Limits the amount of ingress flooded traffic; minimizes network impact of broadcast loops.
| port_list | Specifies the port number. On a stand-alone switch, this value is just the port number, and on a SummitStack, this value is the slot and port number. |
| port_group | Port group name. |
| broadcast | Specifies all broadcast packets. |
| multicast | Specifies all flooded multicast packets (known IP multicast caches are still forwarded at line rate). |
| unknown-destmac | Specifies all packets with unknown MAC DAs. |
| no-limit | Specifies unlimited rate. |
| pps | Packets per second allowed; range is from 0 to 262,144. |
| burst-tolerance | Configure the tolerance level to handle a packet burst. |
| default | Burst tolerance that allows a packet burst at least equal to the configured flood rate. |
| low | Minimal burst tolerance; aggressively suppresses a packet burst. |
| medium | Moderate burst tolerance. |
| high | Higher burst tolerance; allows a larger packet burst. |
| out-actions | Out-of-profile action. |
| log | Generate log event if traffic exceeds configured rate. |
| trap | Generate SNMP trap if traffic exceeds configured rate. |
| disable-port | Disable the underlying port when traffic exceeds configured rate. |
No limit.
Use this command to limit the amount of ingress flooding traffic and to minimize the network impact of broadcast loops.
Note
When the multicast keyword is used, both known and unknown multicast traffic will be rate limited.To display results, use the show ports rate-limit flood command.
The following example rate limits broadcast packets on port 3 on a stand-alone switch to 500 pps:
configure ports 3 rate-limit flood broadcast 500
This command was available in ExtremeXOS 11.1.
The out-actions, log, trap, disable-port, and port_group options were added in ExtremeXOS 16.1.
The burst-tolerance option was added in version 33.7.1.
This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, and X695 series switches.