configure ports rate-limit flood

configure ports [port_list | port_group]rate-limit flood [broadcast | multicast | unknown-destmac] [no-limit | pps {out-actions [{log} {trap} {disable-port}]}]]

Description

Limits the amount of ingress flooded traffic; minimizes network impact of broadcast loops.

Syntax Description

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.
out-actions	Out-of-profile action.
log	Generate log event if traffic exceeds configured rate.
trap	Generate SNMP (Simple Network Management Protocol) trap if traffic exceeds configured rate.
disable-port	Disable the underlying port when traffic exceeds configured rate.

Default

No limit.

Usage Guidelines

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.

Example

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

History

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.