KB.15.15

5 Port Traffic Controls

Rate-limiting

In earlier releases, all traffic rate-limiting applied to inbound traffic only, and was specified as a

percentage of total bandwidth. Beginning with software release K.12.xx or later, it is also possible

to configure outbound rate-limiting for all traffic on a port and specify bandwidth usage in terms

of kilobits per second (kbps.)

CAUTION: Rate-limiting is intended for use on edge ports in a network. It is not recommended

for use on links to other switches, routers, or servers within a network, or for use in the network

core. Doing so can interfere with applications the network requires to function properly.

Configuring rate-limiting

Syntax

[no] int <port-list> rate-limit all [ in | out ] percent 0-100 | kbps

0-10000000

Configures a traffic rate limit (on non-trunked ports) on the link. The no form of the command

disables rate-limiting on the specified ports.

The rate-limit all command controls the rate of traffic sent or received on a port by setting a limit

on the bandwidth available. It includes options for:

• Rate-limiting on either inbound or outbound traffic.

• Specifying the traffic rate as either a percentage of bandwidth, or in terms of bits per second.

(Default: Disabled.)

Specifies a traffic rate limit on inbound traffic passing

through that port, or on outbound traffic.

in or out

Specifies the rate limit as a percentage of total available

bandwidth, or in kilobits per second.

percent or kbps

Viewing the current rate-limit configuration

The show rate-limit all command displays the per-port rate-limit configuration in the

running-config file.

Syntax

show rate-limit all <port-list>

Without <port-list>, this command lists the rate-limit configuration for all ports on the switch.

With <port-list>, this command lists the rate-limit configuration for the specified ports. This command

operates the same way in any CLI context.

Example

If you want to view the rate-limiting configuration on the first six ports in the module in slot "A":

Rate-limiting 171