Using both ICMP rate-limiting and all-traffic rate-limiting on the same interface

ICMP and all-traffic rate-limiting can be configured on the same interface. All-traffic rate-limiting applies to all inbound or outbound traffic (including ICMP traffic), while ICMP rate-limiting applies only to inbound ICMP traffic.


If the all-traffic load on an interface meets or exceeds the currently configured all-traffic inbound rate-limit while the ICMP traffic rate-limit on the same interface has not been reached, all excess traffic is dropped, including any inbound ICMP traffic above the all-traffic limit (regardless of whether the ICMP rate-limit has been reached).



  • The all-traffic inbound rate-limit on port "X" is configured at 55% of the port's bandwidth.

  • The ICMP traffic rate-limit on port "X" is configured at 2% of the port's bandwidth.

If at a given moment:

  • Inbound ICMP traffic on port "X" is using 1% of the port's bandwidth, and

  • Inbound traffic of all types on port "X" demands 61% of the ports's bandwidth,

all inbound traffic above 55% of the port's bandwidth, including any additional ICMP traffic, is dropped as long as all inbound traffic combined on the port demands 55% or more of the port's bandwidth.