate measured in packets-per-second. The ARP packets rate limit can be configured independently on a per-port basis and on a per-host basis (hosts identified based on source IP address, VLAN ID, and port and hosts identified based on the link-layer source MAC address, VLAN ID, and port).

Default Although the range is the same for all ARP rate limiting types, the default values vary and are as follows:
  • Per-port rate limit: Default 15.
  • Per-host (SMAC) rate limit: Default 10.
  • Per-host (SIP) rate limit: Default 10.
Format arp-guard rate-limit { per-src-ip | per-src-mac | per-port } pps
Mode Global Config
Parameter Description
per-src-ip Limits the rate of each source IP address.
per-src-mac Limits the rate of each source MAC address.
per-port Limits the rate of each port.
pps Indicates the rate limit in packets-per-second, ranging from 0 to 300. A value of zero (0) means no limit - the value is not tracked.

Example: The following example sets the rate-limit for hosts identified by source IP address.

(Switching)(Config)# arp-guard rate-limit per-src-ip 100

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